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Spiral steel pipe little knowledge

更新日期:2013-09-16  浏览:1316

Spiral steel pipes are widely used industrial, construction and other industries of a steel. It was based on the strip steel rolled plate of raw materials, often warm extrusion molding, with automatic double wire welding double-sided submerged arc welding technology with the spiral seam pipe. Mainly used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction.

Spiral steel pipe for liquid transportation: water supply and drainage. For gas, gas, steam, liquefied petroleum gas. For structure: piling pipe, bridge; Dock, road, building structural tube, etc. It's in conveying gas, transport has played a large role.

Spiral steel tube confined fluid conveying with spiral seam submerged arc welding steel tube is mainly used for conveying oil, Carbon steel elbow roll groove natural gas pipeline; Pressurized fluid conveying with high frequency welding steel pipe, spiral seam with high-frequency welded lap welding method, used in pressurized fluid conveying spiral seam high frequency welding steel pipe. Steel tube confined ability, good plasticity, easy to welding and processing molding; General low-pressure fluid conveying spiral seam submerged arc welding steel pipe, use double-sided automatic submerged arc welding or welding by one side into the legal system for water, gas, air and steam general low-pressure fluid conveying with submerged arc welding steel pipe.

The strength of the general higher than straight seam welded pipe, use a narrow billet production of larger diameter welded pipe, you can also use the same width of billet in the production of different pipe diameter welded pipe. But compared with the same length of straight seam pipe, weld length by 30 ~ 100%, and the production speed is low. As a result, a small diameter welded pipe are mostly with straight seam welding, large diameter welded pipe for the most part adopts spiral welded.

Compared to the steel pipe and round steel solid steel bending torsional strength phase at the same time, the weight is lighter, is a kind of economic cross section steel, widely used in the manufacture of structural and mechanical parts, steel used in the construction scaffolding, etc. With steel pipe manufacturing annular parts, can improve material utilization, simplifying the manufacturing process, material saving and processing time, such as rolling bearing ring, jack sets, at present has been widely made from steel pipe. Steel pipe or all kinds of conventional weapons indispensable materials, gun, gun barrel to steel pipe manufacturing. Steel pipe according to the cross-sectional area in the shape of  two roll rotary piercing machine different can be divided into circular tube and special pipe. Due to the equal conditions, the circumference circle area is the largest, with circular tube can deliver more fluid. In addition, the circle cross section under radial pressure, the internal or external stress is relatively uniform.

Spiral steel pipe is closely related to our life, our drainage, exhaust gas, gas, gas is inseparable from the spiral steel pipe.

 

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