stainless steel welded pipe

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  • Specifications of Stainless Steel Tubes:

    1. Standard: GB, ASTM, JIS, DIN
    2. Grade: 201,202,301, 321, 304, 304L, 316, 316L, 409, etc
    3. OD range: 8mm-50mm
    4. Wall thickness range: 0.3mm-30mm
    5. Length: max.18000mm or as demand
    6. Surface finish: Polishing (180#,220#,240#,320#400#,600#), Hairline, aid pickling and so on
    7. Manufacture technology: cold drawn/cold rolled/hot rolled
    8. Type: Seamless & Welded

    Welding stainless steel pipe Standards: ASTM A249, ASTM A312. JIS 3463 OR DIN17457.
    Wall Thickness: ranges from 0.2mm to 16mm. Outer Diameter: ranges from 19mm to 1016mm. Surface of the welding stainless steel pipe: No.1, 2B, Polishing, Electroplating
    1. Standard:ASTM A554 / DIN 17455
    2. Grade: 201, 202, 301, 309, 310S, 321, 304, 304L, 316, 316L, 409, etc
    3. OD range: 8mm-1000mm
    4. Wall thickness range: 0.3mm-30mm
    5. Length: as demand
    6. Surface finish: pickling, annealing, manual polish and mechanical polish, mirror polish
    7. Manufacture technology: hot rolled, cold drawn
    8. Type: Welded

    Standards:

    ASTM A312 Standard Specification for Seamless and Welded Austenitic Stainless Steel Pipe
    ASTM A358 Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Steel Pipe
    ASTM A790 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe intended for General Service
    ASTM A928 Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded With Addition of Filler Metal
    GB/T 21832 Austenitic-Ferritic (duplex) Grade Stainless Steel Welded Tubes and Pipes
    GB/T 12771 Welded Stainless Steel Pipes for Liquid Delivery
    HG20537.3 Chemical apparatus of stainless steel welded pipe technology requirements
    HG20537.4 Chemical apparatus of stainless steel welded pipe technology requirements of large diameter

    Advantages:

    1. Raw material choices. 

    All of raw stainless steel coils are from YUSCO, Baosteel, TISCO.
    From slitting to production, we care more about the tolerance and raw material mechanical parameters to guarantee the tube quality control.

     

    2. Various mold choices

    With years of development, we are able to produce various OD tubes with different thickness.

     

    For OD<50mm, we have induced automatic welding machine. The daily production is 150 tons.

     

    For OD>50mm,we apply advantageous manual welding process.

     

     

    4. Pipe Surface Pickling. 

     

    5. Quality Control(Water pressure check)

    For every welded tube diameter <50mm, we strictly test every welded tube in order to guarantee the quality for our customers.