Cangzhou Bohai Steel Pipe Co., Ltd. production and supply of electricity standard alloy steel elbow elbow, and cheap. P91 alloy tube is so widely used. P91 alloy tube for general use by ordinary carbon steel, low-alloy structural steel or alloy structural steel rolling, yield up to 16mn alloy steel elbow, mainly used for transporting fluids or structural components. 2.2, depending on the use of three types supply: a, according to the chemical composition and mechanical properties of supply; b, according to the mechanical properties of supply; c, according to hydrostatic testing supplies. Press a, alloy steel elbow pipe 15crmo b class supply, such as to withstand the liquid pressure, but also pressure test. 2.3, P91 alloy tube boiler with a special purpose P91 alloy tube, geology and petroleum with P91 alloy pipe seamless pipe and other. Cangzhou Bohai Steel Tube Co., Ltd. specializes in producing alloy pipe elbow P91 GB / T8162-87 provisions 4.1 specification: Hot tube diameter 32 ~ 630mm. Wall thickness of 2.5 ~ 75mm. Cold-rolled (cold drawn) tube diameter 5 ~ 200mm. Wall thickness of 2.5 ~ 12mm. 4.2, the appearance of quality: the inner and outer surfaces of the steel pipe shall not have cracks, folded, rolled off, separation, hairline and scarring defects. These defects should be completely removed, the wall and the outer diameter than the negative deviation after clearing. Alloy steel elbow elbow manufacturers _ _ Cangzhou Bohai (Certified Merchant) Ltd provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) is specialized in the "elbow, flanges, reducers, hangers, flanging, intubation, welded flanges, pipe wear" business, Companies adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Zhangsong Wei.