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Quality Cold Drawn Seamless Stainless Steel Precision Pipe Bright Surface Tight Tolerance ±0.03mm factory
Quality Cold Drawn Seamless Stainless Steel Precision Pipe Bright Surface Tight Tolerance ±0.03mm factory

Cold Drawn Seamless Stainless Steel Precision Pipe Bright Surface Tight Tolerance ±0.03mm

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
Tags

Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Seamless Stainless Steel Precision Pipe
Product Summary
Cold drawn seamless precision pipe is manufactured from solid billet through a process of piercing and cold drawing, resulting in no weld line, uniform wall thickness, and excellent dimensional accuracy. Compared to welded tubing, it offers superior pressure resistance and structural integrity, ...

Product Details

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Seamless Stainless Steel Precision Pipe

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Cold Drawn Stainless Steel Precision Pipe

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Cold Drawn Seamless Pipe Bright Surface
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

Cold drawn seamless precision pipe is manufactured from solid billet through a process of piercing and cold drawing, resulting in no weld line, uniform wall thickness, and excellent dimensional accuracy. Compared to welded tubing, it offers superior pressure resistance and structural integrity, making it ideal for high-reliability applications.

Key Features:
  • No weld seam – homogeneous structure
  • Tight tolerance: OD/ID up to ±0.03mm
  • Smooth surface finish: Ra ≤ 0.4μm
  • Enhanced mechanical properties through cold working
  • Available in annealed, hard, or stress-relieved conditions
Product Specifications
Parameter Details
Applicable Standards ASTM A519, DIN 2391, EN 10305-1, JIS G3445, GB/T 3639
Common Grades Stainless: 304/304L, 316/316L, 321
Carbon/Alloy: 20#, 45#, 4140, 4130
OD Range 6mm – 100mm (customizable up to 200mm)
Wall Thickness Range 1mm – 15mm
Length Up to 12m fixed length, or cut-to-size
Process Piercing → Cold drawing → Annealing → Straightening → Pickling / Bright finishing
Delivery Condition Cold drawn (hard), stress-relieved, or annealed & pickled
Chemical Composition (Typical, %)
Stainless Steel Grades
Grade C Si Mn P S Cr Ni Mo
304 ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.030 18.0-20.0 8.0-11.0 –
304L ≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.030 18.0-20.0 8.0-12.0 –
316L ≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.030 16.0-18.0 10.0-14.0 2.0-3.0
Carbon / Alloy Steel Grades
Grade C Si Mn P S Cr Mo
20# 0.17-0.23 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 – –
45# 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.035 ≤0.035 – –
4140 0.38-0.43 0.15-0.35 0.75-1.00 ≤0.035 ≤0.040 0.80-1.10 0.15-0.25

Third-party test reports available upon request.

Mechanical Properties
Stainless Steel Grades (Annealed)
Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness (HB)
304 ≥520 ≥205 ≥35 ≤187
304L ≥480 ≥175 ≥35 ≤187
316L ≥480 ≥175 ≥35 ≤187
Carbon / Alloy Steel Grades (As-drawn or Annealed)
Grade Condition Tensile Strength (MPa) Yield Strength (MPa) Hardness (HB)
20# Annealed ≥410 ≥245 ≤156
45# Annealed ≥600 ≥355 ≤197
4140 Annealed ≥655 ≥415 ≤217
4140 Cold drawn + tempered ≥850 ≥740 ≤241

Hydraulic pressure test, eddy current test, and flattening test available upon request.

Applications

Due to its no-weld, homogeneous structure, cold drawn seamless precision pipe is widely used in high-pressure and high-safety industries:

Industry Typical Uses
Hydraulic Systems Hydraulic cylinders, piston rods, fluid power lines
Oil & Gas Downhole tubing, instrument lines, control lines
Automotive Fuel injection rails, steering components, axle housings
Mechanical Engineering Precision shafts, bearing sleeves, structural parts
Aerospace Hydraulic and fuel delivery lines
Power Generation Boiler tubes, heat exchanger components
Contact Us

For samples, technical datasheets, or a custom quote, please contact us.

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