Life will see a lot of metal hose, is an important connector of the actual operating process, basically a very critical component, of course, with metal hose has a very useful feature is that it is more convenient to install, and sealing is good, but also many people in the engineers a very important selection of objects, that we know what metal hose is something. Next with the editor to understand, so that we can recognize some of the basic knowledge of the metal, choose the metal hose also know how to use.
What is the role of the general metal hose
Metal hose couplings (referred to as hose) is a high-quality flexible piping in modern industrial pipelines. It is mainly composed of a bellows, a mesh sleeve and a fitting. Its inner tube is a thin-walled stainless steel bellows with spiral or ring shape, and the outer net sleeve of the bellows is made of stainless steel wire or steel belt woven according to certain parameters. The fittings or flanges at both ends of the hose are matched with the fittings or flanges of the (customer-requested) pipeline.
Universal metal hose is one of the products of corrugated pipe series, which is an important connecting component in engineering technology, and is combined with corrugated flexible pipe, net sleeve and joint. Its main features are: easy to install, universal, good sealing
In a variety of gas, liquid pipeline system and length, temperature, position and angle compensation system as a compensation element, sealing elements, connecting elements and vibration-damping components, used in aerospace, petrochemical, mining and electronics, machinery and shipbuilding, medical and health care, textile and electronics, energy and construction and other fields.
China has released the national standard "corrugated metal hose general technical conditions" (GB/T14525-93) in 1993.
General metal hose product classification
There are two kinds of bellows used in general metal hose, one is spiral bellows; the other is annular bellows.
Spiral bellows
Spiral bellows is a pipe shell with corrugations arranged in a spiral, there is a spiral angle of ascension between two neighboring corrugations, and all the corrugations can be connected by a spiral line.
Ring bellows
Ring bellows is a tubular shell with ripples in the form of a closed circle, and the waves are connected in series with each other by the circular ripples. Ring corrugated pipe is formed by seamless pipe or welded pipe processing. Due to the constraints of the processing method, the length of a single pipe is usually shorter than that of a spiral bellows. The advantage of annular bellows is good elasticity, small stiffness.
General metal hose installation and use of precautions
1. National standard "corrugated metal hose general technical conditions" (GB/T14525-93)
2.? The bellows of metal hose is made of chromium-nickel austenitic type stainless steel, when used, pay attention to prevent nitrogen ion point corrosion and dilute sulfuric acid, dilute sulfuric acid corrosive damage.
3.? Users of equipment equipped with metal hose, pipe system after the water pressure test, should prevent rust block impact, chloride-containing ions sediment deposition, resulting in corrosion and mechanical damage.
4.? In the installation of metal hose need to prevent welding spatter scald and mechanical damage, otherwise it will cause leakage.
5.? Sealing hose system should strictly comply with safety regulations to prevent overpressure due to improper operation or other factors caused by overpressure caused by the hose pull off or burst.?
6.? Please carefully digest the metal hose installation method examples, and strictly in accordance with the correct sketch installation and use.
Universal metal hose versatility, metal hose is a kind of bellows, is a very important part of the project, the application is also very wide, in some need to have a flexible, some vibration, can be used, whether it is conveying steam, gas or air, oil. Some chemicals, in some emergency repair places can also be used as drainage, know the use of metal hose, know how to choose the right metal hose, I believe that through the introduction of the above you also know the knowledge of the general metal hose, I hope to help you!
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