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,Hydraulic Pipe,Construction,Fluid Pipe,Oil Pipe |
| Outer diameter(round) | 30 - 425 mm, |
| Thickness | 2 - 100 mm,0 |
| Standard | ASTM,DIN,GB,JIS,API |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Grade | 1008 1010 1015 1018 1020 |
| Special pipe | Thick Wall Pipe,API Pipe,Precision steel tube, |
| Length | 6M or as requirement |
| Brand Name | TORICH |
| Model Number | Dom Round 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,Hydraulic Pipe,Construction,Fluid Pipe,Oil Pipe | Outer diameter(round) | 30 - 425 mm, |
| Thickness | 2 - 100 mm,0 | Standard | ASTM,DIN,GB,JIS,API |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn | Grade | 1008 1010 1015 1018 1020 |
| Special pipe | Thick Wall Pipe,API Pipe,Precision steel tube, | Length | 6M or as requirement |
| Brand Name | TORICH | Model Number | Dom Round Tubing |
| Certification | ISO9001 ISO 14001 TS16949 | Place of Origin | Zhejiang/China |
| High Light | DOM carbon steel tube for machinery ，precision DOM steel tube 30-425mm ，carbon steel tube with warranty | ||
Dom Round Tubing—commonly referred to as DOM (Drawn Over Mandrel)—is produced from electric-resistance-welded (ERW) steel (typically AISI 1020, 1026, or equivalent). It undergoes cold drawing over a mandrel to remove weld flash, enhancing dimensional accuracy, concentricity, strength, and surface quality. It is widely used in precision machinery due to these enhanced characteristics.
Standards: Conforms to ASTM A513 Type 5 (mechanical tubing), as well as international equivalents like EN DIN EN 10250‑2 (C22E), GOST 10704‑91, JIS G3445 STKM 13B, and GB/T 31315‑2014.
Typical Grades: AISI 1020 is most common; 1026 is used for larger ODs or thicker walls. Some sources also list ST52.3.
Size Range: OD from ~0.188″ to 12″ (4.8 mm–127 mm); wall thickness from 0.028″ to 0.625″ (0.7 mm–15.9 mm).
Here's a table comparing chemical composition among five common low‑carbon steel grades used in DOM/precision tubing:
| Grade | C (%) | Mn (%) | P (max %) | S (max %) |
|---|---|---|---|---|
| AISI 1008 | 0.08–0.10 | 0.30–0.50 | 0.040 | 0.050 |
| AISI 1010 | 0.08–0.13 | 0.30–0.60 | 0.040 | 0.050 |
| AISI 1015 | 0.13–0.18 | 0.30–0.60 | 0.040 | 0.050 |
| AISI 1018 | 0.15–0.20 | 0.60–0.90 | 0.040 | 0.050 |
| AISI 1020 | 0.18–0.23 | 0.30–0.60 | 0.040 | 0.050 |
Mechanical properties for the same five grades are outlined below:
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| AISI 1008 | ~340 | ~285 | ~20 | ~95 |
| AISI 1010 | ~365 | ~305 | ~20 | ~105 |
| AISI 1015 | ~385 | ~325 | ~18 | ~111 |
| AISI 1018 | ~440 | ~370 | ~15 | ~126 |
| AISI 1020 | ~420 | ~350 | ~15 | ~121 |
Tight Dimensional Tolerances: Cold drawing yields excellent OD/ID accuracy and concentricity
Surface Finish: Smooth, flash-free internal and external surfaces
Enhanced Mechanical Performance: Improved tensile/yield strength from cold worked processing; still offers great machinability and weldability, especially in 1020
Cost-Efficient: Offers high performance at lower cost relative to seamless options
EN: DIN EN 10250‑2 (C22E)
GOST: GOST 10704‑91
JIS: JIS G3445 STKM 13B
GB: GB/T 31315‑2014 (cold‑drawn/rolled precision welded tubes)
DOM tubing is favored in precision-sensitive mechanical applications. Typical usage includes:
Hydraulic Systems: Cylinder barrels, piston rods
Automotive: Axles, gears, bushings, steering components
Industrial Machinery: Shafts, spindles, couplings, structural supports
Agricultural Equipment: Drive shafts, rollers, frame members
Consumer & Construction: Furniture frames, accurate support members
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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