Seamless steel pipe
Seamless steel pipes are the backbone of modern industrial applications, offering superior strength, durability and reliability. As a leading manufacturer of high-quality seamless pipes, we provide solutions for various industries including oil & gas, construction, power generation and more.
Key Specifications of Our Seamless Steel Pipes
- Material: Carbon steel, alloy steel, stainless steel
- Size Range: OD 1/8" to 24"
- Wall Thickness: 1.0mm to 50mm
- Length: 6m to 12m (custom lengths available)
- Standards: ASTM A106, A53, API 5L, ASME SA106
- Pressure Rating: Up to 3000 PSI
- Temperature Range: -50°F to 1000°F
Detailed Product Parameters
| Parameter | Value | Testing Method |
|---|---|---|
| Tensile Strength | 415 MPa min (Grade B) | ASTM A370 |
| Yield Strength | 240 MPa min (Grade B) | ASTM A370 |
| Elongation | 30% min | ASTM A370 |
| Hardness | 72 HRB max | ASTM E18 |
| Chemical Composition | Carbon: 0.30% max, Manganese: 0.29-1.06% | ASTM A751 |
Seamless Steel Pipe FAQ
Q: What are the main advantages of seamless steel pipe over welded pipe?
A: Seamless steel pipes offer superior strength and reliability as they have no welded seams which are potential weak points. They provide better pressure containment, uniform shape, and higher resistance to corrosion and mechanical stress. The manufacturing process ensures consistent wall thickness throughout the pipe length.
Q: How does the manufacturing process affect the quality of seamless steel pipe?
A: The quality of seamless steel pipe is directly related to the manufacturing process which includes precise temperature control during billet heating, accurate piercing and elongation processes, and strict heat treatment procedures. Our state-of-the-art mills use rotary piercing and elongation technology to produce pipes with excellent mechanical properties and dimensional accuracy.
Q: What surface treatments are available for seamless steel pipes?
A: Seamless steel pipes can be supplied with various surface treatments including black (mill finish), varnished, galvanized, or coated with protective layers like epoxy, FBE, or 3LPE. The choice depends on the application environment - for instance, galvanized pipes are ideal for outdoor use while epoxy coating provides excellent corrosion resistance for underground pipelines.
Applications of Seamless Steel Pipes
Seamless steel pipes are widely used in:
- Oil and gas transmission pipelines
- High-pressure boiler tubes
- Structural applications in construction
- Mechanical and engineering components
- Chemical processing equipment
- Power generation plants
- Automotive and aerospace industries
Quality Assurance
Our seamless steel pipes undergo rigorous quality control:
| Test | Standard | Frequency |
|---|---|---|
| Hydrostatic Testing | ASTM A106/A53 | 100% of pipes |
| Ultrasonic Testing | ASTM A435 | 100% of pipes |
| Eddy Current Testing | ASTM E309 | 100% of pipes |
| Chemical Analysis | ASTM A751 | Per heat |
| Mechanical Testing | ASTM A370 | Per heat |
Packaging Options
We offer various packaging solutions for seamless steel pipes:
- Bundled with steel strips
- Wooden crates for international shipment
- Plastic caps for pipe ends
- Waterproof wrapping available
- Custom packaging upon request