At Xi’an QinSteel Trading Co., Ltd, we specialize in manufacturing Cap ASME B16.9 components engineered for extreme industrial environments. As a GMP-certified supplier, our caps meet rigorous global standards, ensuring leak-proof performance in oil refineries, offshore platforms, and high-pressure systems. With rapid global dispatch and a 10,000+ inventory, we deliver solutions that prioritize safety, durability, and precision.
The product components are forged from premium materials to seal pipeline ends securely. Designed for butt-welded integration, they prevent leaks in systems handling corrosive fluids, high temperatures, or pressures up to 2,500 PSI. Ideal for oil & gas, chemical plants, and power generation, these caps comply with ASME’s strict dimensional and material specs.
| Parameter | Details |
|---|---|
| Size Range | ½" to 48" (Custom sizes up to 64" available) |
| Materials | Carbon Steel (A234), Stainless (304/316), Duplex (UNS 31803), Alloys |
| Pressure | SCH 10S to 160, XXS |
| Temperature | -29°C to 538°C (-20°F to 1000°F) |
| Standards | ASME B16.9, ISO 9001, NACE MR0175, PED, GOST |
1. Certified Quality: Every Cap ASME B16.9 ships with Mill Test Reports (MTRs) and ASME compliance certificates.
2. Global Stockpiles: 15,000+ standard caps ready for immediate shipment from hubs in Houston, Rotterdam, and Singapore.
3. Sour-Service Expertise: NACE MR0175-compliant caps for H₂S-rich environments.
4. 45-Day Lead Time: 90% of orders delivered within 6 weeks, even for bulk requests.
5. Blockchain Documentation: Real-time material traceability via our digital platform.
6. 10-Year Warranty: Coverage against material defects or workmanship issues.
7. 24/7 Engineering Support: Optimize cap designs for hydrogen embrittlement or thermal cycling.



Q: Can your product withstand -46°C Arctic temperatures?
A: Yes! Our A420 WPL6 caps are impact-tested for subzero environments.
Q: Do you provide caps with internal epoxy coatings?
A: Absolutely. Request Fusion-Bonded Epoxy (FBE) or 3LPE coatings to prevent corrosion.
Q: What’s the MOQ for custom-sized caps?
A: MOQ starts at 50 units for non-standard sizes.
Q: How are caps packaged for offshore deliveries?
A: We use crates with humidity control and GPS-tracked logistics.
Q: Can you match legacy pipeline materials?
A: Yes—share chemical composition specs, and we’ll replicate it.
Email: info@sxqinsteel.com
Submit your project's material, size, and pressure requirements for a competitive quote. Need samples? We'll ship Cap ASME B16.9 within 72 hours.
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