Katherine source Pipe Co., Ltd. Liaocheng standing resource material for the: 20 #, 45 #, 16mn, [Q235B, C, D,] Q235, A, B, C, 27simn 20G, 20mn2,45mn2, PII, P22, T91, cr5mo , 35crmo, 42crmo, 12cr1mo, 15cr1mo, 10crmo910, and so on. Implementation of standards; structural tubes GB8162--1999, fluid management GB8163--1999, low-pressure boiler pipe GB3087-1999, high alloy pipe GB5310-1995 fertilizer tube GB6479--2000, oil cracking pipe GB9948--88 t91, GB18248--2000 seamless steel gas cylinders and so on. P91 Alloy uses 1, P91 alloy tube is so widely used. P91 alloy tube for general use by ordinary carbon steel, low alloy steel or alloy steel rolling, yield maximum structure, mainly used for transporting fluids or structural components. 2, depending on the use of three types supply: a, according to the chemical composition and mechanical properties supply; b, according to the mechanical properties of supply; c, according to hydrostatic testing supplies. Press a, b class supply pipe, such as to withstand the liquid pressure, but also pressure test. 3, P91 alloy tube boiler with a special purpose P91 alloy tube, geology and petroleum with P91 alloy pipe seamless pipe and other. Guangdong Provincial Electricity Authority had done the first welding training center Φ42 mm × T91 trails 5mm tube butt welding procedure qualification. Preheating temperature taken to 200 ℃, cooled to 150 ℃ t91 seamless welding, tempering heat 1h, the tempering temperature is 750 ~ 780 ℃, 1h import t91 alloy pipe insulation, heating and cooling rate of less than 5 ℃ / min. After welding, visual inspection of the specimens, the fracture inspection, non-destructive testing, tensile and bending tests, the results are satisfactory, it also shows that the welding process is effective. Shanghai t91 alloy steel pipe _ Katherine source (certified) _ Shaoyang t91 provided by source Pipe Co., Ltd. Liaocheng trillion. Liaocheng Katherine source Pipe Co., Ltd. (www.lczygg.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Katherine source leader in steel with the staff warmly welcome all inquiries negotiations to create Katherine source steel a better future.