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    Specification

    Dingshang steel pipe can produce seamless steel pipe, dual-phase steel and nickel-based alloy products of various materials. Specific specifications and materials are shown in the table below.

    Seamless stainless steel pipe external diameter φ6-φ830mm,
    wall thickness 0.5-45mm
    U-Tube external diameter φ12-φ38mm, wall thickness 0.5-4mm
    （Special specifications can also be produced by negotiation between the two parties.）
    Main steel grades
    Serial number Steel grade Typical Steel Number (AISI)
    1. austenitic stainless steel TP304, TP304L, TP304H, TP316, TP316H, TP316Ti, TP316L, TP321,
    TP321H, TP347H, TP347HFG, 904L, TP310H, TP310S, TP317,
    TP317L, TP316LMo≥2.5; etc
    2. Duplex steel,Super duplex steel S31803; S32205; S31500; S32750
    2. Nickel based alloy N08825, N08904, N08028, N08800
    （Special steel grades can also be produced by negotiation between the two sides.）
    Heat Exchanger
    Main grade Standard Specification
    TP304,TP304H,TP316,
    TP316, TP316L,TP321    		 ASTM A213,ASME SA213,
    GB13296, JIS3463,
     DIN17458, EN10216-5    		 OD: 12.7-159mm
    WT: 0.5-8mm

    Boiler tube Boiler Tube
    Main grade Standard Specification
    TP304H,TP310H,
    TP316H,TP321H,
    TP347H,TP347HFG    		 GB5310,GB13296,
    ASTM A213, ASME 
    SA213,EN10216-5,    		 OD: 33-273mm
    WT: 2-20mm

    Marine Tube/Pipe
    Main grade Standard Specification Classification society certification
    TP304H,TP304L,
    TP347H, TP321,
    TP321H,
    TP316LMo≥2.5    		 GB14976,
    ASTM A312, A269,
    JIS G3459    		 OD: 6-273mm
    WT: 0.5-16mm    		 ABS,BV,CCS,
    DNV,GL,LR and RINA,etc.

    Instrumentation Tube
    Main grade Standard Specification
    TP304,TP304L,
    TP316, TP316L,
    TP317L,TP321,    		 GB/T14976,EN10216-5,
    DIN17456,DIN17458,
    ASTMA269,JISG3459    		 OD: 6-76mm
    WT: 0.5-6mm

    General Tubes & Pipes
    Main grade Standard Specification
    TP304,TP304L,
    TP304H, TP316,
    TP316H,TP316Ti,
    TP316L,TP321,
    TP316Mo≥2.5    		 GB/T14976,EN10216-5,
    DIN17456,DIN17458,
    ASTM A312,JISG3459    		 OD: 10.0-830mm
    WT: 1.65-45mm

    Duplex Tubes/Pipes
    Main grade Standard Specification
    S31803; S32205,
    S31500; S32750    		 ASTM A789 OD: 12.0-219mm
    WT: 0.5-14mm
    ASTM A790 OD: 10.0-273mm
    WT: 0.5-20mm

    Ni-Alloy
    Main grade Standard Specification
    N08825,N08904,
    N08028,N08800    		 ASME SB163, ASTM B163,
    ASME SB423, ASTM B423,
    ASME SB407, ASTM B407,
    ASME SB668, ASTM B668    		 OD: 16-273mm
    WT: 1.65-20mm

    Add：No. 276 Yongning Road, Songyang County Industrial Park, Lishui City, Zhejiang Province

    Tel：+86 0578-8818199

    Fax：+86 0578-8818195

    E-mail：hui@ds-steel.cn

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