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    Fine Grain Steels Cold Formed Welded Structural Hollow Sections

    Fine Grain Steels Cold Formed Welded Structural Hollow Sections

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    • Supply TypeManufacturer, Exporter, Supplier
    • Preferred Buyer Location All over the world

    We bring to afore, the Fine Grain Steels Cold Formed Welded Structural Hollow Sections that is compliant with the highest standards of quality, resistivity, strength and durability. Also, these....
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    Torich International Co.,Ltdverified-icon
    location China
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    • calendar Member Since 10 Years
    • building Nature of Business Manufacturer
    • Year of Establishment 1997

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    We bring to afore, the Fine Grain Steels Cold Formed Welded Structural Hollow Sections that is compliant with the highest standards of quality, resistivity, strength and durability. Also, these Hollow Sections are scrutinized unerringly to ensure peerless performance to the clients. Place order with us; medium, bulk or bespoke & fetch lucrative deals. Also, we ensure timely global deliveries.
    Details :

    • Place of Origin - China
    • Brand Name - Torich
    • Certification - ISO 9001 -2008 , TS16949
    • Model Number - EN10219-2
    • Minimum Order Quantity - 5MT
    • Price - USD600-1100per ton
    • Packaging Details - Anti-Rust Protection In bundles with seaworthly packing
    • Delivery Time - 30~40days Payment Terms - L/C, T/T
    • Supply Ability - 6000MT/Month
    • EN10219-1 EN10219-2  Cold Formed Welded Structural Hollow Sections of Non-Alloy and Fine Grain Steels
    • Part 1 - Technical delivery condition
    • Part 2 - Tolerances, Dimensions and Sectional Properties
    • Structural hollow section manufacturing process - Structural hollow sections are manufactured by electric weding or submerged arc welding without subsequent heat treatment. Hollow sections manufactured by a continuous process shall not inlude the welds used to join the lengths of strip prior to formning the hollow section, except that for hlically welded submerged arc-welded (SAW) hollow sections, such welds shall be permitted when tested in accordance with 9.4.3.0 EN10219-1, EN10291-2.
    • Delivery conditions - The hollow sections are delivered cold formed without subsequent heat treatment except that weld seam maybe in the as welded or heat treated condition
    • Note - For SAW hollow sections above 508 mm outside diameter it may be necessary to perform a warm shaping operation, which does not affect the mechanical properties, in order to meet the out-of-roundness tolerance requirements.
    • Suitability for hot dip galvaninzation: The products are sutibale for hot dip galvanization.

     
    Products forms :

    • CFCHS = cold formed circular hollow section
    • CFRHS = cold formed square or rectangular hollow section

     
    Charecteristics :

    • Tolerances on dimensions and shapes
    • Elongation
    • Tensile strength
    • Yield strength
    • Impact strength
    • Weldability (chemical composition)

     
    Normative references :

    • EN287-1, Qualification test of welders - Fusion welding  - Part 1 - Steels
    • EN10020-1, Metallic materials - Tensile testing - Part 1 - Method of test at ambient temperature
    • EN10020 -2000, Definition and classification of grades of steel
    • EN10021 -1983,General technical delivery requirements for steel and iron products
    • EN10027-1, Designation systems for steels - Part 1 - Steel names
    • EN10027-2, Designation systems for steels - Part 2 - Numericl systems
    • EN10045-1, Metallic materials - Charpy impact test - Part 1 - Test method
    • EN10052 -1993, Vocabulary of heat treatment terms for ferrous products
    • EN10168, Steel products - Inspection documents - List  of information and description
    • EN10204,  Metallic products - Types of inspection and description
    • EN10219-2 -2006, Cold formed welded structural hollow sections of non-alloy and fine grains steels - Part 2 - Tolerances, dimensions and sectional properties
    • EN10246-3, Non-destructive testing of steel tubes -  Part 3 - Automatic eddy current testing of seamless and welded ( except submerged arc welded ) steel tubes for the detection of imperfections.
    • EN10246-5, Non-destructive testing of steel tubes - Part 5 - Automatic full peripheral magnetic transducer/flux leakage testing of seamless and welded ( except submerged arc welded) ferromagnetic steel tubes for the detection of longitudinal imperfections
    • EN10246-8, Non-destructive testing of steel tubes - Part 8 - Automatic ultrasonic testing of the weld seam of electric welded steel tubes for the detection of longitudinal imperfections
    • EN10246-9, Non-destructive testing of steel tubes - Part 9 - Automatic ultrasonic testing of the weld seaml fo submerged arc-welded steel tubes for the detection of longitudinal and/or transverse imperfections
    • EN10246-10, Non-destrucitve testing of steel tubes - Part 10 - Radiographic testing of the weld seam of automatic fusion arc welded steel tubes for the detection of imperfections
    • EN1056,  Non-destructive testing of steel tubes - Qualification and competence of level 1 and 2 non-destructive testing personnel
    • CR 10261, ECISS information Circular 11 - Iron and steel - Review of available methods of chemical analysis
    • EN10266 -2003, Steel tubes, fittings and steel structural hollow sections - Symbols and definitions of terms for use in product standards
    • EN ISO 377, Steel and steel products - Location and preparation of seamless and test pieces for mechanical testing (ISO 377:1997)
    • EN ISO 643, Steels - Micrographic determination of the apparent grain size ( ISO 643:2003)
    • EN ISO 2566-1, Steels - Conversion of elongation valves - Part 1 - Carbon and low alloy steels ( ISO 2566-1:1984 )
    • EN ISO 9001 -2000, Qualiy management systmes - Requirements  ( ISO9001:2000)
    • EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical composition( ISO 14284:1996)
    • EN ISO 15607, Specification and qualification of welding procedures for metallic materials - General rules ( ISO15607:2003)
    • EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials - Welding procedure specificaiton - Part 1 - Arc welding (ISO 15609-1:2004)
    • EN ISO 15614-1, Specification and qualification of welding procedures for matallic materials - Welding procedure test - Part 1 - Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2004)


    Detailed Product Description :

    Product Name::Welded Steel TubeStandard::EN10219-2
    Material:Non-Alloy, Fine Grain SteelsShape:Round , Rectangle , Square

    TABLE 1 Tolerances

    SymbolUnitDefinition
    BmmNominal length of side of square hollow section.Nominal length of the shorter side of a rectangular hollow section
    C1/C2mmLength of corner region of a square or retangular hollow section
    Dmax/DminmmThe maximum and minimum outside diameter of a circular hollow section measured in the same plane
    HmmNominal length of the longer side of a rectangular hollow section
    MKg/mMass per unit length
    TmmNominal thickness
    O%Out-of-roundness
    TmmNominal thickness
    VmmTotal measured twist

    TABLE 2 Tolerances

    CharacteristicCircular hollow sectionsSquare and rectangular hollow sections
    Outside dimensions
    (D,B andH)    		±1% with a minimum of ±0.5mm and a maximum of ±10mmSide length
    (mm)    		Tolerance
    H,B ＜100
     
    100≤H,B≤200
    H,B＞200    		±1% with a minimum of
    ±0.5mm
    ±0.8%
    ±0.6%
    Thickness(T)For D≤406.4mm:
    T≤5mm ±10%
    T＞5mm ±0.50mm
    For D＞406.4mm:
    ±10% with a maximum of 2mm    		T≤5mm ±10%
    T＞5mm ±0.50mm
    Out-of-roundness(O)2% for hollow sections having a diameter to thickness ratio not exceeding 100â‘ ——
    Concavity/convexityâ‘¡——Max. 0.8% with a minimum of 0.5mm
    Squareness of side——90° ±1°
    External corner profile——See table 3
    Twist(V)——2mm plus 0.5mm/m length
    Straightness0.20% of total length0.15% of total length
    Mass(M)±6% on individual lengths













    TABLE 3 External Corner Profile

    Thickness
    T
    mm    		External Corner Profile
    C1,C2,or R1
    mm
    T≤6
    6＜T≤10
    10＜T    		1.6T to 2.4T
    2.0T to 3.0T
    2.4T to 3.6T








    TABLE 4 Tolerances On Lengthâ‘ 

    Type of lengthRange in mmTolerance
    Random length4000 to 16000 with a range of 2000 per order item10% of sections supplied may be below the minimum for the ordered range but not less than 75% of the minimum of the range
    Approximate length≥4000ï¹¢50mm
    0
    Exact length＜6000
    ≥6000 to ≤10000
    ＞10000    		﹢5mm
    0
    ï¹¢15mm
    0
    ï¹¢5mm  +1mm/m
    0
       








    TABLE 5 Tolerances On Height Of Internal And External Weld Bead For Submerged Arc Welded Hollow Sections

    Thickness(T)Maximum weld bead height(mm)
    ≤14.2
    ＞14.2    		3.5
    4.8


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