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  • ASTM A334 Grade 3 Low-Temperature Tubes
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  • ASTM A334 Grade 3 Low-Temperature Tubes
     
     
     
     
     
    Standard Specification for
    Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service
     
     
     
     
    ASTM A334 Grade 3 Steel Tubes of minimum-wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. For ASTM A334 Grade 3 Low-Temperature Tubes smaller than 1 ⁄ 2 in. [12.7 mm] in outside diameter



    ASTM A334 Grade 3 Low-Temperature Tubes Quick Details
    Company Name: Beite steel pipe
    Country/Region: China
    Product Name:ASTM A334 Grade 3 Low-Temperature Tubes
    Manufacture:seamless or automatic welding
    Outside Diameter:3.4——12.7mm
    Wall thickness:0.9mm——3mm
    Length:6000mm、12000m or specified length as require
     
     
    Port of Shipment:Tianjin,China
    Payment:L/C or T/T
    Delivery: 7-15 days after payment
    Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden)

     
     
     
    Materials and Manufacture
    The tubes shall be made by the seamless or automatic welding process with no addition of filler metal in the welding operation.
     
     
     
     
    Heat Treatment
    Normalize by heating to a uniform temperature of not less than 1550 °F [845 °C] and cool in air or in the cooling chamber of an atmosphere controlled furnace.
     
    For the seamless process only, reheat and control hot working and the temperature of the hot-finishing operation to a finishing temperature range from 1550 to 1750 °F [845 to 955°C] and cool in a controlled atmosphere furnace from an initial temperature of not less than 1550 °F [845 °C].
     


     
    Chemical Composition of ASTM A334 Grade 3 Low-Temperature Tubes
     
    Element Composition, %      
    Grade 3
    Carbon, max 0.19
    Manganese 0.31–0.64
    Phosphorus, max 0.025
    Sulfur, max 0.025
    Silicon 0.18–0.37
    Nickel 3.18–3.82
    Chromium ...
    Copper ...
    Cobalt ...
    Molybdenum ...


     
    Mechanical Properties of ASTM A334 Grade 3 Low-Temperature Tubes
     
      Grade 3 
    ksi MPa
    Tensile Strength, min 65 450
    Yield Strength, min 35 240
    Rockwell B 90
    Brinell 190
     
    Mechanical property requirements do not apply to tubing smaller than 1 ⁄ 8 in. [3.2 mm] in outside diameter and with a wall thickness under 0.015 in.[0.4 mm].
     
     

     
    Impact Temperature


    Grade Impact Test Temperature 
    °F °C
    3 −150 −100


     
    Mechanical Tests
    Tension Test
    Flattening Test
    Flare Test (Seamless Tubes)
    Flange Test (Welded Tubes)
    Reverse Flattening Test
    Hardness Test
    Impact Tests
    Hydrostatic or Nondestructive Electric Test





     

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