Common Misunderstanding of Stainless Steel Tube Selection

Any two open and has a hollow cross-section, and its length and cross-section of the circumference of the larger than the steel, can be called steel. When the length and the circumference of the cross section of a small comparison, can be called pipe or pipe fittings, they are attributed to the scope of pipe products. It is an economical cross-section steel and is a major commodity in the steel industry. It is usually dominated by 8% -16% of the total amount of steel products. It is widely used in the national economy. Because of the hollow section of the steel pipe, it is best suited for the delivery of liquid, gas and solid pipelines. Compared with the same weight of round steel, the pipe has a large coefficient of cross-section and torsional strength, so it also becomes a variety of machinery and the most important structural material in construction.

Structures and parts made of stainless steel have a greater modulus of section than solid parts at equal weight. Therefore, the stainless steel pipe itself is a metal-saving economic section of the steel, which is an essential component of high-performance steel, especially in the oil drilling, training and transportation industries need larger, and second geological drilling, chemical industry, building industry, many kinds of steel pipes are also required in the machinery industry, in the manufacture of aircraft and automobiles, in boilers, medical equipment, furniture and bicycle manufacturing. In recent years, with the development of new skills such as atomic energy, rockets, missiles and aerospace industry, the orientation of stainless steel pipe in the defense industry, science and technology and economic construction has become more and more important.

Stainless steel tube variety, use is not the same, their skills are pleading, production methods are also different. Now produced steel pipe diameter planning 0.1-4500mm, wall thickness planning 0.01 ~ 250mm. TIX points for its characteristics, usually according to the following method of classification of steel.

1. According to production methods classificationStainless steel pipe production method is divided into two categories of seamless pipe and welded steel pipe, seamless steel pipe can be divided into hot-rolled pipe, cold-rolled pipe, cold drawn tube and kneading pipe, cold drawn, cold-rolled steel is the second processing; pipe is divided into straight seam welded pipe and spiral welded pipe.
2. According to the cross-sectional shape of stainless steel tube classificationStainless steel tube cross-sectional shape can be divided into round tube and shaped tube. Special-shaped tubes have a rectangular tube, diamond-shaped tube, oval tube, the six-tube, P Plus tube and a variety of cross-section asymmetric tube. Profiled pipe is widely used in various structural parts, things and mechanical parts. Compared with the tube, shaped tube usually have a larger moment of inertia and section modulus, a greater resistance to bending, torsion can greatly reduce the weight of the structure, saving steel.
3. According to the classification of stainless steel tube materialStainless steel pipe is usually divided according to the quality of carbon steel pipe material, excellent carbon structural steel, alloy structural tubes, alloy steel, bearing steel, stainless steel and stainless steel pipe to meet the extraordinary pleasures and to meet the bimetallic composite pipe, coating and coating pipe.
4. According to the tube end shape classificationStainless steel tube according to the state of the end can be divided into light pipe and tube (with steel pipe). Cartridge can be divided into the usual car wire (transport of water, gas and other low-pressure pipe, the choice of usually cylindrical or tapered pipe thread connection) and the exceptionally threaded pipe (oil, geological drilling pipe, for the first car wire tube, use Special thread connection), for some extra pipe, to compensate for the influence of the thread on the pipe end strength, pipe end thickening (inner thickening, outer thickening or surface thickening) is usually performed before the wire.
5. According to the use of classificationIt can be divided according to the use of oil well pipe (casing, tubing and drill pipe, etc.), pipelines, boiler tubes, mechanical pipe, hydraulic prop tube, cylinder tube, geological tube, chemical tube ) And vessels and so on.

A worker from a steel pipe company, which is located in China.