Shandong Q345B seamless | virtues of Industry (certified) | seamless

Soldering manganese steel 16 Mn steel pipe 16 is a high strength low carbon steel than ordinary low-alloy steel, in building 16 Mn seamless pipe factory, with 16 manganese steel instead of carbon steel pipe generally can be to the state save a lot of steel. 16 Mn has a certain hardening tendency, in the sub-zero cold welding, there may affect the mechanical properties of a brittle structure in the welded joint, or in the weld and heat-affected zone, resulting in cracks and other phenomena. Required combat readiness, some 16 manganese steel pipeline projects, require welding work in the Northeast winter conditions, 16 manganese steel pipe soldering field (refer to the following -10 ℃), there is no mature experience abroad. Therefore, soldering is the key to 16 manganese steel pipeline construction quality assurance. Straight seam welded steel pipe requirements should be doing mechanical performance test and flattening test and flaring test, and to meet the requirements of the standard. Pipe should be able to withstand a certain internal pressure, 2.5Mpa pressure test conducted, if necessary, for a minute without leakage. It allows use of eddy current testing method instead of the hydrostatic test. Eddy current test performed in GB7735 "pipe eddy current testing method" standard. Eddy current testing method is to probe the rack, testing and weld holding 3 ~ 5mm away by fast-moving steel pipe weld comprehensive scanning, detection signal by the eddy current flaw detector of automatic processing and automatic sorting, to achieve the purpose of testing. Pipe inspection after a predetermined length cut with flying saw, the flip-line. Both ends of the pipe should be chamfered flat, print mark, after tying the finished works hexagonal packaging factory. The main processing methods and processing methods straight pipe joints are: Forged steel: the use of a reciprocating hammer impact force or pressure to press the blank change to our desired shape and size of a pressure processing method. Extrusion: metal is placed in a sealed steel extrusion Jane Shandong Q345B seamless, pressure is applied at one end of the metal from the extrusion die orifice to obtain a predetermined shape and size have finished with the processing method of seamless pipe , used for the production of non-ferrous metal sheet steel. Rolling: The steels metal blank by a pair of gap (shapes) of rotation of the roll, the roll due to the compression of the material cross-section is reduced, increasing the length of the press working method. Shandong Q345B seamless | virtues of Industry (certified) | Seamless Ltd. Liaocheng by virtue of Industry. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) Shandong Liaocheng, steel leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In virtue tube industry leadership with the staff warmly welcome all inquiries negotiations to create the virtues of Industry a better future.