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DOM Steel Tube 30-325mm OD for Mechanical Applications

    Buy cheap DOM Steel Tube 30-325mm OD for Mechanical Applications from wholesalers
     
    Buy cheap DOM Steel Tube 30-325mm OD for Mechanical Applications from wholesalers
    • Buy cheap DOM Steel Tube 30-325mm OD for Mechanical Applications from wholesalers
    • Buy cheap DOM Steel Tube 30-325mm OD for Mechanical Applications from wholesalers
    • Buy cheap DOM Steel Tube 30-325mm OD for Mechanical Applications from wholesalers
    • Buy cheap DOM Steel Tube 30-325mm OD for Mechanical Applications from wholesalers
    • Buy cheap DOM Steel Tube 30-325mm OD for Mechanical Applications from wholesalers

    DOM Steel Tube 30-325mm OD for Mechanical Applications

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    Brand Name : TORICH
    Model Number : DOM Steel Tube
    Certification : API,CE,ISO,ISO9001-2008,ISO9001
    Price : 800-1200USD/Ton
    Payment Terms : L/C,D/A,D/P,T/T,Western Union,MoneyGram
    Supply Ability : 60000 Ton/Tons per Year
    Delivery Time : 20-30days upon products
    • Product Details
    • Company Profile

    DOM Steel Tube 30-325mm OD for Mechanical Applications

    T5 DOM Steel Tube Drawn Over Mandrel Low Carbon Steel Welded Pipe For Mechanical

    This product is a Drawn-Over-Mandrel (DOM) steel tube manufactured from low-carbon welded pipe, designed for demanding mechanical applications requiring high precision, uniform mechanical properties, and excellent surface finish. It is 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. Typical sizes range from very small ODs for precision hydraulic components up to large ODs suitable for structural shafts, with wall thicknesses optimized for strength-to-weight performance. Below is a detailed breakdown of its material characteristics, specifications, chemical and mechanical properties, main features, applicable standards, and application areas.

    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

    The chemical composition limits for five representative low-carbon DOM grades under ASTM A519 are shown below:

    GradeC (wt %)Mn (wt %)P (max wt %)S (max wt %)
    10180.15–0.200.60–0.900.0400.050
    10200.18–0.230.30–0.600.0400.050
    10220.18–0.230.70–1.000.0400.050
    10260.22–0.280.60–0.900.0400.050
    10300.28–0.340.60–0.900.0400.050

    Mechanical Performance

    Typical mechanical properties for these five grades in the drawn-over-mandrel condition are:

    GradeTensile Strength (MPa)Yield Strength (MPa)Elongation (%)
    101844037015
    102042035015
    102238020525
    102649041515
    103052544012

    Main 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

    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




    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.



    Product Tags:

    DOM steel tube cold drawn

      

    DOM steel tube mechanical applications

      

    DOM steel tube 30-325mm OD

      
    Quality DOM Steel Tube 30-325mm OD for Mechanical Applications for sale

    DOM Steel Tube 30-325mm OD for Mechanical Applications

    Company Info.
    TORICH INTERNATIONAL LIMITED
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