TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C, T/T |
| Supply Ability | 6000MT/Month |
| Delivery Time | 30~40days |
| Product Name: | Welded Steel Tube |
| Standard: | EN10219-2 |
| Material | Non-Alloy, Fine Grain Steels |
| Shape | Round , Rectangle , Square |
| Packaging Details | Anti-Rust Protection In bundles with seaworthly packing |
| Brand Name | Torich |
| Model Number | EN10219-2 |
| Certification | ISO 9001:2008 , TS16949 |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 6000MT/Month |
| Delivery Time | 30~40days | Product Name: | Welded Steel Tube |
| Standard: | EN10219-2 | Material | Non-Alloy, Fine Grain Steels |
| Shape | Round , Rectangle , Square | Packaging Details | Anti-Rust Protection In bundles with seaworthly packing |
| Brand Name | Torich | Model Number | EN10219-2 |
| Certification | ISO 9001:2008 , TS16949 | Place of Origin | China |
| High Light | welded steel pipe ，welding steel tubing | ||
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 welding or submerged arc welding without subsequent heat treatment. Hollow sections manufactured by a continuous process shall not incude the welds used to join the lengths of strip prior to forming the hollow section, except that for helically 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 galvanization:
The products are suitbale for hot dip galvanization.
TABLE 1 Tolerances
| Symbol | Unit | Definition |
| B | mm | Nominal length of side of square hollow section.Nominal length of the shorter side of a rectangular hollow section |
| C1/C2 | mm | Length of corner region of a square or rectangular hollow section |
| Dmax/Dmin | mm | The maximum and minimum outside diameter of a circular hollow section measured in the same plane |
| H | mm | Nominal length of the longer side of a rectangular hollow section |
| M | Kg/m | Mass per unit length |
| T | mm | Nominal thickness |
| O | % | Out-of-roundness |
| T | mm | Nominal thickness |
| V | mm | Total measured twist |
TABLE 2 Tolerances
| Characteristic | Circular hollow sections | Square and rectangular hollow sections | |
| Outside dimensions (D,B andH) | ±1% with a minimum of ±0.5mm and a maximum of ±10mm | Side 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 100① | —— | |
| Concavity/convexity② | —— | 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 | |
| Straightness | 0.20% of total length | 0.15% of total length | |
| Mass(M) | ±6% on individual lengths | ||
①Where the diameter to thickness ratio exceeds 100 the tolerance on out-of-roundness shall be agreed.
②The tolerance on convexity and concavity is independent of the tolerance on outside dimensions.
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 |
The sides need not be tangential to the corner arcs.
TABLE 4 Tolerances on length①
| Type of length | Range in mm | Tolerance |
| Random length | 4000 to 16000 with a range of 2000 per order item | 10% 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 | ≥4000 | ﹢50mm 0 |
| Exact length | ＜6000 ≥6000 to ≤10000 ＞10000 | ﹢5mm 0 ﹢15mm 0 ﹢5mm +1mm/m 0 |
①The purchaser shall indicate in the enquiry and order the type of length required and the length range or length required.
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 |
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 seam of submerged arc-welded steel tubes for the detection of longitudinal and/or transverse imperfections
EN10246-10, Non-destructive 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, Quality management systems - 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 specification - Part 1: Arc welding (ISO 15609-1:2004)
EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1: 2004)
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
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