T91 steel pipe is a steel pipe, T91 steel in the United States as a tree Ridge National Laboratory and the US Combustion Engineering Metallurgical Materials Laboratory cooperation in the development of the new martensitic steel. It is based on reducing the carbon content of steel 121MoV t91, strictly limit the content of sulfur, phosphorus, and add a small amount of vanadium, niobium alloying elements. According ASTM213 / A213M-85C Shanghai t91 alloy tube, T91 steel chemical composition shown in Table 1. T91 steel and the corresponding number of German steel X10CrMoVNNb91, Japanese steel for HCM95, France was TUZ10CDVNb0901. Table 1 T91 steel chemical composition% T91 alloy tube prices 5 production of high pressure boiler tube business is: t91 seamless steel pipe plant in Chengdu, using Pilger pipe mill, mainly produces large diameter P22,12Cr1MoV, P91 and small T91 boiler tube diameter; Hengyang Steel Tube Factory, horizontal continuous casting, rolling pipe mill use, the main production 12Cr1MoV boiler tubes; Shanghai Steel Plant, using precision pipe mill, the main production and G102 T91 small diameter boiler tubes; Beiman Special Steel Co., Ltd., using precision pipe mill, the main production and G102 12Cr1MoV small diameter boiler tubes; Wuhan Heavy Forging Co., Ltd. imported t91 alloy tube, using the Japanese used the big top pipe mill equipment, the main production P22,12Cr1MoV, A106B large Boiler tube diameter steel with low thermal conductivity, heat slower domestic subcritical pressure natural circulation boiler with welded finned tube membrane water wall, flat fins thick 6mm, width 12mm t91 alloy steel pipe 51X3.5_ Katherine source ( Certified) _ Haidian District 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.