Pipe Cap
Permanent Pipeline Terminal Closure | Butt & Socket Weld-On Caps
Pipe caps deliver permanent, leak-tight closure for pipeline terminals, built for long-sealed pipe ends that need no frequent access. Our range covers butt weld pipe caps for medium-to-large bore main lines and compact socket weld pipe caps for small-bore utility and instrument piping.
As professional pipe elbow manufacturer, we support custom size, wall thickness and connection types including threaded & socket weld.
Core Advantages of Pengrun Pipe cap
Permanent welded leak-proof closure
Multiple connection ends available
Seamless structure, stable pressure bearing
Multiple Materials Options
Smooth inner bore, no flow dead zones
فئة المنتجات
Industries
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Material & Specs
- Materials: Carbon steel A234 WPB, 304/316L stainless, custom alloy steel
- Standards: ASME B16.9, MSS SP-75
- Sizes: DN15–DN1200, Sch10–Sch160
- Ends: Butt weld, socket weld，threaded
Welding & Installation Tips
- Clean pipe ends before welding
- Control gap & alignment for full penetration
- Follow WPS; preheat thick-wall carbon steel caps
- Standard visual inspection, NDT available on request
Core selection comparison: Pipe Cap VS Blind Flange
| Item | Pipe Cap | Blind Flange |
| Closure form | Permanent welded seal | Removable bolted seal |
| Disassembly | Requires pipe cutting to remove | Quick removal with tools |
| Total cost | Lower single-unit cost | Higher with matching flange set |
| Pressure stability | Better for continuous long-term operation | For frequent opening scenarios |
| Recommended use | Permanently closed pipe terminals | Pipelines needing regular inspection |
