Place of Origin:
Zhejiang/China
اسم العلامة التجارية:
TORICH
إصدار الشهادات:
ISO9001 ISO 14001 TS16949
Model Number:
ASTM A519 T5
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Drawn Over Mandrel (DOM) round steel tubing is produced from an electric-resistance-welded (ERW) tube that is cold drawn through dies and over a mandrel to remove weld flash, achieving precise outside and inside diameters, superior surface finish, and enhanced mechanical properties. This product is manufactured from low-carbon AISI 1020 steel, noted for its excellent weldability, formability, and machinability.
ASTM Compliance: ASTM A513 Type 5 (DOM mechanical tubing)
Outer Diameter: 0.1875" – 5" (4.8 – 127 mm)
Wall Thickness: 0.028" – 0.625" (0.7 – 15.9 mm)
Tolerances (OD): per ASTM A513 Type 5 (e.g., +0.005"/0.000 for 0.500"–1.699" OD)
Length: Standard 6 m (20 ft); custom lengths available on request
The table below compares key alloying limits for five common low-carbon steel grades used in DOM and precision tubing:
| Grade | C (%) | Mn (%) | P (max %) | S (max %) |
|---|---|---|---|---|
| AISI 1008 (G10080) | 0.08 – 0.10 | 0.30 – 0.50 | 0.040 | 0.050 |
| AISI 1010 (G10100) | 0.080 – 0.13 | 0.30 – 0.60 | 0.040 | 0.050 |
| AISI 1015 (G10150) | 0.13 – 0.18 | 0.30 – 0.60 | 0.040 | 0.050 |
| AISI 1018 (G10180) | 0.15 – 0.20 | 0.60 – 0.90 | 0.040 | 0.050 |
| AISI 1020 (G10200) | 0.18 – 0.23 | 0.30 – 0.60 | 0.040 | 0.050 |
Mechanical properties of cold-drawn tubing for these grades are shown 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 |
Precise Dimensional Control: Achieves close OD/ID tolerances via cold drawing over mandrel.
Superior Surface Finish: Weld flash removed; smooth inner and outer surfaces.
Enhanced Strength: Cold work increases yield and tensile strengths over standard ERW tubing.
Excellent Machinability: Low-carbon AISI 1020 base offers good machining and weldability.
Cost-Effective: Manufactured from widely available low-carbon alloy with efficient ERW and cold-drawn processes.
ASTM A513 Type 5: Electric-resistance-welded, cold-drawn mechanical tubing
EN: DIN EN 10250-2 C22E (1.1151) cold-drawn carbon steel round tubes
GOST: GOST 10704-91 electric-resistance-welded steel tubes
JIS: JIS G3445 STKM 13B carbon steel mechanical structural tubes
GB: GB/T 31315-2014 cold drawn or cold rolled precision weld steel tubes for mechanical structures
Mechanical Equipment—widely used where high strength, accuracy, and surface finish are critical:
Hydraulic Systems: Cylinder barrels, piston rods
Automotive Industry: Axles, gears, bushings, steering components
Industrial Machinery: Shafts, spindles, couplings, structural supports
Agricultural Machinery: Drive shafts, rollers, frame elements
Furniture & Construction: Support tubes, frame members requiring precise fit
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.
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