Stainless Steel Pipe Tube According to the material points
Classification of editing
Stainless steel pipe according to the material can be divided into ordinary carbon steel, high quality carbon structural steel, alloy structural pipe, alloy steel, bearing steel, stainless steel tube, and to save precious metals and meet the special requirements of double metal composite tube, pipe coating and coating, etc. There are various kinds of stainless steel tubes, different USES, different technical requirements and different production methods. The current diameter range of steel tube is 0.1%-4500mm and the thickness range of 0.01 ~ 250mm. In order to distinguish their characteristics, steel pipes are classified according to the following methods.
Mode of production
The stainless steel tube is divided into two categories: seamless tube and welded pipe. Seamless steel tube can be divided into hot rolled tube, cold rolled tube, cold drawing tube and extruded tube. Cold drawing and cold rolling are secondary processing of steel pipe. The welded pipe is divided into straight seam welding tube and spiral welded pipe.
The section shape
The stainless steel tube can be divided into tubes and shaped tubes according to the shape of the cross section. There are rectangular tubes, rhomboidal tubes, elliptical tubes, hexafil tubes, and all kinds of dissymmetric tubes. The profile is widely used for various structural parts, tools and mechanical parts. Compared with the circular tube, the profile tube has a large inertia moment and section modulus, with a large bending resistance and torsion resistance, which can greatly reduce the structural weight and save steel.
The stainless steel tube can be divided into equal sections and transsections. There are tapered tubes, cascaded tubes and periodic tube tubes.
The stainless steel tube can be divided into the tube and the tube (with the threaded steel pipe) according to the state of the pipe. Car wire tube and can be divided into ordinary car wire tube (water, gas, such as low pressure tube, using common cylindrical or tapered pipe thread connection) and special thread tube (geology, oil drilling pipe, for important car wire tube, the use of special threaded connection), for some special tube, to compensate for the influence of the strength of pipe end of thread, often in a car wire before pipe end upset (internal upset, more external upset or inside and outside).
According to use can be divided into oil well pipe (casing, tubing and drill pipe, etc.), line pipe, boiler pipe, mechanical structure, hydraulic prop, cylinder pipe, geological, chemical pipe (high pressure chemical fertilizer pipe, oil cracking pipe) and tube for ships, etc.
Wenzhou's stainless steel industry
Wenzhou's stainless steel industry is a new industry, which originated in the early 1980s and has gained popularity and influence in the domestic market after 20 years of exploration and exploration.
At present, more than 130 production enterprises have good development and expanding momentum. There are 38 perforated equipment in the whole industry. The cold rolling, cold drawing equipment 500, the smelting equipment six, all adopt the furnace outside refining, the other equipment is complete. The production capacity and scale of the enterprise are expanding and increasing. In 2001, there were five enterprises with a value of over 100 million yuan, and more than 10 enterprises were rated as city and district star enterprises.