Name: DOM Steel Tube 30-325mm OD Cold Drawn for Mechanical Applications
Brand: TORICH INTERNATIONAL LIMITED
SKU: DOM Steel Tube
Price: 1,000.00 USD
Availability: InStock

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DOM Steel Tube 30-325mm OD Cold Drawn for Mechanical Applications

DOM steel tube cold drawn

DOM steel tube mechanical applications

DOM steel tube 30-325mm OD

Place of Origin:

ISO9001 ISO 14001 TS16949

Brand Name:

TORICH

Certification:

ISO9001 ISO 14001 TS16949

Model Number:

DOM Steel Tube

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Product Details

Application:

Mechanical

Outer Diameter(round):

30 - 325 Mm

Thickness:

2 - 50 Mm

Standard:

ASTM,DIN,GB,JIS,API

Certification:

API,CE,ISO,ISO9001-2008,ISO9001

Technique:

Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn

Length:

6M Or As Requirement,As Customer's Require,8m,5.8m,2.5-8m

Grade:

1018 1020 1022 1026 1030

Highlight:

DOM steel tube cold drawn

DOM steel tube mechanical applications

DOM steel tube 30-325mm OD

Payment & Shipping Terms

Minimum Order Quantity

1Ton

Price

800-1200USD/Ton

Packaging Details

In bundles or in wooden boxes.

Delivery Time

20-30days upon products

Payment Terms

L/C,D/A,D/P,T/T,Western Union,MoneyGram

Supply Ability

60000 Ton/Tons per Year

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Product Description

DOM Steel Tube Drawn Over Mandrel Low Carbon Steel Welded Pipe For Mechanical

Product Specifications

Attribute	Value
Application	Mechanical
Outer diameter (round)	30 - 325 mm
Thickness	2 - 50 mm
Standard	ASTM, DIN, GB, JIS, API
Certification	API, CE, ISO, ISO9001-2008, ISO9001
Technique	Cold Drawn, Hot Rolled, Cold Rolled, ERW, Hot Rolled/Cold Drawn
Length	6M or as requirement, As customer's require, 8m, 5.8m, 2.5-8m
Grade	1018, 1020, 1022, 1026, 1030

Product Overview

This Drawn-Over-Mandrel (DOM) steel tube is manufactured from low-carbon welded pipe, designed for demanding mechanical applications requiring high precision, uniform mechanical properties, and excellent surface finish. Cold-drawn over a mandrel to achieve tight tolerances on outside diameter (OD), inside diameter (ID), and wall thickness, resulting in smooth, oxide-free surfaces and superior concentricity.

Material

T5 DOM steel tubing is produced from low-carbon electric-resistance-welded (ERW) "mother tubes" that are cold-drawn over a mandrel to improve dimensional accuracy and surface quality. The base material is typically ASTM A513 Grade 1020 or 1026, selected for its balance of weldability, machinability, and strength.

Specifications

Size range (stocked): 3/16″ to 14″ OD; wall thickness from 0.028″ to 0.625″
Length: Supplied in random lengths of 17′-24′, with cut-to-length service available
Manufacturing process: Electric-resistance-welded → cold-drawn over mandrel (DOM)
Grades: Primarily 1020 (OD ≤2″ / wall ≤0.156″) and 1026 (larger or heavier wall)

Chemical Composition

Grade	C (wt %)	Mn (wt %)	P (max wt %)	S (max wt %)
1018	0.15-0.20	0.60-0.90	0.040	0.050
1020	0.18-0.23	0.30-0.60	0.040	0.050
1022	0.18-0.23	0.70-1.00	0.040	0.050
1026	0.22-0.28	0.60-0.90	0.040	0.050
1030	0.28-0.34	0.60-0.90	0.040	0.050

Mechanical Performance

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
1018	440	370	15
1020	420	350	15
1022	380	205	25
1026	490	415	15
1030	525	440	12

Key Features

Tight tolerances: Close OD/ID and wall thickness control for precision components
Superior surface finish: Smooth, scale-free surfaces ideal for hydraulic and rotating parts
Uniform mechanical properties: Cold drawing refines grain structure and increases strength
Excellent machinability: Minimal stock allowance required for secondary machining
High fatigue resistance: Suitable for cyclic loading in automotive and industrial machinery

Compliance Standards

ASTM A513 Type 5 (DOM mechanical tubing)
ASTM A519 (cold-finished seamless mechanical tubing)
EN 10305-3 (cold-drawn precision steel tubes)
GOST 8734 (cold-drawn welded steel tubes)
JIS G3446 (cold-drawn steel tubes)
GB/T 3639 (cold-drawn carbon steel precision tubes)

Application Fields

General Sectors

Automotive: Shafts, axles, suspension components
Hydraulics: Cylinder barrels, pistons, bushings
Industrial Machinery: Gears, bearings, spindles
Construction: Structural shafts, linkages

Specific Uses

Hydraulic cylinders: Smooth bore for sealing and rod guidance
Automotive steering: High concentricity reduces vibration
Machine spindles: Enhanced fatigue life under cyclic loads
Precision shafts: Tight tolerances ensure accurate alignment

Product Images

Frequently Asked Questions

Are you a trading company or manufacturer?

We are a manufacturer, but we can also handle trading operations.

How long is your delivery time?

Generally, it takes 10-15 days if the goods are in stock, or 30-40 days if not in stock, depending on the order quantity.

Do you provide samples? Is it free or extra?

Yes, we can provide samples free of charge, but the customer needs to pay for the freight cost.

What are your payment terms?

For payments ≤2000USD: 100% in advance. For payments ≥2000USD: 30% T/T in advance, balance before shipment. Please contact us for any other questions.

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DOM Steel Tube 30-325mm OD Cold Drawn for Mechanical Applications

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