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Hot Rolled Hollow Section Steel Tube , Heavy Wall Structural Square Tubing S275NH Grade

Categories Hollow Section Steel Tube
Brand Name: New-Era
Model Number: Seamless hot rolled
Certification: ISO9001/TS16949
Place of Origin: China
MOQ: 1ton
Price: Negotiation
Payment Terms: T/T, L/C
Supply Ability: 2000tons per month
Delivery Time: 20-30days
Packaging Details: bundles packing with plastic bags wrapped
Standard: EN10210-1 EN10210-2
Steel grade: S275NH S355NH DIN1.0493 1.0539 1.8750 1.8953
Size: Dia:30-600mm
Shape: Round,rectangular,Square,hexagonal
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    Hot Rolled Hollow Section Steel Tube , Heavy Wall Structural Square Tubing S275NH Grade

    EN10210-1 S275NH S355NH hot rolled seamless heavy wall hollow section steel tube , hollow bars

    DIN EN 10210-1 Hot finished Heavy Wall Steel Tubing of non-alloy and fine grain steels
    DIN EN 10210-1
    Hot finished structural hollow sections of non-alloy and fine grain steels
    Part 1: Technical delivery conditions
    Part 2: Tolerances, dimensions and sectional properties

    Cold forming:
    Process is done at ambient temperature
    Structrual hollow section manufacturing process:
    Structural hollow sections are manufactured by seamless or by welding.
    Welded sections manufactured by contiuous process.
    Electric welded hollow sections are supplied without trimming the internal weld bead.
    Delivery conditon:
    Qualities JR, J0, J2 and K2 - Hot finished
    Qualities N and NL - normalized. (normalized rolled)
    - for accelerated cooling +DC
    - for quenching and tempering +QT
    Surface conditon:
    The hollow sections have a smooth surface corresponding to the manufacturing method used; bumps, cavities or shallow longitudinal grooves resulting from the manufacturing process are permissible, provided the thickness is within tolerance.
    End: Square cut
    TABLE 1 Permissible deviations of the product analysis from the specified limits of the cast analysis specified

    ElementPermissible maximum content in the cast analysis
    % by mass
    Permissible deviation of the product analysis from specified limits for the cast analysis
    % by mass
    C≤0.20﹢0.02
    >0.20﹢0.03
    Si≤0.60﹢0.05
    MnNon-alloy ≤1.60﹢0.10
    Fine grain ≤1.70

    ﹣0.05

    ﹢0.10

    PNon-alloy ≤0.040﹢0.010
    Fine grain ≤0.035﹢0.005
    SNon-alloy ≤0.040﹢0.010
    Fine grain ≤0.030﹢0.005
    Nb≤0.060﹢0.010
    V≤0.20﹢0.02
    Ti≤0.03﹢0.01
    Cr≤0.30﹢0.05
    Ni≤0.80﹢0.05
    Mo≤0.10﹢0.03
    Cu≤0.35﹢0.04
    0.35<Cu≤0.70﹢0.07
    N≤0.025﹢0.002
    AItotal≥0.020﹣0.005

    a For S235JRH in thicknesses ≤16mm, the permissible deviation=0.04%C,and for thicknesses>16mm and ≤40mm the permissible deviation=0.05%C


    Normative References:
    EN 287-1 , Qualification test of welders – Fusion welding – Part 1: Steels
    EN 10002-1 , Metallic materials – Tensile testing – Part 1: Method of test at ambient temperature
    EN 10020:2000 , Definition and classification of grades of steel
    EN 10021:1993 , General technical delivery requirements for steel and iron products
    EN 10027-1 , Designation systems for steels – Part 1: Steel names
    EN 10027-2 , Designation systems for steels – Part 1: Numerical system
    EN10045-1, Metallic materials - Charpy impact test - Part 1: Test method
    EN10052, Vocabulary of heat treatment terms for ferrous products.

    Bibliography,
    DIN EN 10025-2, Hot rolled products of structural steels - Part 2: Technical delivery conditions
    for non-alloy structrual steels
    DIN EN 10025-3, Hot rolled products of structure steels - Part 3: Technical delivery conditions
    for normalized/normalized rolled weldable fine grain structure steels
    DIN EN 10210-2, Hot finished structural hollow sections of non-alloy and fine grain steels -
    Part 2: Tolerances, dimensions and sectional properties
    DIN EN 10219-1, Cold formed welded structural hollow sections of non-alloy and fine grain
    steels - Part 1: Technical delivery conditions
    DIN EN 10219-2, Cold formed welded structural hollow sections of non-alloy and fine grain
    steels - Part 2: Tolerances, dimensional and sectional properties
    Previous Edition:
    DIN EN 10210: 1994-09
    DIN EN 17120: 1984-06
    DIN EN 17121: 1984-06
    DIN EN 17123: 1986-05
    DIN EN 17124: 1986-05
    DIN EN 17125: 1986-05



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