Q235B straight seam steel pipe is widely used
Jul 13, 2018
The straight steel pipe is a steel pipe longitudinally parallel to the steel pipe. They are usually divided into metric welded pipe, welded thin-walled tube, transformer cooling oil pipe and so on. The longitudinal welded pipe has the advantages of simple production process, high production efficiency, low cost and rapid development. The strength of a spiral welded pipe is generally higher than that of a straight welded pipe. It can produce a larger pipe with a narrow blank, and the same width of the blank can be used to produce a pipe with different diameters. However, compared with the straight seam pipe of the same length, the weld length is increased by 30~100% and the production speed is low.
General welded pipe: General welded pipe for conveying low pressure fluid. It can also be manufactured by easy welding 0317 standard model 6012 and steel mother 755 mild steel. The steel pipe should carry out the test of water pressure, bending and flattening. There is a certain requirement on the surface quality, usually the delivery length is 4-10m, and the delivery is often required. The specification of welded pipe is different from the nominal diameter of nominal diameter (millimeter or inch). The welded pipe is divided into two kinds, ordinary steel pipe and thick steel pipe according to the specified wall thickness, and two kinds of pipe are threaded and without thread.
The submerged arc welding technology is submerged arc welding technology. The filler is welded and the particle welding flux is submerged arc. The production process can be abbreviated as the straight seam steel pipe of submerged arc welding. The production technology of submerged arc welding straight seam steel pipe has JCOE forming technology and roll forming and submerged arc welding technology. When the diameter is large, it may be rolled with two pieces of steel plate, which will form a double weld phenomenon. Standard low pressure steel pipe production standards, oil and gas steel pipe production standards, and implementation standards of API 5L pipeline steel can be implemented. The pressure parameters are mainly 2ST/T, S is yield strength, and T is wall thickness. Now submerged arc welding has been developed into double wire submerged arc welding and multi wire submerged arc welding, and the efficiency has been further improved.
