Cold-drawn pipe with drawing, extrusion, piercing and other methods of production of the entire steel pipe surface without seams. It is a round, square, rectangular steel with a hollow cross-section and no seams around it. It is made from steel ingot or solid billet by piercing into a rough tube, and then made by cold-drawing. The following gives you an introduction to the cold-drawn pipe standard.
First, the cold-drawn pipe standard
Cold steel pipe process to be used in the drawing, extrusion and piercing methods for production, and in the production of steel pipe, there is a side to be hollow section, and the periphery should also be looked at whether there is no welded round holes.
For the cold-drawn pipe, I believe we do not know much, although we often see its shadow, but do not know how it is made? What are the standards? Today I will give you an introduction to the cold-drawn pipe standard as well as the price.
The raw material of cold-drawn tube is hot-rolled steel tube, after pickling the hot-rolled steel tube after the removal of the oxide skin after the cold chain tie, the finished product is rolled hard volume, because in the production process, the continuous cold deformation of the steel tube and then caused by cold hardening, so that the rolled hard volume of strength and hardness have risen, the toughness and plastic indexes have declined, so the stamping properties are also deteriorating, because it can only be used for simple deformation of parts, rolled hard volume of strength and hardness has increased, tough plastic indicators decline, so the stamping properties are also deteriorating, because it can only be used for simple deformation of parts, rolled hard rolled tube. Used for simple deformation of parts, rolled hard coil can also be used as a raw material for hot-dip galvanizing plant
Because the hot-dip galvanizing unit facilities are degraded, so in general, the process of cold-drawn pipe is to go through the base of the pipe bad and then heated, in the punching, and then annealing, and then after completion of pickling, and then it is greased, that is, copper-plated, and then there are multiple cold-drawn, that is, we said that the Cold rolling, there is a bad tube and heat treatment, and finally after straightening but also after hydrostatic testing, commonly known as flaw detection, and finally into storage.
Cold-drawn tube is a mechanical structure, hydraulic equipment, size and precision and surface smoothness are subject to fine calculation and design, but also the use of precision seamless tube manufacturing mechanical structure and hydraulic equipment, which can greatly save on machining hours, but also to improve the use of materials, for the use of commodities is also able to improve the amount of appropriate.
Second, the price of cold-drawn tube
Domestic and American standard extrusion/cold-drawn pressure-resistant - corrosion-resistant ?316, 310S stainless steel seamless tube? Price:36.00
16mn large diameter seamless steel pipe? Cold drawn hot rolled thin wall and thick wall seamless steel pipe? Price:2.65
ASTM?A648-1990a?Cold-drawn steel wire for pre-stressed concrete pipeline? Price: 60 yuan
Genuine GB/T?31315-2014 Cold-drawn or cold-rolled precision welded steel pipe for mechanical structure? Price:$12.5
Supply 20# seamless steel pipe? Hot rolled 45# seamless steel pipe? Cold drawn 20# seamless steel pipe Q345B seamless steel pipe? Price:$3.10
Long-term sales?15CRMO alloy seamless pipe? Cold drawn steel pipe factory? Alloy seamless steel pipe? Price:6.50 yuan
By the introduction of the above cold drawn pipe standard, I believe that you have an understanding of the cold drawn pipe, its production process is more complex, but the use of a wide range of applications, many of our daily construction industry can not do without it, cold drawn pipe is a new type of high-tech energy-saving products.
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