40mm Heavy Wall Stainless Steel Tube Seamless For High Pressure Hydraulic Systems
Price:
Negotiable (Request a Quote)
MOQ:
100kg
Delivery Time:
15-25days
Brand:
Baosteel，TISCO
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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Company
Shanxi Zhongcheng Metal Co., Ltd.
Location
Room 2, No. 221 Tianzhang Avenue, Fengdong New City, Xi'an, Shaanxi Province
Contact Person
Zhongcheng Metal