EN 10305-2 Cold Drawn Welded Steel Tube (DOM Tubing)
Precision-Formed, High-Strength Tubing for Mechanical & Hydraulic Applications
Model: CX-ERW10305 HS Code: 730630 Brand: CHENGXIN
Minimum Order: 1 ton per size
Product Overview
EN 10305-2 Cold Drawn Welded Steel Tube, also known as DOM (Drawn Over Mandrel) Tubing, is a type of precision welded tube widely used in automotive, machinery, hydraulic, and structural applications. The cold drawing process enhances the tube’s mechanical properties, surface finish, concentricity, and dimensional tolerances. CHENGXIN’s cold drawn ERW steel tubes offer superior strength, uniform wall thickness, and a clean inner and outer surface—making them ideal for critical applications where accuracy and reliability matter.
Product Details
Product Type
Cold Drawn Welded Steel Tube / DOM Tubing
Standard: EN 10305-2
Size Range
Outer Diameter: 70mm to 325mm
Wall Thickness: 2mm to 15mm
Applicable Standards & Grades
Standard: EN 10305-2 Steel Grade: E195, E235, E355
Standard: ASTM A512 Steel Grade: MT1010, MT1020
Standard: DIN 2393-2 Steel Grade: ST37.2, ST44.2, ST52.3
Other steel grades available upon request
Manufacturing Method
Hydraulic cold drawing over mandrel, producing excellent surface finish, concentricity, and tensile strength
Delivery Conditions
BK: As drawn BKW: Light cold worked BKS: Stress relieved GBK: Annealed NBK: Normalized
End Finish
Plain cut, square ends, deburred
Optional: chamfered or beveled ends
Marking & Packing
Marking: As per customer request (e.g., heat number, grade, size)
Packing: Bundles tied with steel straps, anti-rust oil coating (internal & external), external protection with PVC & knitted bags, customized export packaging available
Key Advantages
✅ Superior dimensional accuracy due to cold drawing over mandrel
✅ High tensile strength and smooth inner surface
✅ Better concentricity than standard welded tubing
✅ Ideal for hydraulic cylinders, telescopic booms, shock absorbers, and automotive frames
✅ Consistent quality from a certified welded steel tube manufacturer
Applications
Hydraulic cylinder tubes
Telescopic cylinder sleeves
Shock absorber components
Agricultural machinery
Automotive structural tubes
Fitness equipment frames
General mechanical & industrial tubing
FAQ
Q1: What’s the difference between DOM tubing and standard welded tubing?
A: DOM (Drawn Over Mandrel) tubing is a cold drawn welded tube with improved dimensional accuracy, strength, and surface quality compared to standard welded tubes.
Q2: What is the minimum order quantity?
A: 1 ton per size for regular specifications.
Q3: What’s your typical lead time?
A: 20–35 days depending on steel grade, size, and order volume.
Q4: Do you offer quality certifications?
A: Yes. All our welded tubes comply with EN 10305-2, and we can provide mill test certificates, third-party inspection reports, and ISO 9001:2015 documents upon request.
Q5: Can I request custom markings or packaging?
A: Absolutely. We support OEM markings, logo printing, barcodes, and palletized or box packing per your logistics needs.
Quality Assurance
Raw material sourcing: High-quality coils and HRS from certified steel mills
In-house cold drawing technology: Advanced hydraulic drawing benches
Inspection process: Dimensional tests, visual and surface checks, pressure and flattening tests, eddy current or ultrasonic testing for critical orders
We ensure each batch of cold drawn welded steel tube meets international and client-specific standards
About CHENGXIN
As a professional welded steel tube manufacturer in China, CHENGXIN specializes in high-precision tubing solutions for global industrial clients. With a production base covering 32,000㎡ and complete manufacturing lines from pickling to cold drawing, heat treatment, straightening, and final inspection, we supply over 30,000 tons of steel tubes annually to OEMs and distributors worldwide.
