Place of Origin:
Zhejiang/China
Brand Name:
TORICH
Certification:
ISO9001 ISO 14001 TS16949
Model Number:
DOM Roll Cage Tubing
Drawn Over Mandrel (DOM) tubing is produced by electric resistance welding of carbon-steel strip followed by cold drawing over a mandrel to remove weld flash and enhance mechanical properties. This process yields:
Uniform wall thickness and concentric OD/ID.
Improved yield and tensile strength compared to standard ERW tubes.
Smooth OD/ID surfaces, requiring minimal machining.
Property | Value |
---|---|
OD range | 3/16″ to 5″ (4.76 mm to 127 mm) |
Wall thickness | 0.028″ to 0.625″ (0.71 mm to 15.88 mm) |
Length | Random lengths 17′–24′ (5.18 m–7.32 m); cut-to-length available |
Tolerances | ±0.005″ for OD; ±0.003″ for wall thickness |
Surface finish | Pickled and oiled; optional honing for hydraulic applications |
Grade | C | Mn | P (max) | S (max) |
---|---|---|---|---|
SAE 1020 | 0.18–0.23 | 0.30–0.60 | 0.04 | 0.05 |
SAE 1026 | 0.22–0.28 | 0.60–0.90 | 0.015 | 0.005 |
SAE 520 | 0.17–0.23 | 0.30–0.60 | 0.04 | 0.05 |
EN-ST52.3 | ≤ 0.22 | ≤ 1.60 | ≤ 0.025 | ≤ 0.025 |
AISI 4130 | 0.28–0.33 | 0.40–0.60 | 0.035 | 0.040 |
Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
---|---|---|---|
SAE 1020 | 512 | 602 | 15 |
SAE 1026 | 517 | 586–690 | 15 |
SAE 520 | 512 | 602 | 15 |
EN-ST52.3 | ≥ 355 | 510–690 | ≥ 20 |
AISI 4130 | ≥ 482 | ≥ 586 | ≥ 20 |
High Strength-to-Weight Ratio: Superior yield and tensile properties for lightweight yet robust roll-cage structures.
Precision Dimensions: Tight tolerances reduce machining time and ensure consistent fitment.
Excellent Weldability: Low sulfur and phosphorus content facilitates gas- and arc-welding without pre- or post-heat in most grades.
Uniform Grain Structure: Cold drawing promotes refined microstructure and improved fatigue resistance.
Region | Standard | Scope |
---|---|---|
USA | ASTM A513 Type 5 | Cold-drawn ERW carbon-steel mechanical tubing |
USA | ASTM A500 | Cold-formed welded or seamless structural tubing |
EU | EN 10305-3 | Welded, cold-sized precision steel tubes |
Russia | GOST 8732 | Electric-welded steel tubes |
Japan | JIS G3445 | Welded steel precision tubes |
China | GB/T 3094 | Welded, cold-drawn precision steel tubes |
Roll Cages: Main chassis members, hoop assemblies, cross-bracing
Chassis Tubing: Frame rails, suspension links
Drive Shafts & Axle Tubes
Hydraulic Cylinders: Honing stock for rods and barrels
Pneumatic Systems: Cylinder bodies
Structural Supports: Frames and guard rails
Roll Cage A-Pillar Hoop: 1.75″ × 0.120″ DOM 1026 for FIA compliance
Main Hoop Backbone: 2.00″ × 0.120″ AISI 4130 for maximum strength
Honing Stock: EN-ST52.3 for hydraulic rams requiring honed ID
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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