t91 Pipe | Katherine source of steel (certified) | Mudanjiang t91 provided by source Pipe Co., Ltd. Liaocheng trillion. Liaocheng Katherine source Pipe Co., Ltd. (www.lczygg.com) is specialized in "Q345b seamless steel pipe, 35crmo seamless steel pipe, 42crmo seamless" enterprise, the company of "honesty, hard service" concept, for you provide the highest quality products and services. Welcome to inquire! Contact: Manager Wu. Katherine source pipe is in production, processing, storage and sales of integrated enterprise t91 alloy, annual sales of seamless pipe products factory and agency distribution: Cheng Gang, Xining, Baotou, Tianjin Steel, Steel and other major steel Factory spot quality seamless alloy pipe, large diameter thick-walled seamless pipe, galvanized pipe, stainless steel and other steel products; made of: 20 #, 35 #, 45 #, 16Mn, 27SiMn, 40Cr, 35CrMo, 12Cr1MoV, 15CrMoG, 42CrMo, 30CrMo, 38CrMoAl, 25CrMnMo, P110, P91, N80 and other performance standards for: precision light pipe (GB3639-2008), structural pipe (GB8162-2008), fluid pipe (GB8163-2008), low in pressure boiler pipe (GB3087-2008), high-pressure boiler pipe (GB5310-2 Guangdong Provincial Electricity Authority first welding training center T91 tube butt welding procedure qualification trails of Φ42 mm × 5mm actually made of. taken preheat temperature of 200 ℃ After welding cooling to 150 ℃, heat 1h t91 after tempering steel 42X3.5, tempering temperature is 750 ~ 780 ℃ t91, insulation 1h, heating and cooling rate of less than 5 ℃ / min. After welding, the appearance on the specimen examination, fracture examination, nondestructive testing, tensile and bending tests, the results are satisfactory, it also shows that the welding process is effective.