Forged Socket Weld Fittings — Technical Data Sheet
Forged socket weld fittings are used on small-bore, high-pressure piping. The pipe is inserted into a recessed socket and joined with a fillet weld, giving a leak-tight joint without the bore restriction of a threaded connection.
Specification
| Product | Forged Socket Weld Fittings |
|---|---|
| Supply | OEM manufacturer — forged and machined by Teshi Group, India |
| Design standard | ASME B16.11 |
| Types | 90° and 45° elbows, tees, crosses, full and half couplings, reducing couplings, caps, unions (MSS SP-83), reducer inserts (MSS SP-79) |
| Size range | NPS ⅛" to 4" (DN 6–100) |
| Pressure classes | Class 3000, 6000, 9000 |
| End connection | Socket weld to ASME B16.11 |
| Manufacturing method | Closed-die forged; machined from forgings or bar |
Materials
| Carbon steel | ASTM A105, ASTM A350 LF2 Cl.1 |
|---|---|
| Stainless steel | ASTM A182 F304, ASTM A182 F304L, ASTM A182 F316, ASTM A182 F316L |
| Alloy steel | ASTM A182 F11 Cl.2, ASTM A182 F22 Cl.3 |
Typical applications
- Small-bore process, steam and hydraulic lines
- Instrument, drain and vent connections
- Branch connections on larger lines
Manufacturing
- Raw material: forging-quality bar from approved mills, verified by chemical analysis and PMI.
- Forming: closed-die forging, trimming and heat treatment as required by the material specification.
- Machining: CNC machining of sockets, bores and threads; threads gauged with calibrated plug gauges.
Inspection and testing
- Chemical analysis and mechanical tests per heat.
- 100% visual and dimensional inspection against ASME B16.11; thread or socket gauging on every lot.
- Hardness test; PMI on stainless and alloy steel.
- Dye-penetrant or magnetic-particle examination and hydrostatic proof test when specified.
Marking
Stamped to ASME B16.11 / MSS SP-25: manufacturer's mark, material grade, class, size and heat number.
Documentation
Mill test certificate to EN 10204 3.1 (3.2 with third-party inspection on request), dimensional inspection report, heat-treatment record where applicable, and NDT reports as specified. IBR certification on request.
Packing
Rust-preventive coating on machined surfaces, plastic end / face protectors, and seaworthy wooden cases or pallets marked with PO line, size, heat number and quantity.
Ordering information
Please state the following on your enquiry:
- Fitting type
- Nominal size (both sizes for reducing fittings)
- Class (2000, 3000, 6000 or 9000)
- End connection: socket weld, NPT or BSPT
- Material specification and grade
- Supplementary requirements
- Quantity and delivery point
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
FAQ
Forged Socket Weld Fittings: common questions
Which socket weld class should I choose?
Match the class to the pipe schedule: Class 3000 for Schedule 80, Class 6000 for Schedule 160 and Class 9000 for XXS.
Related products, data sheets and standards
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