DOM Round Steel Tube 1020 Low Carbon Steel Welded Pipe For Mechanical Equipment

Material

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.

Specifications

• 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

Chemical Composition

The table below compares key alloying limits for five common low-carbon steel grades used in DOM and precision tubing:

Mechanical Properties

Mechanical properties of cold-drawn tubing for these grades are shown below:

Key Features

• 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.

Execution Standards

• 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

Application Fields

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

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

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.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

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.