Seamless Steel Pipe for High-Pressure & Corrosive Applications
Seamless steel pipes are manufactured for oil, gas, power, and mechanical systems requiring high strength and corrosion resistance. Produced from carbon, alloy, or stainless steel under ASTM and EN standards, they ensure uniform wall thickness, smooth internal finish, and long service life under demanding pressure and temperature conditions.
Produced to ASTM A106 / A333 / A335 / A312 and EN 10216-5 standards.
Available in carbon, alloy, and stainless steel grades for diverse service environments.
Excellent pressure integrity, corrosion resistance, and dimensional precision.
Supplied with hydrostatic testing, NDT inspection, and EN 10204 3.1 documentation.
SEAMLESS STEEL PIPE — Precision, Strength & Reliability
- Seamless steel pipes provide superior strength, uniform structure, and zero weld defects.
- Designed for oil, gas, chemical, and mechanical systems requiring corrosion and pressure resistance.
- High-temperature performance and clean internal finish ensure reliable flow and durability.
- Manufactured under strict dimensional control with seamless steel pipe quality inspection.
- Available for boiler, line, and structural applications worldwide.
Description
Seamless steel pipe is manufactured without any welding seam, delivering consistent strength and superior integrity under pressure. It is produced by hot-rolling or cold-drawing solid billets, then heat-treated to achieve a smooth internal surface and precise dimensional control. These pipes perform exceptionally in high-temperature, high-pressure, and corrosive environments across energy, petrochemical, and structural sectors.
All seamless steel pipes are supplied according to ASTM and EN standards, including A106, A333, A335, and A312. Material options include carbon, alloy, and stainless steel grades to suit oil & gas, boiler, and mechanical systems. Each seamless steel pipe undergoes hydrostatic, ultrasonic, and dimensional testing to ensure flawless quality and full traceability with EN 10204 3.1 certification.
- High strength and toughness in seamless steel pipe structure — no weld seam defects.
- Excellent resistance to pressure, temperature, and corrosion.
- Dimensional precision and clean bore for stable flow in critical systems.
- Comprehensive inspection: hydrostatic, UT, MT, and PMI testing.
- Reliable seamless steel pipe supply for global engineering projects.
| Product Name | Seamless Steel Pipe |
|---|---|
| Standards | ASTM A106 · A333 · A335 · A312 · EN 10216 |
| Grades | Carbon Steel · Alloy Steel · Stainless Steel |
| Manufacturing | Hot Rolled / Cold Drawn Seamless Process |
| Size Range (OD) | 6 mm – 630 mm (1/8" – 24") |
| Wall Thickness (WT) | Schedule 5S · 10S · 40S · 80S |
| Length | 6 m standard (or as required) |
| Surface Finish | Annealed & Pickled · Polished |
| Ends | Plain / Beveled · Plastic Caps |
| Standard | Typical Grades |
|---|---|
| ASTM A106 | Gr. B / C — Carbon Steel Seamless Pipes for Pressure Service |
| ASTM A333 | Gr. 6 — Low Temperature Seamless Steel Pipe |
| ASTM A335 | P11 · P22 · P91 — Alloy Steel Seamless Pipes for Boilers |
| ASTM A312 | TP304 · TP316 — Stainless Steel Seamless Pipes |
Specifications Sheet
Main Applications
Stainless steel pipes provide cleanability, corrosion resistance, and high-temperature capability across diverse industries. With austenitic grades (304/316) and duplex options (e.g., 2205), they are used where hygiene, durability, and long service life are essential in food, pharma, chemical, water, marine, and architectural environments.
Food & Beverage Processing
Hygienic piping for dairies, breweries, and beverage lines; polished finishes support clean-in-place (CIP) and sanitation.
Pharmaceutical & Biotech
Cleanable, low-contamination transport for purified water, WFI loops, and process lines with passivated/polished surfaces.
Chemical & Petrochemical
Corrosion-resistant conveyance for acids, solvents, and process media; grade selection (304/316/duplex) per chemistry.
Desalination & Water Treatment
Reliable performance in chlorinated and saline environments; 316L/duplex options for elevated chloride resistance.
HVAC, Heat Exchangers & Architecture
High-temperature service for heat transfer and flue systems; attractive, durable finishes for architectural use.
Advantages
- Corrosion Portfolio: Austenitic and duplex grades cover chemicals, water, and marine exposure (grade-dependent).
- Hygienic Surfaces: Annealed & pickled or polished finishes for sanitary processes and easy cleaning.
- Temperature Capability: Suitable for elevated-temperature service and thermal cycling (by grade).
- Dimensional Accuracy: Clean internal finish and tight tolerances support stable flow and easy fabrication.
- Flexible Supply: Seamless for maximum integrity; welded (ERW/TIG) for cost efficiency and fast lead times.
Packing & Transportation
Pipes are protected from contamination and surface damage from mill to site using capped ends, surface wrapping, and export-grade crating.
- End Protection & Wrapping: Plastic caps, PE film or woven sleeves; interleaves to prevent scratching.
- Pallets / Wooden Crates: Bundled with straps and edge guards; anti-rust paper and desiccants for sea freight.
- Containerization: Standard 6 m lengths packed for 20′/40′ HC as applicable; longer or heavy lots via breakbulk.