Katherine source Pipe Co., Ltd. and the sale of wholesale and retail; one from the sale. Customers can pick and choose the desired length or other requirements. The library temporarily swap missing specifications, eliminating the need to run around you purchase hard. Arrange transportation of imported t91 alloy tube, large straight hair you can specify the location. Weekends and holidays, pick mention. The sale of seamless steel pipe, the company responsible for the overall quality tracking, you exclude worries. Katherine source Pipe Co., Ltd. Liaocheng commitments (1): to provide customers with special requirements of length, cut, cut, polished grinding services. (2): free all lifting costs, cutting costs, fees, library fees, real benefit to end users. (3): Live Billing - Loading - t91 seamless billing one-stop service to allow customers to sit in lounge to complete the whole process of delivery. The company sold all the stock material, the complete specifications. The company sold products in the industry in quality, lowest price, best service, fast and convenient logistics, welcome friends from all over the country come to consult, negotiate business! Company Name: Liaocheng Steel Pipe Co., Katherine source. T91 steel by alloying principle t91, especially adding a small amount of niobium, vanadium and other trace elements, high-temperature strength, oxidation resistance compared with 12 Cr1MoV steel has greatly improved, but the welding performance is poor. Bolt tests showed, T91 steel has a greater tendency to cold cracking, select preheated 200 ~ 250 ℃ Shanghai t91 alloy tube, interpass temperature 200 ~ 300 ℃, which can effectively prevent cold cracks. T91 weld heat treatment before, must be cooled to 100 ~ 150 ℃, holding 1 h; tempering temperature 730 ~ 780 ℃, holding time of less than 1 h. Domestic t91 alloy tube | Katherine source of steel (certified) | Wuhan 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.