[(OD-Wall Thickness)*Wall Thickness]*0.02466=kg/m (weight per meter)
Alloy Pipe Material: 20G (ST45.8-III), 12Cr1MoV, T12, 15CrMo (13CrMo44, STFA22, STPA22, P12), Cr5Mo, 35CrMo, Q345B (16Mn), 27SiMn, 20Cr, 40Cr, 12Cr2Mo, T91, STFA26, 12Cr2MoC, 10CrMo910, A335P22, T22, STFA24.
Alloy pipe implementation standards: GB5310-1995, GB17396-1998, DIN17175-79, GB6479-2000, GB9948-2006 and so on.
Low alloy pipe size and allowable deviation Deviation level Standardized outside diameter allowable deviation D1 ±1.5%, minimum ±0.75 mm D2 ±1.0%. Minimum ±0.50 mm D3 ±0.75%. Minimum ±0.30 mm D4 ±0.50%. Minimum ± 0.10 mm Alloy pipe classification:
Alloy pipe (Alloy pipe) is a kind of seamless steel pipe, its performance is much higher than the general seamless steel pipe, because this steel pipe contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance is other seamless steel pipe can not be compared to, so alloy pipe in the petroleum, chemical industry, electric power, boiler and other industries are more widely used. So the alloy pipe is more widely used in petroleum, chemical, electric power, boiler and other industries.
Palladium alloy tubes are used for the separation of hydrogen and impurities.
The principle of hydrogen purification by palladium tube is that, at 300-500℃, when the hydrogen to be purified is passed into the side of the palladium tube, the hydrogen is adsorbed on the wall of the palladium tube, due to the lack of two electrons in palladium's 4d electron layer, which can generate an unstable chemical bond with the hydrogen (palladium and hydrogen reaction is reversible), under the action of the palladium, the hydrogen is ionized into protons with radius of 1.5×1015m, and the palladium is ionized into protons with radius of 1.5×1015m, which is the same as that of the palladium tube. ×The lattice constant of palladium is 3.88×10-10m (at 20°C), so it can pass through the palladium tube. Under the action of palladium, the proton combines with the electron and re-forms into a hydrogen molecule, which escapes from the other side of the palladium tube. On the surface of the palladium tube, undissociated gases cannot pass through, so high purity hydrogen can be obtained using the palladium tube. Although palladium has unique permeability to hydrogen, pure palladium has poor mechanical properties, oxidizes easily at high temperatures, has a low recrystallization temperature, and is prone to deformation and embrittlement of the palladium tube, so pure palladium cannot be used as a permeable membrane. Add appropriate amount of IB and VIII elements in palladium, made of palladium alloy, can improve the mechanical properties of palladium 11.Automobile half shaft casing with seamless steel pipe (GB3088-82) is the manufacture of automobile half shaft casing and drive axle housing axle tube with high quality carbon structural steel and alloy structural steel hot-rolled seamless steel pipe palladium alloy, silver accounted for 20-30%, and the content of other components (such as gold, etc.) <content <content <content of other components (such as gold, etc.). ) content <5%.
Currently used palladium alloys, silver accounts for about 20-30%, the content of other components (such as gold, etc.) <5%. The rate of hydrogen permeation through palladium alloys is related to the temperature, the thickness of the membrane and the pressure difference (P) between raw and pure hydrogen on both sides of the permeation touch. Increasing the temperature, increasing P and decreasing the thickness of the membrane will increase the rate of hydrogen transmission. However, an increase in temperature will reduce the tensile strength of the permeation membrane. Therefore, palladium tubes are usually used at a temperature of about 450°C. Certain impurities can cause palladium poisoning, which can deteriorate permeability and even damage the membrane. Substances that can cause palladium poisoning include: mercury, arsenides, halides, oil vapors, sulfur- and ammonia-containing substances, and dust. Palladium alloys can be made into tubes (called palladium tubes) or diaphragms (called palladium membranes).
ABS alloy pipe and special cold melt is one of them is widely used in building water supply and central air conditioning especially in building water supply risers and central air conditioning pipe with the application of PC/ABS alloy can also be made of automotive exterior parts, such as automotive wheel covers, reflector housings, taillight covers, etc. PC/ABS has a good molding, and can be processed into large automotive parts such as automotive fenders.
Steel pipe, as an important part of steel products, due to its manufacturing process and the shape of the billet used is divided into seamless steel pipe (round billet) and welded steel pipe (plate, strip billet) two categories.
Palladium tube purification of hydrogen is the principle of the hydrogen to be purified at 300-500 ℃ into the palladium tube side of the hydrogen is adsorbed in the palladium tube wall due to the palladium of the 4d electron layer lacks two electrons it can be generated with the hydrogen of the unstable chemical bonding (palladium and hydrogen this reaction is reversible) in the palladium under the action of
Alloy tubes of the classification of the situation
(1) Seamless steel pipe
Because of its different manufacturing processes, it is divided into hot-rolled (extruded) seamless steel pipe and cold-drawn (rolled) seamless steel pipe. Cold-drawn (rolled) tube is also divided into two kinds of round and shaped tube.
a. Overview of the process
Hot rolling (extrusion seamless steel pipe): round billet heating and piercing three-roll tilting, continuous rolling or extrusion de-tubing sizing (or reduction) cooling billet straightening hydrostatic test (or flaw detection) marking into the warehouse.
Cold-drawn (rolled) seamless steel pipe: round round billet heating and piercing punching annealing pickling oiling (copper-plated) multiple cold-drawn (cold-rolled) billet heat treatment straightening hydrostatic test (flaw detection) marking into the warehouse.
b. Seamless steel pipe, because of its different uses and is divided into the following several varieties:
GB/T8162-1999 (seamless steel pipe for structure). Mainly used for general structure and mechanical structure. Its representative material (grade): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on.
GB/T8163-1999 (seamless steel pipe for transportation of fluids). Mainly used in engineering and large-scale equipment for the transportation of fluid pipelines. Representative material (grade) for 20, Q345, etc..
GB3087-1999 (low and medium pressure boiler seamless steel pipe). Mainly used for industrial boilers and living boilers to transport low and medium pressure fluid piping. The representative material is 10, 20 steel.
GB5310-1995 (high-pressure boiler seamless steel pipe). Mainly used in power stations and nuclear power plant boilers on the high temperature, high pressure transportation fluid container and pipeline. The representative materials are 20G, 12Cr1MoVG, 15CrMoG and so on.
GB5312-1999 (carbon steel and carbon manganese steel seamless steel pipe for ships). Mainly used for ship boilers and superheaters with I, II level pressure-resistant pipe and so on. Representative materials are 360, 410, 460 steel grade, etc..
GB1479-2000 (high-pressure fertilizer equipment with seamless steel pipe). Mainly used for fertilizer equipment to transport high temperature and high pressure fluid pipeline. The representative materials are 20, 16Mn, 12CrMo, 12Cr2Mo and so on.
GB9948-1988 (seamless steel pipe for petroleum cracking). Mainly used in petroleum refineries, boilers, heat exchangers and their pipelines for transporting fluids. Its representative materials are 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.
GB18248-2000 (seamless steel pipe for gas cylinder). Mainly used for making all kinds of gas and hydraulic cylinders. Its representative materials are 37Mn, 34Mn2V, 35CrMo and so on.
GB/T17396-1998 (hot rolled seamless steel pipe for hydraulic strut). Mainly used in the production of coal mine hydraulic support and cylinder, column, and other hydraulic cylinder, column. Its representative materials are 20, 45, 27SiMn and so on.
GB3093-1986 (high pressure seamless steel pipe for diesel engine). Mainly used for diesel engine injection system high-pressure oil pipe. Its steel pipe is generally cold-drawn pipe, and its representative material is 20A.
GB/T3639-1983 (cold-drawn or cold-rolled precision seamless steel pipe). Mainly used for mechanical structure, carbon pressure equipment, requiring high dimensional accuracy, good surface finish steel tube. Its representative material 20, 45 steel and so on.
GB/T3094-1986 (cold drawn seamless steel pipe shaped steel pipe). Mainly used in the production of various structural components and parts, its material for high-quality carbon structural steel and low alloy structural steel.
GB/T8713-1988 (Precision I.D. Seamless Steel Tubes for Hydraulic and Pneumatic Cylinders). Mainly used in the production of hydraulic and pneumatic cylinder barrel with precision internal diameter size of cold drawn or cold rolled seamless steel tube. Its representative material is 20, 45 steel and so on.
GB13296-1991 (stainless steel seamless steel pipe for boilers and heat exchangers). Mainly used in chemical enterprises, boilers, superheaters, heat exchangers, condensers, catalytic tubes and so on. Used for high temperature, high pressure, corrosion-resistant steel pipe. Its representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
GB/T14975-1994 (structural stainless steel seamless steel pipe). Mainly used for general structure (hotel, restaurant decoration) and chemical enterprise mechanical structure with atmospheric and acid corrosion resistance and have a certain strength of the steel pipe. Its representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
GB/T14976-1994 (stainless steel seamless steel pipe for fluid transportation). Mainly used for conveying corrosive media pipeline. The representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti and so on.
YB/T5035-1993 (seamless steel pipe for automobile half shaft casing). Mainly used in the production of automotive half shaft casing and drive axle housing axle tube with high quality carbon structural steel and alloy structural steel hot rolled seamless steel pipe. Its representative materials are 45, 45Mn2, 40Cr, 20CrNi3A and so on.
API SPEC5CT-1999 (casing and tubing specification), is the American Petroleum Institute (American Petreleum Instiute abbreviated as API) compiled and released in the world. Among them: casing: from the surface of the ground into the drilling well, as a well-wall liner pipe, its pipe is connected by the joint hoop. The main materials are J55, N80, P110 and other steel grades, as well as hydrogen sulfide corrosion-resistant C90, T95 and other steel grades. Its low steel grade (J55, N80) can be welded steel pipe. Oil pipe: the pipe inserted into the casing from the ground surface up to the oil layer, which is connected between the pipes through the joints or the whole. Its role is to pump the oil layer oil through the oil pipe to the ground. The main materials are J55, N80, P110, and hydrogen sulfide corrosion-resistant C90, T95 and other steel grades. Its low steel grade (J55, N80) can be welded steel pipe.
API SPEC 5L-2000 (pipeline pipe specification), is the American Petroleum Institute compiled and released in the world.
Line pipe:It is the oil, gas or water that shafts out of the ground and is transported to the oil and gas industry through line pipe. Line pipe includes seamless and welded pipe two kinds, its pipe end has a flat end, with threaded end and socket end; its connection for the end of the welding, hoop connection, socket connection and so on. The main materials of the pipe are B, X42, X56, X65, X70 and other steel grades.
Alloy pipe (Alloy pipe) is a kind of seamless steel pipe, its performance is much higher than the general seamless steel pipe, because this kind of steel pipe contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance is other seamless steel pipe can not be compared to, so the alloy pipe in the petroleum, chemical industry, electric power, boiler and other industries are more widely used.
Palladium alloy tube is used for the separation of hydrogen and impurities.
The principle of hydrogen purification by palladium tube is that, at 300-500℃, when the hydrogen to be purified is passed into the side of the palladium tube, the hydrogen is adsorbed on the wall of the palladium tube, due to the palladium's 4d electron layer lacks two electrons, which can generate an unstable chemical bond with the hydrogen (palladium and hydrogen this reaction is reversible), under the action of the palladium, the hydrogen is ionized into protons with a radius of 1.5 ×The lattice constant of palladium is 3.88×10-10m (at 20°C), so it can pass through the palladium tube. Under the action of palladium, the proton combines with the electron and re-forms into a hydrogen molecule, which escapes from the other side of the palladium tube. On the surface of the palladium tube, undissociated gases cannot pass through, so high purity hydrogen can be obtained using the palladium tube. Although palladium has unique permeability to hydrogen, pure palladium has poor mechanical properties, oxidizes easily at high temperatures, has a low recrystallization temperature, and is prone to deformation and embrittlement of the palladium tube, so pure palladium cannot be used as a permeable membrane. Add appropriate amount of IB and VIII elements in palladium, made of palladium alloy, can improve the mechanical properties of palladium 11.Automobile half shaft casing with seamless steel pipe (GB3088-82) is the manufacture of automobile half shaft casing and drive axle casing axle tube with high-quality carbon structural steel and alloy structural steel hot-rolled seamless steel pipe palladium alloy, silver accounted for 20-30%, and the content of other components (such as gold, etc.) <content <content <content of other components (such as gold, etc.). ) content <5%.
Currently used palladium alloys, silver accounts for about 20-30%, the content of other components (such as gold, etc.) <5%. The rate of hydrogen transmission through palladium alloys is related to the temperature, the thickness of the membrane and the pressure difference (P) between raw and pure hydrogen on both sides of the permeation touch. Increasing the temperature, increasing P and decreasing the thickness of the membrane will increase the rate of hydrogen transmission. However, an increase in temperature will reduce the tensile strength of the permeation membrane. Therefore, palladium tubes are usually used at a temperature of about 450°C. Certain impurities can cause palladium poisoning, which can deteriorate permeability and even damage the membrane. Substances that can cause palladium poisoning include: mercury, arsenides, halides, oil vapors, sulfur- and ammonia-containing substances, and dust. Palladium alloys can be made into tubes (called palladium tubes) or diaphragms (called palladium membranes).
ABS alloy pipe and special cold melt is one of them is widely used in building water supply and central air conditioning especially in building water supply risers and central air conditioning pipe with the application of PC/ABS alloy can also be made of automotive exterior parts, such as automotive wheel covers, reflector housings, taillight covers, etc. PC/ABS has a good molding properties, and can be processed into large automotive parts such as automotive fenders.
Steel pipe, as an important part of steel products, due to its manufacturing process and the shape of the billet used is divided into seamless steel pipe (round billet) and welded steel pipe (plate, strip billet) two categories.
Palladium tube purification of hydrogen is the principle of the hydrogen to be purified at 300-500 ℃ into the palladium tube side of the hydrogen is adsorbed in the palladium tube wall due to the palladium of the 4d electron layer lacks two electrons it can be generated with the hydrogen of the unstable chemical bonding (palladium and hydrogen this reaction is reversible) in the palladium under the action of
Alloy tubes of the classification of the situation
(1) Seamless steel pipe
Because of its different manufacturing processes, it is divided into hot-rolled (extruded) seamless steel pipe and cold-drawn (rolled) seamless steel pipe. Cold-drawn (rolled) tube is also divided into two kinds of round and shaped tube.
a. Overview of the process
Hot rolling (extrusion seamless steel pipe): round billet heating and piercing three-roll tilting, continuous rolling or extrusion de-tubing sizing (or reduction) cooling billet straightening hydrostatic test (or flaw detection) marking into the warehouse.
Cold-drawn (rolled) seamless steel pipe: round round billet heating and piercing punching annealing pickling oiling (copper-plated) multiple cold-drawn (cold-rolled) billet heat treatment straightening hydrostatic test (flaw detection) marking into the warehouse.
b. Seamless steel pipe, because of its different uses and is divided into the following several varieties:
GB/T8162-1999 (seamless steel pipe for structure). Mainly used for general structure and mechanical structure. Its representative material (grade): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on.
GB/T8163-1999 (seamless steel pipe for transportation of fluids). Mainly used in engineering and large-scale equipment for the transportation of fluid pipelines. Representative material (grade) for 20, Q345, etc..
GB3087-1999 (low and medium pressure boiler seamless steel pipe). Mainly used for industrial boilers and living boilers to transport low and medium pressure fluid piping. The representative material is 10, 20 steel.
GB5310-1995 (high-pressure boiler seamless steel pipe). Mainly used in power stations and nuclear power plant boilers on the high temperature, high pressure transportation fluid container and pipeline. The representative materials are 20G, 12Cr1MoVG, 15CrMoG and so on.
GB5312-1999 (carbon steel and carbon manganese steel seamless steel pipe for ships). Mainly used for ship boilers and superheaters with I, II level pressure-resistant pipe and so on. The representative materials are 360, 410, 460 steel grade.
GB1479-2000 (high-pressure fertilizer equipment with seamless steel pipe). Mainly used for fertilizer equipment to transport high temperature and high pressure fluid pipeline. The representative materials are 20, 16Mn, 12CrMo, 12Cr2Mo and so on.
GB9948-1988 (seamless steel pipe for petroleum cracking). Mainly used in petroleum refineries, boilers, heat exchangers and their pipelines for transporting fluids. Its representative materials are 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.
GB18248-2000 (seamless steel pipe for gas cylinder). Mainly used for making all kinds of gas and hydraulic cylinders. Its representative materials are 37Mn, 34Mn2V, 35CrMo and so on.
GB/T17396-1998 (hot rolled seamless steel pipe for hydraulic strut). Mainly used in the production of coal mine hydraulic support and cylinder, column, and other hydraulic cylinder, column. Its representative materials are 20, 45, 27SiMn and so on.
GB3093-1986 (high pressure seamless steel pipe for diesel engine). Mainly used for diesel engine injection system high-pressure oil pipe. Its steel pipe is generally cold-drawn pipe, and its representative material is 20A.
GB/T3639-1983 (cold-drawn or cold-rolled precision seamless steel pipe). Mainly used for mechanical structure, carbon pressure equipment, requiring high dimensional accuracy, good surface finish steel tube. Its representative material 20, 45 steel and so on.
GB/T3094-1986 (cold drawn seamless steel pipe shaped steel pipe). Mainly used in the production of various structural components and parts, its material for high-quality carbon structural steel and low alloy structural steel.
GB/T8713-1988 (Precision I.D. Seamless Steel Tubes for Hydraulic and Pneumatic Cylinders). Mainly used in the production of hydraulic and pneumatic cylinder barrel with precision internal diameter size of cold drawn or cold rolled seamless steel tube. Its representative material is 20, 45 steel and so on.
GB13296-1991 (stainless steel seamless steel pipe for boilers and heat exchangers). Mainly used in chemical enterprises, boilers, superheaters, heat exchangers, condensers, catalytic tubes and so on. Used for high temperature, high pressure, corrosion-resistant steel pipe. Its representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
GB/T14975-1994 (structural stainless steel seamless steel pipe). Mainly used for general structure (hotel, restaurant decoration) and chemical enterprise mechanical structure with atmospheric and acid corrosion resistance and have a certain strength of the steel pipe. Its representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
GB/T14976-1994 (stainless steel seamless steel pipe for fluid transportation). Mainly used for conveying corrosive media pipeline. The representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti and so on.
YB/T5035-1993 (seamless steel pipe for automobile half shaft casing). Mainly used in the production of automotive half shaft casing and drive axle shell axle tube with high quality carbon structural steel and alloy structural steel hot rolled seamless steel pipe. Its representative materials are 45, 45Mn2, 40Cr, 20CrNi3A and so on.
API SPEC5CT-1999 (casing and tubing specification), is the American Petroleum Institute (American Petreleum Instiute referred to as API) compiled and released in the world. Among them: casing: from the surface of the ground into the drilling well, as a well-wall liner pipe, its pipe is connected by the joint hoop. The main materials are J55, N80, P110 and other steel grades, as well as hydrogen sulfide corrosion-resistant C90, T95 and other steel grades. Its low steel grade (J55, N80) can be welded steel pipe. Oil pipe: the pipe inserted into the casing from the ground surface up to the oil layer, which is connected between the pipes through the joints or the whole. Its role is to pump the oil layer oil through the oil pipe to the ground. The main materials are J55, N80, P110, and hydrogen sulfide corrosion-resistant C90, T95 and other steel grades. Its low steel grade (J55, N80) can be welded steel pipe.
API SPEC 5L-2000 (pipeline pipe specification), is the American Petroleum Institute compiled and released in the world.
Line pipe:It is the oil, gas or water that shafts out of the ground and is transported to the oil and gas industry through line pipe. Line pipe includes seamless and welded pipe two kinds, its pipe end has a flat end, with threaded end and socket end; its connection for the end of the welding, hoop connection, socket connection and so on. The main materials of the pipe are B, X42, X56, X65, X70 and other steel grades.
Alloy pipe (Alloy pipe) is a kind of seamless steel pipe, its performance is much higher than the general seamless steel pipe, because this kind of steel pipe contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance is other seamless steel pipe can not be compared to, so the alloy pipe in the petroleum, chemical industry, electric power, boiler and other industries are more widely used.
Palladium alloy tube is used for the separation of hydrogen and impurities.
The principle of hydrogen purification by palladium tube is that, at 300-500℃, when the hydrogen to be purified is passed into the side of the palladium tube, the hydrogen is adsorbed on the wall of the palladium tube, due to the palladium's 4d electron layer lacks two electrons, which can generate an unstable chemical bond with the hydrogen (palladium and hydrogen this reaction is reversible), under the action of the palladium, the hydrogen is ionized into protons with a radius of 1.5 ×The lattice constant of palladium is 3.88×10-10m (at 20°C), so it can pass through the palladium tube. Under the action of palladium, the proton combines with the electron and re-forms into a hydrogen molecule, which escapes from the other side of the palladium tube. On the surface of the palladium tube, undissociated gases cannot pass through, so high purity hydrogen can be obtained using the palladium tube. Although palladium has unique permeability to hydrogen, pure palladium has poor mechanical properties, oxidizes easily at high temperatures, has a low recrystallization temperature, and is prone to deformation and embrittlement of the palladium tube, so pure palladium cannot be used as a permeable membrane. Add appropriate amount of IB and VIII elements in palladium, made of palladium alloy, can improve the mechanical properties of palladium 11.Automobile half shaft casing with seamless steel pipe (GB3088-82) is the manufacture of automobile half shaft casing and drive axle housing axle tube with high quality carbon structural steel and alloy structural steel hot-rolled seamless steel pipe palladium alloy, silver accounted for 20-30%, and the other components (such as gold, etc.) content<<<. ) content <5%.
Currently used palladium alloys, silver accounts for about 20-30%, the content of other components (such as gold, etc.) <5%. The rate of hydrogen permeation through palladium alloys is related to the temperature, the thickness of the membrane and the pressure difference (P) between raw and pure hydrogen on both sides of the permeation touch. Increasing the temperature, increasing P and decreasing the thickness of the membrane will increase the rate of hydrogen transmission. However, an increase in temperature will reduce the tensile strength of the permeation membrane. Therefore, palladium tubes are usually used at a temperature of about 450°C. Certain impurities can cause palladium poisoning, which can deteriorate permeability and even damage the membrane. Substances that can cause palladium poisoning include: mercury, arsenides, halides, oil vapors, sulfur- and ammonia-containing substances, and dust. Palladium alloys can be made into tubes (called palladium tubes) or diaphragms (called palladium membranes).
ABS alloy pipe and special cold melt is one of them is widely used in building water supply and central air conditioning especially in building water supply risers and central air conditioning pipe with the application of PC/ABS alloy can also be made of automotive exterior parts, such as automotive wheel covers, reflector housings, taillight covers, etc. PC/ABS has a good molding properties, and can be processed into large automotive parts such as automotive fenders.
Steel pipe, as an important part of steel products, due to its manufacturing process and the shape of the billet used is divided into seamless steel pipe (round billet) and welded steel pipe (plate, strip billet) two categories.
Palladium tube purification of hydrogen is the principle of the hydrogen to be purified at 300-500 ℃ into the palladium tube side of the hydrogen is adsorbed in the palladium tube wall due to the palladium of the 4d electron layer lacks two electrons it can be generated with the hydrogen of the unstable chemical bonding (palladium and hydrogen this reaction is reversible) in the palladium under the action of
Alloy tubes of the classification of the situation
(1) Seamless steel pipe
Because of its different manufacturing processes, it is divided into hot-rolled (extruded) seamless steel pipe and cold-drawn (rolled) seamless steel pipe. Cold-drawn (rolled) tube is also divided into two kinds of round and shaped tube.
a. Overview of the process
Hot rolling (extrusion seamless steel pipe): round billet heating and piercing three-roll tilting, continuous rolling or extrusion de-tubing sizing (or reduction) cooling billet straightening hydrostatic test (or flaw detection) marking into the warehouse.
Cold-drawn (rolled) seamless steel pipe: round round billet heating and piercing punching annealing pickling oiling (copper-plated) multiple cold-drawn (cold-rolled) billet heat treatment straightening hydrostatic test (flaw detection) marking into the warehouse.
b. Seamless steel pipe, because of its different uses and is divided into the following several varieties:
GB/T8162-1999 (seamless steel pipe for structure). Mainly used for general structure and mechanical structure. Its representative material (grade): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on.
GB/T8163-1999 (seamless steel pipe for transportation of fluids). Mainly used in engineering and large-scale equipment for the transportation of fluid pipelines. Representative material (grade) for 20, Q345, etc..
GB3087-1999 (low and medium pressure boiler seamless steel pipe). Mainly used for industrial boilers and living boilers to transport low and medium pressure fluid piping. The representative material is 10, 20 steel.
GB5310-1995 (high-pressure boiler seamless steel pipe). Mainly used in power stations and nuclear power plant boilers on the high temperature, high pressure transportation fluid container and pipeline. The representative materials are 20G, 12Cr1MoVG, 15CrMoG and so on.
GB5312-1999 (carbon steel and carbon manganese steel seamless steel pipe for ships). Mainly used for ship boilers and superheaters with I, II level pressure-resistant pipe and so on. The representative materials are 360, 410, 460 steel grade.
GB1479-2000 (high-pressure fertilizer equipment with seamless steel pipe). Mainly used for fertilizer equipment to transport high temperature and high pressure fluid pipeline. The representative materials are 20, 16Mn, 12CrMo, 12Cr2Mo and so on.
GB9948-1988 (seamless steel pipe for petroleum cracking). Mainly used in petroleum refineries, boilers, heat exchangers and their pipelines for transporting fluids. Its representative materials are 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.
GB18248-2000 (seamless steel pipe for gas cylinder). Mainly used for making all kinds of gas and hydraulic cylinders. Its representative materials are 37Mn, 34Mn2V, 35CrMo and so on.
GB/T17396-1998 (hot rolled seamless steel pipe for hydraulic strut). Mainly used in the production of coal mine hydraulic support and cylinder, column, and other hydraulic cylinder, column. Its representative materials are 20, 45, 27SiMn and so on.
GB3093-1986 (high pressure seamless steel pipe for diesel engine). Mainly used for diesel engine injection system high-pressure oil pipe. Its steel pipe is generally cold-drawn pipe, and its representative material is 20A.
GB/T3639-1983 (cold-drawn or cold-rolled precision seamless steel pipe). Mainly used for mechanical structure, carbon pressure equipment, requiring high dimensional accuracy, good surface finish steel tube. Its representative material 20, 45 steel and so on.
GB/T3094-1986 (cold drawn seamless steel pipe shaped steel pipe). Mainly used in the production of various structural components and parts, its material for high-quality carbon structural steel and low alloy structural steel.
GB/T8713-1988 (Precision I.D. Seamless Steel Tubes for Hydraulic and Pneumatic Cylinders). Mainly used in the production of hydraulic and pneumatic cylinder barrel with precision internal diameter size of cold drawn or cold rolled seamless steel tube. Its representative material is 20, 45 steel and so on.
GB13296-1991 (stainless steel seamless steel pipe for boilers and heat exchangers). Mainly used in chemical enterprises, boilers, superheaters, heat exchangers, condensers, catalytic tubes and so on. Used for high temperature, high pressure, corrosion-resistant steel pipe. Its representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
GB/T14975-1994 (structural stainless steel seamless steel pipe). Mainly used for general structure (hotel, restaurant decoration) and chemical enterprise mechanical structure with atmospheric and acid corrosion resistance and have a certain strength of the steel pipe. Its representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
GB/T14976-1994 (stainless steel seamless steel pipe for fluid transportation). Mainly used for conveying corrosive media pipeline. The representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti and so on.
YB/T5035-1993 (seamless steel pipe for automobile half shaft casing). Mainly used in the production of automotive half shaft casing and drive axle housing axle tube with high quality carbon structural steel and alloy structural steel hot rolled seamless steel pipe. Its representative materials are 45, 45Mn2, 40Cr, 20CrNi3A and so on.
API SPEC5CT-1999 (casing and tubing specification), is the American Petroleum Institute (American Petreleum Instiute abbreviated as API) compiled and released in the world. Among them: casing: from the surface of the ground into the drilling well, as a well-wall liner pipe, the pipe is connected by the joint hoop. The main materials are J55, N80, P110 and other steel grades, as well as hydrogen sulfide corrosion-resistant C90, T95 and other steel grades. Its low steel grade (J55, N80) can be welded steel pipe. Oil pipe: the pipe inserted into the casing from the ground surface up to the oil layer, which is connected between the pipes through the joints or the whole. Its role is to pump the oil layer oil through the oil pipe to the ground. The main materials are J55, N80, P110, and hydrogen sulfide corrosion-resistant C90, T95 and other steel grades. Its low steel grade (J55, N80) can be welded steel pipe.
API SPEC 5L-2000 (pipeline pipe specification), is the American Petroleum Institute compiled and released in the world.
Line pipe:It is the oil, gas or water that shafts out of the ground and is transported to the oil and gas industry through line pipe. Line pipe includes seamless and welded pipe two kinds, its pipe end has a flat end, with threaded end and socket end; its connection for the end of the welding, hoop connection, socket connection and so on. The main materials of the pipe are B, X42, X56, X65, X70 and other steel grades