Cap ASME B16.9

TYPE: Seamless or Welded Material: A234 WPB/WP5/WP9/WPC/WP11/WP12/WP22, A420 WPL6, A403 WP304/316/321/32750, UNS 31803 etc. Size: 1/2" ~ 48" Thickness: Sch5s/10s/40s/Std/60/80/xs/120/160/xxs. End Connections: Butt-Welded Standard: ASME B16.9 Customization: OEM/ODM service Samples: Sample service available
Product Description

Reliable Cap ASME B16.9 Manufacturer & Global Supplier

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.

What Are ASME B16.9 Caps?

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.

Key Specifications

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

Why Our Caps Outperform Competitors?

  • Zero Leak Guarantee: Precision-machined ends for seamless welds.
  • Material Versatility: Choose from corrosion-resistant stainless steel, low-temperature carbon steel, or sour-service alloys.
  • Rapid Customization: OEM/ODM support for non-standard thicknesses, coatings, or markings.
  • Stress-Tested Durability: Hydrostatic testing at 1.5x rated pressure and 100% UT inspection.

Critical Applications

  • Terminating pipelines in refineries and LNG terminals.
  • Isolating sections during maintenance in offshore rigs.
  • Sealing high-temperature steam lines in power plants.

7 Reasons to Partner With Us

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.

Quality Assurance Protocols

  • Step 1: Raw material verification against ASTM specs.
  • Step 2: CNC machining with ±0.1mm dimensional accuracy.
  • Step 3: Non-destructive testing (RT, UT, PT).
  • Step 4: Hydrostatic/pneumatic pressure testing.
  • Step 5: Surface treatment (beveling, coatings).

Quality Control

Quality Control

Factory Equipment

Factory Equipment

Shipping Packaging

Shipping Packaging

 

FAQs: Your Concerns, Addressed

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.

Contact Us

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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