TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products |
| Packaging Details | In bundles or in wooden boxes. |
| Application | Structure Pipe, |
| Outer diameter(round) | 30 - 325 mm |
| Thickness | 2 - 50 mm, |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Section shape | Round,Rectangular |
| Special pipe | Thick Wall Pipe,API Pipe,Precision steel tube,precision seamless pipe,cold drawn |
| Grade group | 10#-45#,ST35-ST52,16Mn,A53-A369,Q195-Q345 |
| Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Brand Name | Torich |
| Model Number | Cold Formed Welded Carbon Steel Structural Square Tubing |
| 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 | Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products | Packaging Details | In bundles or in wooden boxes. |
| Application | Structure Pipe, | Outer diameter(round) | 30 - 325 mm |
| Thickness | 2 - 50 mm, | Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Section shape | Round,Rectangular | Special pipe | Thick Wall Pipe,API Pipe,Precision steel tube,precision seamless pipe,cold drawn |
| Grade group | 10#-45#,ST35-ST52,16Mn,A53-A369,Q195-Q345 | Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Brand Name | Torich | Model Number | Cold Formed Welded Carbon Steel Structural Square Tubing |
| Certification | ISO9001 ISO 14001 TS16949 | Place of Origin | Zhejiang/China |
| High Light | ASTM A500 Grade C Structural Square Tubing ，Cold Formed Welded Carbon Steel Tubing ，50 ksi Yield Strength HSS Tubing | ||
ASTM A500 Grade C is a cold-formed, electric-resistance-welded (ERW) carbon steel structural hollow section (HSS) in a square profile, designed for welded, riveted, or bolted construction (e.g., bridges, buildings, and general structural fabrication).
Product form: Square structural tubing (HSS)
Manufacturing: ERW from flat-rolled steel; welded across thickness. (Inside flash is normally not removed unless specified.)
Standard size envelope (per ASTM A500): Periphery ≤ 88 in [2235 mm]; specified wall thickness ≤ 0.875 in [22 mm]
Lengths: Typically produced in random lengths 5 ft [1.5 m] and over, in multiple lengths, and in specific lengths
Key dimensional tolerances (square/rectangular):
Wall thickness: –10% / +10% (center of flats; excluding weld seam for max)
Squareness of sides: 90° with ±2° max variation
Outside corner radius: ≤ 3 × wall thickness (3t)
Straightness: 1/8 in × (total feet ÷ 5)
Specific length tolerance: +1/2 in / –1/4 in (≤22 ft); +3/4 in / –1/4 in (>22 ft)
High strength for structural design: Grade C shaped tubing minimum Fy 50 ksi [345 MPa] and Fu 62 ksi [425 MPa]
Fabrication-friendly: Low-carbon chemistry and consistent HSS geometry support welding, cutting, drilling, and galvanizing/painting preparation (process-dependent).
Fit-up consistency: Standardized wall, corner radius, and squareness tolerances reduce rework during fabrication and erection.
“Will the tubing fit my jigs and connection details?”
We control the exact parameters that drive fit-up—wall tolerance (±10%), corner radius (≤3t), squareness (±2°), straightness, and length tolerances—so your gussets, baseplates, and splice details align with predictable HSS geometry.
“Can you provide compliance documents that pass QA/QC?”
When required on the PO, we supply Certificates of Compliance and Test Reports including heat analyses and tension test results per ASTM A500, and we mark each length (or bundle tag for ≤4 in) with manufacturer ID, spec designation, and grade.
“What about weld seam/flash—will it affect fabrication or coating?”
ASTM A500 ERW tubing is welded across thickness for structural design strength, and the outside weld seam must be free of protruding metal. Inside flash is normally not removed unless specified—so we can align supply with your needs (standard structural use vs. ID-sensitive applications).
| Specification / Grade | C max (Heat/Product) % | Mn max (Heat/Product) % | P max (Heat/Product) % | S max (Heat/Product) % | Cu min (Heat/Product) %* |
|---|---|---|---|---|---|
| ASTM A500 Grade A | 0.26 / 0.30 | 1.35 / 1.40 | 0.035 / 0.045 | 0.035 / 0.045 | 0.20 / 0.18 |
| ASTM A500 Grade B | 0.26 / 0.30 | 1.35 / 1.40 | 0.035 / 0.045 | 0.035 / 0.045 | 0.20 / 0.18 |
| ASTM A500 Grade C | 0.23 / 0.27 | 1.35 / 1.40 | 0.035 / 0.045 | 0.035 / 0.045 | 0.20 / 0.18 |
| ASTM A500 Grade D | 0.26 / 0.30 | 1.35 / 1.40 | 0.035 / 0.045 | 0.035 / 0.045 | 0.20 / 0.18 |
| ASTM A1085 (HSS) | 0.26 / 0.30 | 1.35 / 1.40 | 0.035 / 0.045 | 0.035 / 0.045 | — |
| Specification / Grade | Yield Strength | Tensile Strength | Elongation (2 in / 50 mm) |
|---|---|---|---|
| ASTM A500 Grade A | ≥ 39 ksi [270 MPa] | ≥ 45 ksi [310 MPa] | ≥ 25% |
| ASTM A500 Grade B | ≥ 46 ksi [315 MPa] | ≥ 58 ksi [400 MPa] | ≥ 23% |
| ASTM A500 Grade C | ≥ 50 ksi [345 MPa] | ≥ 62 ksi [425 MPa] | ≥ 21% |
| ASTM A500 Grade D | ≥ 36 ksi [250 MPa] | ≥ 58 ksi [400 MPa] | ≥ 23% |
| ASTM A1085 (HSS) | 50–70 ksi [345–485 MPa] | ≥ 65 ksi [450 MPa] | ≥ 21% |
ASTM: ASTM A500/A500M Grade C — cold-formed carbon steel structural tubing (HSS)
ASTM (premium option): ASTM A1085 — higher-performance HSS with defined impact requirement
EN: EN 10219-1/2 — cold formed welded structural hollow sections (technical delivery + tolerances/dimensions)
GOST: GOST 30245 — welded square/rectangular closed sections for structural/building use
JIS: JIS G 3466 — carbon steel square/rectangular tubes for general structure
GB: GB/T 6728 — cold forming sectional steel for general structure
Building & Civil Structures: columns, bracing members, trusses, lintels, handrail/guard frames
Industrial Fabrication: equipment frames, skids, conveyors, racks, mezzanine structures
Transportation: trailer frames, container frames, structural reinforcements
Energy & Utilities: solar racking, sign structures, cable/pipe supports
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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