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Cold Drawn Welded Pipe EN 10305-3

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Cold Drawn Welded Pipe EN 10305-3
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Cold Drawn Welded Pipe EN 10305-3

EN 10305-3 cold drawn welded precision steel tubes (grades E155, E190, E195, E220, E235) are produced from strip steel, welded and cold drawn for high dimensional accuracy, smooth finish, and reliable mechanical properties. They are widely used in automotive parts, hydraulic and pneumatic systems, machinery, furniture, and precision instruments.

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Description

EN 10305-3 E155 Cold Drawn Welded Pipe For precision applications

Material

EN 10305-3 specifies Cold Drawn Welded Pipe (CDW) precision steel tubes, manufactured from cold-rolled or hot-rolled strip steel, formed and subsequently welded. These tubes are further cold drawn to achieve precise dimensional accuracy, improved surface quality, and enhanced mechanical properties.

Specifications

  • Product: Cold Drawn Welded Precision Steel Tubes

  • Grades: E155, E190, E195, E220, E235

  • Manufacturing Process: Welded from strip → Cold drawn for precision finish

  • Shapes: Round, square, rectangular, and custom profiles

  • Surface Condition: Bright, clean, smooth (pickled, oiled, or phosphate coated upon request)

  • Delivery Condition: +C (cold drawn/hard), +LC (cold drawn/soft), +SR (stress relieved), +A (annealed), +N (normalized)

Chemical Composition (wt.%)

Grade C max Mn max P max S max Al min
E155 0.11 0.40 0.025 0.025 0.020
E190 0.12 0.50 0.025 0.025 0.020
E195 0.13 0.60 0.025 0.025 0.020
E220 0.17 0.65 0.025 0.025 0.020
E235 0.17 0.70 0.025 0.025 0.020

(Values based on EN 10305-3 standard tolerance ranges.)

Mechanical Properties

Grade Yield Strength ReH (MPa) Tensile Strength Rm (MPa) Elongation A% (L0=5.65√So)
E155 ≥ 155 290–430 ≥ 28
E190 ≥ 190 290–430 ≥ 28
E195 ≥ 195 320–500 ≥ 27
E220 ≥ 220 340–520 ≥ 25
E235 ≥ 235 340–520 ≥ 25

Key Features

  • High dimensional precision and tight tolerances

  • Smooth surface finish suitable for subsequent machining or coating

  • Excellent formability and weldability

  • Wide range of mechanical properties depending on delivery condition

  • Cost-effective compared to seamless precision tubes

Standards

  • European Standard (EN): EN 10305-3 (Welded cold drawn precision steel tubes)

  • DIN: DIN EN 10305-3 (formerly DIN 2394)

  • ASTM Equivalent: ASTM A513 Type 2 (Welded DOM tubing, cold drawn)

  • JIS Equivalent: JIS G3445 STKM11A/12A/13A (mechanical tubes)

  • GB Equivalent (China): GB/T 3639 (Cold drawn or cold rolled precision seamless steel tubes)

Applications

General Application Fields:

  • Automotive industry

  • Mechanical engineering

  • Hydraulic and pneumatic systems

  • Furniture and construction

  • Precision instruments

Detailed Uses by Sector:

  • Automotive: Steering columns, seat structures, shock absorber sleeves

  • Hydraulics & Pneumatics: Cylinder tubes, telescopic systems, piping

  • Machinery: Shafts, rollers, precision sleeves, components requiring machining

  • Furniture/Construction: Lightweight structures, frames, support profiles

  • Instrumentation: Precision assemblies requiring exact tolerances

Additional information

Application

Precision Application
Material

Alloy Steel, Carbon Steel
Steel Grade

E155, E190, E195, E220, E235, E260, E275, E320, E355, E370, E420, E460, E500, E600, E700
Technique

Cold Drawn, EFW, ERW, Galvanized, LSAW
Tolerance

±1%
Outer Diameter

25-426mm
Wall Thickness

0.5-100mm
Alloy Or Not

Is Alloy
Shape

Customer Requirements, Rectangular, Round, Square
OEM

Allow
MOQ

1 Ton
Sample

Allow
Processing Services

Bending, Customers's Requirement, Cutting, Decoiling, Moulding, Punching, Welding
Packing

Customer Requirements, Nylon Braided Tape, Wooden Box
Payment Method

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

LOGO, Package, Spray Label
Certification

API, BSI, BV, CE, ISO14001, ISO9001, ROHS, SGS, TS16949, TUV
Secondary Or Not

Non-secondary

Company Profile

TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and

trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and

credibility among domestic and foreign customers.

The company’s production plant covers an area of over 10,000 square meters, with an annual production

capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which

can satisfy customers’ personalized needs for raw materials in terms of diversity and timeliness.

The group holds shares in more than ten domestic production entities, whose main products include

seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings

( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.),

aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC

deep processing of metal materials such as tubes, rods, and casting parts.

Over the past 30 years, the company has been gradually developing new technologies and materials to meet

the growing needs of customers and various diversified needs, exporting to more than 56 countries and still

increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and

to facilitate one-stop purchasing for customers

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