Straight seam welded steel pipe requirements mechanical tests should be done 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, to maintain a minute without leakage. Eddy current testing method allows to replace the hydrostatic test. Eddy current testing performed in GB7735 "pipe eddy current testing method" standard. Eddy current testing method is to probe the rack, testing and maintaining the weld 3 ~ 5mm away by fast-moving steel pipe weld comprehensive scanning, eddy current flaw detection signal by automatic processing and automatic sorting, achieve the purpose of testing. After testing the required pipe length cut with flying saw, the flip-line. Both ends of the pipe should be chamfered flat head, print marks, finished hexagonal tubes tied after packaging factory. The main processing method for processing method straight pipe joints are: Forged steel: the use of a reciprocating hammer impact force or pressure to press the blank changed our desired shape and size a press molding method. Extrusion: a steel metal placed in closed extrusion Jane, pressure end of the metal from the extrusion die orifice to obtain a predetermined shape and size have finished with the processing method used for the production of non-ferrous metal sheet steel . Rolling: The steel metal blank through a gap (of various shapes) rotating rolls, due to compression of the material the roll bearing steel production section reduction, the length of the increased pressure processing method. Virtue is a subordinate branch pipe gcr15 bearing steel Liaocheng virtue Pipe Co., Ltd., specializes in large diameter thick wall LSAW pipe in the development, production, and sales. Factory located in Liaocheng City Development Zone, Airport Road, covering 200 acres, now has integrated management, bearing steel pipe plant, finance, technical equipment, quality management standards of the bearing steel, and other departments. College educated staff of more than 90% of professional and technical personnel dozens of people. The company now has two LSAW pipe production line can produce 350 --- 1420MM, wall thickness 6 --- 80MM, Length 6 --- 12 meters in diameter, steel grade 70 # or less submerged arc welded pipe oil and gas. Bearing steel gcr15 | Zibo bearing steel | Pipe Co., Ltd. is provided by virtue of virtue Liaocheng Pipe. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead virtue of Industry and you work into the brilliant, for a better future!