Large Diameter Steel Pipe Supplier for LSAW, SSAW & Coated Pipe
Large diameter steel pipe manufacturer supplying LSAW, SSAW and coated steel pipe for oil & gas, water transmission and infrastructure projects. API 5L and custom sizes available.
High-Toughness Solution for sub-zero Environments
Standard: ASTM A333 / ASME SA333 Grade 6
Service Temp: Down to -50°F (-45°C)
Key Test: Mandatory Charpy V-Notch Impact Test
Size: 1/2″ to 24″ Seamless (SMLS)
Certification: MTC EN 10204 3.1, ISO, API
✅ 100% Impact Tested for guaranteed safety.
✅ Direct Factory Price with no hidden agent fees.
✅ Large Stock for rapid response in urgent maintenance projects.
ASTM A333 (ASME SA333) is the standard specification for seamless carbon and alloy steel pipe intended for low-temperature service. Specifically, ASTM A333 Grade 6 is most common, designed to maintain structural integrity and impact toughness in environments as cold as -50°F (-45°C).
They feature outstanding notch toughness and are widely used in natural gas, petrochemical, and power generation pipelines
| Chemical Component | Value (%) | Mechanical Property | Value |
|---|---|---|---|
| Carbon (max) | 0.30 | Tensile Strength | ≥ 415 MPa |
| Manganese | 0.29 – 1.06 | Yield Strength | ≥ 240 MPa |
| Silicon (min) | 0.10 | Impact Temp | -45°C (-50°F) |
Due to its high toughness in sub-zero conditions, A333 steel pipes are essential for:
Challenge: An energy company required 600 tons of seamless pipes capable of withstanding -40°C winter temperatures without brittle fracture.
Solution: JS FITTINGS provided ASTM A333 Grade 6 pipes with mandatory Charpy V-Notch impact testing at -45°C. Every pipe underwent strict NDT inspection.
Result: Zero pipeline failures during the first two winters; client confirmed 100% compliance with safety standards.
As a specialized manufacturer, we offer:
Q: What is the difference between A333 and A106 steel pipes?
A: A106 steel pipes are for high temperatures, while A333 steel pipes are specifically for low-temperature service with required impact testing.
Q: Is Charpy V-Notch testing mandatory?
A: Yes, for A333 Gr.6 carbon steel pipe, impact testing is a critical requirement to verify toughness at sub-zero temperatures.
| Grade | Application | Temp Range | Key Features |
| A106 | Boilers, refineries | Up to 750°F | High temp & pressure resistance |
| A53 | Water, steam, air lines | Up to 550°F | Versatile, economical |
| API 5L | Oil & gas pipelines | Varies | Seamless flow, corrosion resistance |
| A333 | Low-temp service | -50°F to +650°F | Toughness in sub-zero conditions |
When you choose to contact us, you will love our service
No matter you have rich experience of importing or new in this industry, our team will try the best to make your purchase of steel pipes fast and efficient.
All staff are7x 24 hours online and all your inquiries will be replied within 2 hours.
common size of steel pipes are in stock more than 800 tons, CIF orders will book stand-on vessel first.
Test report, certificates, CO and all customs clearance documents will be replied in time.
Large diameter steel pipe manufacturer supplying LSAW, SSAW and coated steel pipe for oil & gas, water transmission and infrastructure projects. API 5L and custom sizes available.
JS FITTINGS supplied 6 containers of large-diameter API 5L LSAW steel pipe to a Nigerian customer for a natural gas project, following factory and final product inspections.
LSAW steel pipe specifications, API 5L standards, sizes, grades, testing requirements and how to choose a reliable LSAW pipe supplier.
Seamless vs ERW steel pipe explained for industrial buyers. Compare manufacturing, pressure, oil & gas applications, cost, standards and selection criteria.
We will contact you within 2 hours, please pay attention to the email with the suffix “@jsfittings.com” or “@chinajsgj.com”.
