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Help CenterStainless Steel Pipe for Oil and Gas Industry 316L Seamless 4 Inch Schedule 160 High Pressure
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Hemaokang Steel (Shandong) Co., Ltd. proudly presents our premium 316L Stainless Steel Seamless Pipe – 4 Inch, Schedule 160, High Pressure, engineered specifically for the rigorous demands of the oil and gas industry. As a newly established yet rapidly growing exporter with an annual export value of US$50–100 million, we combine advanced manufacturing processes with strict quality control to deliver pipes that offer exceptional corrosion resistance, high strength, and reliable performance under extreme conditions. Our ISO 9001 certified facility ensures every pipe meets international standards, providing you with a dependable solution for sour gas, offshore, and high-pressure applications.
This 316L seamless pipe is manufactured using hot-rolled or cold-drawn processes to eliminate weld seams, resulting in uniform wall thickness and superior pressure integrity. The 4-inch nominal diameter combined with Schedule 160 wall thickness makes it suitable for systems requiring high burst strength and resistance to internal pressures up to 3000 psi (depending on temperature and environment). The low carbon content of 316L minimizes carbide precipitation during welding, enhancing its performance in corrosive environments rich in chlorides or sulfides commonly found in oil and gas operations.
Key Features & Technical Specifications
- Material: AISI 316L (UNS S31603) – Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
- Manufacturing Process: Seamless – No weld seam, ensuring uniform strength and reliability.
- Size: 4 inches (DN100) – Outer diameter 114.3 mm; Wall thickness as per Schedule 160 (approx. 13.49 mm).
- Pressure Rating: Designed for high-pressure services – Suitable for applications up to 3000 psi (subject to temperature derating).
- Surface Finish: Pickled and passivated, or annealed and pickled (optional).
- Ends: Plain end (standard) or beveled end for welding (available upon request).
- Length: Standard 6 meters, or custom lengths to meet project requirements.
- Certifications: ISO 9001:2015 quality management system certified.
| Parameter | Value |
|---|---|
| Nominal Diameter | 4" (DN100) |
| Outer Diameter | 114.3 mm |
| Wall Thickness (Schedule 160) | 13.49 mm |
| Weight per Meter | ~33.5 kg/m |
| Maximum Working Pressure | Up to 3000 psi (derate at high temp) |
| Material Grade | 316L (UNS S31603) |
| Standard | ASTM A312 / ASME SA312 (compatible) |
Benefits for Your Application
Choosing our 316L seamless schedule 160 pipe offers several advantages:
- Superior Corrosion Resistance: The 316L grade with low carbon content withstands harsh environments, including sour gas (H2S) and seawater, reducing maintenance costs.
- High Pressure Integrity: The seamless construction combined with Schedule 160 wall thickness provides a safety margin for high-pressure systems, minimizing risk of leaks or failures.
- Easy Fabrication: Excellent weldability and formability allow for field modifications, saving time during installation.
- Long Service Life: Robust mechanical properties ensure durability under cyclic loading and thermal stress, extending pipeline lifespan.
- Global Compliance: Our pipes are manufactured under ISO 9001 quality management, ensuring consistent quality batch after batch.
With a dedicated team of 51–100 employees, Hemaokang Steel leverages extensive industry experience in Liaocheng, Shandong – a major steel production hub. Our export network spans across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East, demonstrating our ability to satisfy diverse international requirements. We offer flexible packaging (bundled, crated, or containerized) and prompt delivery terms to meet your project schedule.
We invite you to experience the reliability of our 316L Stainless Steel Seamless Pipe for your oil and gas projects. Contact us today for a quotation, technical datasheet, or sample request. Our sales engineers are ready to assist you with customized solutions, including cutting, threading, and special testing (ultrasonic, hydrostatic, etc.) upon request. Trust Hemaokang Steel – your partner in high-performance piping solutions.
Frequently Asked Questions
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What is the difference between 316L and 316 stainless steel?
316L has a lower carbon content (max 0.03%) which minimizes carbide precipitation during welding, offering better corrosion resistance in welded conditions. It is preferred for oil and gas applications where post-weld heat treatment is not desired. -
Can this pipe be used for sour gas service (NACE MR0175)?
316L is generally considered suitable for sour gas environments, but we recommend confirming specific NACE requirements with our technical team. We can provide additional testing if needed. -
What is the maximum operating temperature?
316L can be used at temperatures up to 870°C in intermittent service and 925°C in continuous service, but for high-pressure applications, derating factors apply. Consult our engineers for your specific conditions. -
Do you provide third-party inspection?
Yes, we can arrange third-party inspection by recognized agencies such as SGS, BV, or TUV at the buyer's request. Additional charges may apply. -
What is the typical lead time?
For standard sizes and quantities (e.g., 20-50 tons), lead time is approximately 15-25 days after order confirmation. Custom lengths or special testing may extend the lead time. -
Can you supply pipes with a length longer than 6 meters?
Yes, we can produce up to 12 meters or as per your requirement, subject to transportation constraints. Please specify your needs. -
Is the pipe suitable for high-pressure steam applications?
Yes, the Schedule 160 wall thickness and 316L material make it suitable for high-pressure steam lines, but we recommend verifying pressure and temperature ratings with our engineering data. -
What is the minimum order quantity (MOQ)?
For standard sizes, MOQ is typically 1 ton (approx. 30 meters for 4" schedule 160). For non-standard lengths or special finishes, minimum quantity may vary.
Contact Hemaokang Steel (Shandong) Co., Ltd. today for expert advice and competitive pricing on your next project. We are committed to delivering quality, reliability, and value.
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