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  • Duplex Stainless Steel Lined Pipe - China

    price: check with company for price

    Liner: 2205 (S31803), 2506 (S31804, S32740), 2507···Etc;
    Backing: API 5L, API 5CT, ASTM, ASME···Etc Duplex stainless steel (DSS) refers to the ferrite and austenite each accounted for about 50% of the content is generally less phase also need to reach at least 30% of the stainless steel. Because the characteristics of two-phase structure, by properly controlling the chemical composition and heat treatment process, so that duplex stainless steel combines advantages of austenitic stainless steel and ferritic stainless steel. The duplex stainless steel has a combination of high strength and resistance to chloride stress corrosion of ferritic stainless steel and excellent toughness and weldability of austenitic stainless steel, it is these superior properties make duplex stainless steel as a structural materials welded rapid development, since the 1980s has be juxtaposed with martensitic, austenitic and ferritic stainless steel. Technical details at a glance:
    • Size range from OD 15 mm (0.6") up to142, 0 mm (56")
    • Random lengths up to 12 m (up to 12 m without circumferential weld)
    • Production acc. to API or ISO Advantages of mechanically lined pipes:
    • Cost savings of up to 40 % compared to solid pipes
    • High corrosion resistance at the inside and high pressure resistance at the outside
    Common alloy grades:
    • S31803(2205)、S32750(2507)


    Company Contact:


    • Phone: 86-021-61119089

    • Address: 8th Floor, Area c, High-Tech Building, No.900 Yishan Rd., Xuhui District, Shanghai, shanghai, shanghai, China

    • Email: Email


    Published date: March 6, 2017 -

    • Business Description: BOBPIPE Engineering (Shanghai) Co., Ltd. Registered at Shanghai Pilot Free Trade Zone which owned by JIangsu Zhongxin Pipe Sci-tec CO., Ltd. with a credit status of AAA. BOBPIPE is engaged in not only a global provider of CRA-Clad & CRA-Lined pipe, Normal Pipes & Tubes, Fittings, Flanges etc, but also Piping system Engineering, and technology solutions. Our factory located at Jiangning Hushu Industrial Concentration district of Nanjing, capital of Jiangsu and a famous historical and cultural city boasting a glorious history of being acted as the ancient capital in six past dynasties, the company covers an area of 46000㎡. the company comprises departments of technology, quality inspection, production, general affairs, marketing center, financial and storage etc. Among, six senior technicians and 20 technical staff are working in the departments. The 32 forward spinning automatic production line self-developed by the enterprise(patent number: ZL 2010 1 0517432.1 ZL 2009 2 0233533.9) could product the inner lining stainless steel compound steel pipe of DN15-DN1400 and a new generation of metallurgy composite pipes like the bimetal composite pipes of φ20-φ1420 for the use of petrochemical industry and so on with an annual production capacity of 128 thousand tons. The enterprise has passed certifications of ISO9000, API SPEC Q1, API 5LD and HSE as well as the pressure piping components type test certificate.

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