Join chrome mainly to improve the oxidation resistance of heat-resistant steel, corrosion resistance, including when the chromium content of less than 5%, 600 ℃ began intense oxidation, while chromium amounted to 5% when it has good resistance to oxidation. 12Cr1MoV below 580 ℃ steel has good resistance to oxidation, corrosion depth of 0.05 mm / a, 600 ℃ when the performance begins to deteriorate, the corrosion depth of 0.13 mm / a. T91 chromium content increased to about 9% Shanghai t91 alloy tube, temperature can reach 650 ℃, the main measure is a solution of the matrix more chrome. T91 alloy pipe prices 5 production of high pressure boiler tube business is: Chengdu Seamless Steel Tube Plant import t91 alloy tube, using Pilger pipe mill, mainly produces large diameter P22,12Cr1MoV, P91 and T91 small diameter boiler tubes; 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 rolling pipe mill, the main production and G102 12Cr1MoV small diameter boiler tubes; Wuhan Heavy Forging Co., Ltd. t91 alloy tube, using the Japanese used the big top pipe mill equipment, the main production P22,12Cr1MoV, A106B large diameter tube boilers with low thermal conductivity of steel t91 heating slower domestic subcritical pressure natural circulation boiler membrane water wall tubes welded fins, fin flat thick 6mm, width 12mm t91 alloy tube | Dongcheng District t91 | Katherine source steel from Liaocheng Katherine source Pipe Co., Ltd. available. Liaocheng Katherine source Pipe Co., Ltd. (www.lczygg.com) in this field pipe devoted boundless enthusiasm and passion, Katherine source of steel has been customer-centric, the idea of ??creating value for customers, quality and service to win market share sincerely hope to cooperate with the community to create success, create brilliant. Related businesses are welcome inquiries, contact: Manager Wu.