TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products |
| Packaging Details | In bundles or in wooden boxes. |
| Application | Industry |
| Standard | ASTM,DIN,GB,JIS,API |
| Outer diameter(round) | 30 - 325 mm |
| Thickness | 2 - 100 mm |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Surface treatment | Galvanized,customerized,Copper Coated,Null,polished |
| Grade | S235JR S235J0 S235J2 S275JR S355JR |
| Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Brand Name | TORICH |
| Model Number | S235JR |
| Certification | ISO9001 ISO 14001 TS16949 |
| Place of Origin | Zhejiang/China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products | Packaging Details | In bundles or in wooden boxes. |
| Application | Industry | Standard | ASTM,DIN,GB,JIS,API |
| Outer diameter(round) | 30 - 325 mm | Thickness | 2 - 100 mm |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn | Surface treatment | Galvanized,customerized,Copper Coated,Null,polished |
| Grade | S235JR S235J0 S235J2 S275JR S355JR | Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Brand Name | TORICH | Model Number | S235JR |
| Certification | ISO9001 ISO 14001 TS16949 | Place of Origin | Zhejiang/China |
| High Light | S235JR Square Tube ，Cold Formed Square Hollow Section ，Industrial Use Square Tube | ||
S235JR is a non-alloy structural (mild) carbon steel grade used for general-purpose load-bearing fabrication. In cold-formed square hollow sections (SHS), steel strip/plate is roll-formed at ambient temperature, welded (typically high-frequency), and then sized to achieve stable geometry and consistent dimensions.
Note on designation: for European hollow sections, the grade is often specified as S235JRH under EN 10219 (the “H” suffix indicates hollow section). Cold-formed SHS produced to EN 10219 is a common way to purchase “S235JR square tube” for structural/industrial frames.
Shape: Square Hollow Section (SHS) / Square Tube
Manufacturing: Cold formed + welded + sizing
Typical OD range (customizable): 20×20 mm up to 400×400 mm
Typical wall thickness (customizable): 1.5–16.0 mm (heavier walls available by agreement)
Length options: 6 m / 12 m / cut-to-length
Ends: Plain, deburred, or beveled (upon request)
Surface options: Black (mill finish), oiled, shot-blasted, zinc-coated / hot-dip galvanized (upon request)
Reliable strength-to-weight ratio for frames, racks, supports, and welded assemblies
Excellent weldability and workshop fabrication performance (cutting, drilling, punching)
Clean appearance and stable geometry after sizing—ideal for exposed structures and modular fabrication
Closed-section stiffness improves torsional rigidity versus open sections
Q1: “Which standard should I specify—EN 10219 or EN 10210?”
We help you choose correctly: EN 10219 = cold-formed, EN 10210 = hot-finished. Cold-formed tubes are typically selected for cost efficiency and precise geometry; hot-finished is often chosen when hot-finish performance is required by design.
Q2: “Can you control dimensional tolerances and corner quality?”
We control OD, wall thickness-on-flats, straightness, and corner consistency per the requested standard (e.g., EN 10219-2 tolerances). For projects referencing US-style tolerance practices, we also follow recognized measurement methods (e.g., avoid weld-seam area for thickness checks; corner radius limits for square/rectangular tubing).
Q3: “Do you provide full traceability and inspection documents?”
Each bundle can be traceable by heat number, and we provide inspection documents (MTC) so buyers can verify grade/standard, heat/lot, and test results.
Q4: “Is weld seam quality reliable for fabrication?”
We focus on stable forming + welding parameters and post-weld sizing to ensure consistent seam integrity and smooth fabrication performance (especially important for load-bearing frames and repetitive production).
Q5: “Can you support processing and delivery requirements?”
Cut-to-length, end finishing, bundling/labeling, protective packing, and export documentation are available to reduce your receiving and fabrication time.
| Grade | Reference Standard (typ.) | C (max) | Si (max) | Mn (max) | P (max) | S (max) | N (max) | Cu (max) |
|---|---|---|---|---|---|---|---|---|
| S235JR | EN 10025-2 | 0.17 | — | 1.40 | 0.035 | 0.035 | 0.012* | 0.40 |
| S235J0 | EN 10025-2 | 0.17 | — | 1.40 | 0.030 | 0.030 | 0.012 | 0.40 |
| S235J2 | EN 10025-2 | 0.17 | — | 1.40 | 0.025 | 0.025 | — | 0.40 |
| S275JR | EN 10025-2 | 0.21 | — | 1.50 | 0.035 | 0.035 | 0.012 | 0.40 |
| S355JR | EN 10025-2 | 0.24 | 0.55 | 1.60 | 0.035 | 0.035 | 0.012 | 0.55 |
| Grade | Yield Strength ReH (min, MPa) | Tensile Strength Rm (MPa) | Elongation A (min, %) | Impact Requirement (typ.) |
|---|---|---|---|---|
| S235JR | 235 | 360–510 | 26 | 27 J @ +20°C |
| S235J0 | 235 | 360–510 | 26 | 27 J @ 0°C |
| S235J2 | 235 | 360–510 | 26 | 27 J @ −20°C |
| S275JR | 275 | 410–560 | 23 | 27 J @ +20°C |
| S355JR | 355 | 470–630 | 22 | 27 J @ +20°C |
EN (Europe)
EN 10219-1: Cold formed welded structural hollow sections — technical delivery conditions
EN 10219-2: Tolerances, dimensions and sectional properties
EN 10025-2: Non-alloy structural steels (basis for S235/S275/S355 grade definitions)
EN 10204: Inspection documents (MTC types such as 3.1/3.2) (commonly requested)
ASTM (USA)
ASTM A500/A500M: Cold-formed welded and seamless carbon steel structural tubing in rounds and shapes (square/rectangular included)
JIS (Japan)
JIS G 3466: Carbon steel square and rectangular tubes for general structure
GB (China)
GB/T 6728: Cold forming sectional steel for general structure (square/rectangular hollow sections included)
GOST (Russia/EAEU)
GOST 30245: Steel bent closed welded square and rectangular sections for building structures
Main industries: steel structures, industrial equipment, fabrication workshops, logistics & storage, infrastructure supports, energy and utility frames.
Typical uses inside these industries
Structural framing: columns, beams, trusses, bracing members
Industrial equipment: machine bases, guards, platforms, conveyors
Racking & logistics: pallet racks, mezzanines, shelving frames
Vehicles & transport: trailer frames, subframes, reinforcements
Energy & utilities: support frames, skids, mounting structures
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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
A Professional Steel Pipes Materials Inventor, Manufacturer And Solution Provider TORICH INTERNATIONAL LIMITED is a professional inventor, manufacturer, and solution provider of steel pipe materials, integrating production and international trade, specializing in various precision steel pipes. Esta... A Professional Steel Pipes Materials Inventor, Manufacturer And Solution Provider TORICH INTERNATIONAL LIMITED is a professional inventor, manufacturer, and solution provider of steel pipe materials, integrating production and international trade, specializing in various precision steel pipes. Esta...
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