Description
Stub ends, lap joint flanges and blind discs are simple parts that make piping easier to build, maintain and isolate. Fitting World Trading LLC stocks them in carbon steel and stainless steel at our showroom in Nad Al Hamar, Dubai. As a result, MEP contractors, plant teams and shipyards across the UAE can collect them the same day.
First, the fitter welds a stub end to the pipe. Then a lap joint flange slides over it. Because the flange is loose, it turns freely, so bolt holes line up quickly. In addition, the flange never touches the fluid, which means you can use a carbon steel flange on a stainless steel line to save cost.
Stub Ends, Lap Joint Flanges and Blind Discs Explained
- Stub ends: short pipe pieces with a flared lap. Also, we stock short pattern (MSS SP-43) and long pattern (ASME B16.9) stub ends in Type A and Type B.
- Lap joint flanges: loose backing flanges to ASME B16.5. They are ideal where teams open lines often, for example for cleaning or inspection.
- Blind discs and spectacle blinds: solid plates that close off a line safely. For instance, they isolate equipment during shutdowns, testing and maintenance (ASME B16.48).
Why Choose Our Stub Ends
- Easy bolt alignment: since the loose flange rotates, fit-up is faster on site.
- Lower cost on alloy lines: in fact, only the stub end needs the expensive material.
- Quick maintenance: joints come apart easily, so they help on lines that need regular cleaning.
- Certified stock: moreover, every item has an EN 10204 3.1 certificate with heat number traceability.
Sizes and Standards
| Parameter | Specification |
|---|---|
| Stub ends | MSS SP-43 (short pattern), ASME B16.9 (long pattern), Type A and Type B |
| Lap joint flanges | ASME B16.5, Class 150 to 600 |
| Blind discs and spectacle blinds | ASME B16.48, Class 150 to 600 |
| Sizes | 1/2″ to 24″ NB |
| Schedules | SCH 10S, 40S, 80S, STD, XS |
| Materials | Stainless steel ASTM A403 WP304L / WP316L; carbon steel ASTM A234 WPB and ASTM A105 flanges |
Flange dimensions follow the ASME B16.5 and B16.48 standards.
Where Stub Ends Are Used
- Chemical and food plants: for example, stainless lines that teams clean or inspect often.
- Desalination and seawater lines: in particular, SS 316L stub ends with carbon steel lap joint flanges.
- District cooling and HVAC: similarly, blind discs for isolation during flushing and testing.
- Oil, gas and marine: finally, spectacle blinds for safe isolation during shutdowns.
Collect From Our Dubai Showroom
To order, visit Showroom No. 14, Nad Al Hamar, Dubai to collect stub ends and flanges over the counter. We also supply the matching GI, MS and SS pipes. For quotations or delivery across the UAE, call +971 4 285 1521 or message us on WhatsApp at +971 50 486 7233.
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