Xi 'An QinSteel Trading Co., Ltd delivers precision-engineered ASME B16.11 Couplings for high-pressure oil, gas, and industrial piping systems. With GMP-certified production, a 1M+ global inventory, and API/PED compliance, we ensure rapid bulk order fulfillment (7–15 days) without compromising quality. Whether you need standard threaded/socket-weld couplings or custom solutions, our expertise guarantees leak-proof performance under extreme conditions.
Engineered to meet strict ASME B16.11 tolerances, our couplings provide secure, permanent connections for pipes of the same size. Available in threaded (NPT, BSPP) or socket-weld designs, they’re ideal for instrumentation lines, hydraulic systems, and small-bore piping in confined spaces.
| Parameter | Details |
|---|---|
| Standard | ASME B16.11, BS 3799 |
| Types | Threaded, Socket-Weld |
| Sizes | 1/8" to 4" |
| Pressure | 3000LB, 6000LB, 9000LB |
| Materials | A105, A350 LF2, F304/316, etc. |
Every coupling undergoes ultrasonic testing (UT) and hydrostatic validation to exceed ASME B16.11 specs. Certificates (MTRs, NACE) accompany shipments for audit compliance.
Choose from carbon steel, stainless steel (F304/316), or A694 F65 high-yield materials for sour gas, offshore, or high-temperature environments.
Need non-standard threads, coatings, or sizes? Our R&D team prototypes custom ASME B16.11 Couplings in 72 hours. Pre-stocked inventory in the US, UAE, and Singapore ensures same-week shipping.
Dedicated freight channels handle 20-ton+ orders to remote oilfields. Packaging includes anti-corrosion VCI films and reinforced wooden crates.
✅ 10-Year Warranty: Free replacements for material defects.
✅ ISO 9001 & API Q1 Certified: Globally accepted quality.
✅ Agile MOQs: Order 100–50,000+ units with volume discounts.
✅ 24/7 Engineering Support: Technical docs and installation guidance.



Q: How quickly can you ship 10,000 products to the Middle East?
A: Pre-stocked UAE inventory ships within 3–5 days. NACE MR0175 compliance included.
Q: Do you provide material test reports (MTRs)?
A: Yes. Each batch includes MTRs with chemical composition and mechanical properties.
Q: Can I get samples before bulk ordering?
A: Absolutely. Request samples via email for quality verification.
Q: Are your couplings compatible with ASME B16.5 flanges?
A: Yes. Designed for seamless integration with ASME B16-series fittings.
📧 Email: info@sxqinsteel.com
🌐 Live Chat: Visit our website for instant support.
Optimize your pipeline reliability with ASME B16.11 Couplings built for extreme performance. Let’s engineer your success.
Learn about our latest products and discounts through SMS or email