Socket weld union · forged A105 · MSS SP-83 · UAE stock
A three-piece forged union that lets a welded small-bore line be broken and remade without cutting pipe. Two socket ends weld to the pipe while a threaded nut pulls the ground seats together for a metal-to-metal seal.
Checked stock, standard-compliant
Full sizes, ratings & materials
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A socket weld union has three parts: a male end, a female end and a hex nut. Each end is fillet welded to pipe, and tightening the nut draws a precision ground spherical or conical seat into its mating face. The result is a leak-tight, metal-to-metal joint that can be undone for valve removal, equipment change-out or inspection. Forged steel unions are covered by MSS SP-83, which sets class 3000 and 6000 ratings.
Hamza Fasteners supplies class 3000 A105 socket weld unions from 1/8 to 3 inch, with integral steel seats as standard. Typical locations are next to pumps, meters, strainers and control valves on oil, gas, steam and hydraulic lines where a flange would be oversized. Threaded unions are also stocked. Ask our Dubai team for unions alongside elbows and tees for one combined quote.
Reference data for SW Union. Confirm exact size, rating and material for your order with our team.
This datasheet shows representative sizes for reference only. SW Union is supplied in the full range of sizes, ratings and materials — not a single option. Tell us what you need and we will confirm exact availability, specification and price.
| Size (NPS) | Pipe OD (mm) | Min. Socket Depth J (mm) | Pipe Schedule Match |
|---|---|---|---|
| 1/4" | 13.7 | 9.5 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 3/8" | 17.1 | 9.5 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 1/2" | 21.3 | 9.5 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 3/4" | 26.7 | 12.5 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 1" | 33.4 | 12.5 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 1-1/4" | 42.2 | 12.5 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 1-1/2" | 48.3 | 12.5 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 2" | 60.3 | 16.0 | Cl 3000: Sch 80 · Cl 6000: Sch 160 |
| 3" | 88.9 | 16.0 | Cl 3000: Sch 80 |
| Product Type | Forged union, 3-piece |
|---|---|
| Material | ASTM A105 body, nut & ends |
| Standard | MSS SP-83 |
| Pressure / Class | Class 3000 (6000 on request) |
| End Connection | Socket weld both ends |
| Seat | Integral steel-to-steel ground seat |
| Size Range | 1/8" – 3" NPS |
Pump & meter removal
Small-bore process lines
Trap & strainer change-out
Serviceable power-pack joints
Generator & tank piping
Valve maintenance points
Stocked in Deira, Dubai and delivered fast across the region. Wherever you are building, we supply in stock and project quantities.
Hamza Fasteners is a trusted SW Union supplier in Dubai and across the United Arab Emirates — Abu Dhabi, Sharjah and Ajman — with regular export supply to Saudi Arabia (Riyadh, Jeddah, Dammam), Qatar (Doha), Kuwait City, Oman (Muscat) and key East and West African markets including Tanzania (Dar es Salaam), Kenya (Nairobi and Mombasa), Nigeria (Lagos) and Ethiopia (Addis Ababa). Looking for a "SW Union supplier near me" or the best price in your city? Send us your requirement for a same-day quote.
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