Katherine source Pipe Co., Ltd. Liaocheng perennial sales Gang, Baosteel, Baotou Steel, Anshan Iron and Steel and other major steel seamless spot, standing resource material for the: 20 #, 35 #, 45 #, 20G, 16Mn, 27iMn, 12Cr1MoV , 15CrMo, 35CrMo, T91, ST45.8-3, SA106B, 1Cr5Mo, Cr5Mo, A335P22, A335P11, STFA23,10CrMo910 so on. Execution GB: Structural tube GB / T8162-1999, fluid management GB / T8163-1999, low-pressure boiler tube GB / T3087-1999, high pressure boiler tube, geological drilling pipe, GB / T5310-1995, fertilizer tube GB / T6479-86, petroleum cracking tube GB / T9948-88, the ship dedicated pipe GB5312-99, t91 alloy seamless pipe, stainless steel pipe, stainless steel seamless pipe, (such as 304,304L, 321,316,316L, 310S, etc.) various steel t91, t91 Shanghai structural steel alloy pipe, q345b seamless tube. Welding thermal cycle grown grains have a significant impact on the heat-affected zone of welded joints, especially close to the heating temperature is the highest fusion zone. When the cooling rate is small, in the HAZ will appear coarse massive ferrite and carbides tissue import t91 alloy tube, the plastic steel decreased; the cooling rate is large, due to the generation of coarse martensite also make plastic welded joints decreased. Shanghai t91 alloy steel pipe _ Katherine source (certified) _ Baoji 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.