TORICH INTERNATIONAL LIMITED
| Application | Automotive |
| Outer diameter | 20-426mm |
| Thickness | 0.4 - 100 mm |
| Length | 1-12m,5.8-12m,1-12m/as customers' requests, |
| Grade | STKM11A E155 E190 E195 1010 |
| Technique | ERW,Hot Rolled,Cold Rolled,Cold Drawn,Extruded |
| Surface treatment | Galvanized,oil,Satin or Mirror,painted,Coating |
| Section shape | Round,Square,Rectangular,Round/Square/Rectangular/Oval.etc,according to customer |
| 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. |
| Brand Name | TORICH |
| Model Number | ERW Carbon Steel Welded Pipe |
| Certification | ISO9001 ISO 14001 TS16949 |
| Place of Origin | Zhejiang/China |
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Product Specification
| Application | Automotive | Outer diameter | 20-426mm |
| Thickness | 0.4 - 100 mm | Length | 1-12m,5.8-12m,1-12m/as customers' requests, |
| Grade | STKM11A E155 E190 E195 1010 | Technique | ERW,Hot Rolled,Cold Rolled,Cold Drawn,Extruded |
| Surface treatment | Galvanized,oil,Satin or Mirror,painted,Coating | Section shape | Round,Square,Rectangular,Round/Square/Rectangular/Oval.etc,according to customer |
| 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. |
| Brand Name | TORICH | Model Number | ERW Carbon Steel Welded Pipe |
| Certification | ISO9001 ISO 14001 TS16949 | Place of Origin | Zhejiang/China |
| High Light | 20-426mm Outer Diameter ERW Carbon Steel Pipe ，0.4-100mm Thickness Precision Steel Tube ，1-12m Length Welded Steel Tube | ||
Electric-Resistance Welded (ERW) low-carbon steel tubing manufactured to JIS G3445 STKM11A and supplied as precision, cold-sized round tubes for automotive and machinery applications. Typical forming includes bending, flaring, flanging and flattening with consistent surface and weld integrity per precision-tube standards.
Process: ERW (high-frequency), cold sizing; optional annealed (+A) or normalized (+N) after sizing.
Supply conditions: +CR1 / +CR2 (as-welded & cold-sized), +A (soft annealed), +N (normalized) to match downstream forming needs.
Standards typically matched: JIS G3445 (STKM series), EN 10305-3 (E-grades), ASTM A513 (Types 1/2 mechanical tubing), GB/T 13793 (ERW steel pipe).
Automotive-grade precision: Tight OD/WT tolerances and specified maximum surface roughness per EN 10305-3 for precision tubes.
Formability & weldability: Low carbon (C ≤0.12%) and Mn ≤0.60% promote easy bending and flaring with stable weldability.
Consistent weld seam quality: Flash-in/flash-out control available; internal flash controlled to ≤0.005 in (≈0.13 mm) when specified.
Verified straightness: Meets typical ASTM A513 straightness criteria 1/32 in per 3 ft (~0.8 mm/m); tighter options available by agreement.
Optional heat treatment windows: +A for maximum ductility; +N for balanced strength/ductility; +CR1/+CR2 when higher as-welded strength is desired.
| Grade / Standard | C | Si | Mn | P | S | Al (min) |
|---|---|---|---|---|---|---|
| STKM11A (JIS G3445) | ≤0.12 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 | — |
| E155 (EN 10305-3) | ≤0.11 | ≤0.35 | ≤0.70 | ≤0.025 | ≤0.025 | ≥0.015 |
| E190 (EN 10305-3) | ≤0.10 | ≤0.35 | ≤0.70 | ≤0.025 | ≤0.025 | ≥0.015 |
| E195 (EN 10305-3) | ≤0.15 | ≤0.35 | ≤0.70 | ≤0.025 | ≤0.025 | — |
| 1010 (ASTM A513 ref.) | 0.08–0.13 | — | 0.30–0.60 | ≤0.035 | ≤0.035 | — |
| Grade | Condition | Yield (MPa) | Tensile (MPa) | Elongation (%) |
|---|---|---|---|---|
| STKM11A (JIS) | As specified for tubes | — | ≥290 | ≥35 (L); ≥30 (T) |
| E155 (EN 10305-3) | +N | ≥155 (ReH) | 270–410 | ≥28 |
| E190 (EN 10305-3) | +CR2 | ≥190 (ReH) | ≥270 | ≥26 |
| E195 (EN 10305-3) | +N (typical) | ≥195 (ReH) | ~320–510 | ≥28 (typical) |
| STKM12A (JIS) | Tubes | ≥175 | ≥340 | ≥35 (L); ≥30 (T) |
JIS: JIS G3445 (STKM11A/12A/12C) carbon steel tubes for machine structure.
EN: EN 10305-3 (E155/E190/E195) welded, cold-sized precision tubes; precision tolerances and surface roughness defined; typical field—automotive.
ASTM/ASME: ASTM/ASME A513 (Types 1 & 2) ERW carbon steel mechanical tubing with specific OD/WT/straightness tolerances; flash control options.
GB (China): GB/T 13793 ERW steel pipe (general); precision applications often align with EN 10305-3 requirements on request.
GOST (Russia): GOST 10705/10704 welded steel pipes (general-purpose baselines) used for referencing dimensional tolerances in CIS markets.
General: Automotive, machinery, furniture, appliances, bicycles, and general engineering precision tubing.
Automotive examples (where it is used within the system):
Chassis & body: seat structures, cross-members, crash-bracing.
Steering & suspension: steering columns/shafts, shock absorber shells, stabilizer bar sleeves.
Powertrain & fuel: fuel rails, EV battery pack frames, coolant lines (with post-coating).
Interior mechanisms: slider rails, hinge arms.
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
Company Overview A Professional Steel Tube Manufacturer and Solution Provider TORICH INTERNATIONAL LIMITED integrates steel tube manufacturing, international trade, warehousing, technical support and customized processing. Our manufacturing operations cover cold drawing, cold rolling, heat treat... Company Overview A Professional Steel Tube Manufacturer and Solution Provider TORICH INTERNATIONAL LIMITED integrates steel tube manufacturing, international trade, warehousing, technical support and customized processing. Our manufacturing operations cover cold drawing, cold rolling, heat treat...
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