Standard
ASME B16.9, JIS B2311
Size Range
½" – 48" seamless; 26" – 72" welded
Category
Fittings
Butt-weld pipe end caps in carbon, alloy, and stainless steel manufactured to ASME B16.9. Caps seal the end of a pipe run and are used to blank off piping for pressure testing, system isolation, or permanent termination. Available from ½" through 48" in seamless construction and 26" through 72" in welded construction, with wall thickness from Sch 5 through XXS.
Applications
- → Pipe system termination — permanent sealing of dead-end pipe runs
- → Hydrostatic and pneumatic testing — temporary capping during pressure tests
- → Pipeline shut-in — capping production or injection flowlines for maintenance
- → Manifold closures — blanking off spare outlet nozzles on production manifolds
- → Offshore and subsea pipeline ends — capping unconnected pipeline tie-in points
- → Petrochemical plant branch isolation — capping unused nozzles on process vessels
- → Marine and shipbuilding — corrosion-resistant stainless and alloy caps for sea-water systems
Standards & Certifications
- ASME B16.9 — Factory-made wrought buttwelding fittings — dimensional standard
- JIS B2311 — Japanese Industrial Standard for butt-weld pipe fittings
- ASTM A234 — Wrought carbon and alloy steel fittings — WPB, WP11, WP22, WP91 grades
- ASTM A403 — Wrought austenitic stainless steel fittings — 304, 316, 321 series
- EN 10204 3.1 — Mill test certificate
Materials
| Material Category | ASTM / ASME Grades |
|---|---|
| Carbon steel | ASTM A234 WPB, WPC |
| Alloy steel | ASTM A234 WP1, WP12, WP11, WP22, WP5, WP91, WP911 |
| Stainless steel | ASTM A403 WP304/304L/304H, WP316/316L/316H, WP321/321H, WP347/347H |
| Low-temperature steel | ASTM A402 WPL 3, WPL 6 |
| High-performance | ASTM A860 WPHY 42, 46, 52, 60, 65, 70 |
Supply Enquiry — Pipe Cap
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