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Quality 40mm Heavy Wall Stainless Steel Tube Seamless For High Pressure Hydraulic Systems factory
Quality 40mm Heavy Wall Stainless Steel Tube Seamless For High Pressure Hydraulic Systems factory

40mm Heavy Wall Stainless Steel Tube Seamless For High Pressure Hydraulic Systems

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
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

40mm Heavy Wall Stainless Steel Tube
Product Summary
The Heavy Wall Stainless Steel Tube is a seamless tube manufactured with significantly thicker walls than standard tubing, providing exceptional strength, high-pressure resistance, and excellent structural integrity. Designed for demanding applications in hydraulic systems, oil and gas, power ...

Product Details

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40mm Heavy Wall Stainless Steel Tube

,

Heavy Wall Stainless Steel Tube Seamless
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

The Heavy Wall Stainless Steel Tube is a seamless tube manufactured with significantly thicker walls than standard tubing, providing exceptional strength, high-pressure resistance, and excellent structural integrity. Designed for demanding applications in hydraulic systems, oil and gas, power generation, and precision machining, this tube offers reliable performance under extreme conditions. Its robust construction ensures long service life, resistance to collapse under external pressure, and ample material allowance for threading, grooving, or final machining operations.

Product Specifications
Parameter Details
Standards ASTM A269, A213, A312; ASME SA213; EN 10216-5; DIN 17458
Available Grades 304, 304L, 316, 316L, 321, 347, 310S, Duplex 2205
Outer Diameter 6 mm – 350 mm (1/4″ – 14″)
Wall Thickness 3 mm – 40 mm
Length 3m, 6m, or custom lengths up to 12m
Manufacturing Process Seamless – Cold drawn / Hot rolled / Pilgered
Heat Treatment Annealed after manufacturing
Surface Finish Pickled, passivated, or turned
End Finish Plain ends, beveled ends, or squared
Chemical Composition (Typical Values, %)
Grade C ≤ Si ≤ Mn ≤ P ≤ S ≤ Cr Ni Mo
304 0.08 0.75 2.00 0.045 0.030 18.0-20.0 8.0-10.5 –
304L 0.03 0.75 2.00 0.045 0.030 18.0-20.0 8.0-12.0 –
316 0.08 0.75 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0
316L 0.03 0.75 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0
Duplex 2205 0.03 1.00 2.00 0.030 0.020 22.0-23.0 4.5-6.5 3.0-3.5

Composition per applicable ASTM standards.

Mechanical Properties (at Room Temperature)
Grade Condition Tensile Strength (MPa) min Yield Strength (MPa) min Elongation (%) min Hardness (HB) max
304 Annealed 515 205 40 201
304L Annealed 485 170 40 201
316 Annealed 515 205 40 217
316L Annealed 485 170 40 217
Duplex 2205 Annealed 620 450 25 290

Tested in accordance with ASTM E8 / E8M.

Key Features
  • High Pressure Rating – Withstands extreme internal and external pressures
  • Superior Mechanical Strength – Resists deformation under heavy loads
  • Excellent Collapse Resistance – Suitable for deep subsea applications
  • Uniform Wall Concentricity – Precision cold drawn for consistent thickness
  • Machining Allowance – Sufficient stock for threading, grooving, or finishing
  • Seamless Construction – No weld seam for critical high-pressure service
  • Corrosion Resistance – Full stainless steel protection throughout thick section
  • Long Service Life – Heavy wall provides corrosion allowance for extended life
Pressure Rating Reference (316L Annealed – Seamless)
OD (mm) Wall (mm) Working Pressure (MPa) at 100°C Working Pressure (psi)
25.4 5.0 41.5 6,020
25.4 8.0 66.4 9,630
50.8 6.0 32.8 4,760
50.8 10.0 54.7 7,930
76.1 8.0 30.1 4,370
76.1 12.0 45.2 6,560
101.6 10.0 29.1 4,220
101.6 15.0 43.6 6,320

Calculated per ASME B31.3 with safety factor 4:1. Contact us for specific requirements.

Dimensional Tolerances
Parameter Tolerance
Outer diameter (cold drawn) ±0.1 mm for OD ≤ 50 mm; ±0.2% for larger
Wall thickness ±10% (min ±0.2 mm)
Concentricity ±8% of wall thickness
Length (fixed) +0 / -3 mm
Straightness 0.15% of total length
Applications
High Pressure Hydraulic Systems
  • Hydraulic cylinder tubes
  • Piston rod housings
  • High-pressure accumulator bodies
  • Injection molding machine components
  • Press brake cylinders
Oil & Gas
  • Downhole tubing and casing
  • Wellhead equipment
  • Subsea control lines
  • Choke and kill lines
  • Offshore platform risers
Power Generation
  • Boiler tubes (high pressure)
  • Superheater and reheater tubes
  • Nuclear reactor components
Precision Machining
  • Machined sleeves and bushings
  • Hollow bar replacement
  • Bearing races and rings
  • Pump shafts (hollow)
  • Precision rollers
Structural Columns
  • Heavy load-bearing supports
  • Offshore platform legs
  • Bridge compression members
  • Mining equipment frames
  • Heavy machinery columns
Pressure Vessels
  • Small-diameter pressure vessels
  • Accumulator shells
  • Gas cylinder bodies
  • Autoclave components
Heavy Wall Tube vs. Hollow Bar
Property Heavy Wall Tube Hollow Bar
Manufacturing Cold drawn / hot rolled seamless Centrifugal cast or pierced
OD Tolerance Tighter (±0.1 mm) Looser (±0.5 mm or more)
Wall Concentricity Excellent Good
Surface Finish Smooth (as-drawn or pickled) Rough (as-cast or as-rolled)
Length Up to 12 m typical Typically shorter
Corrosion Resistance Excellent (passivated) Good
Typical Use Hydraulic cylinders, precision machining Structural, heavy machining stock
Contact Us

For inquiries, technical datasheets, or custom sizes, please contact our sales team.

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