Weldolets
Forged self-reinforced branch outlets welded directly onto the run pipe for strong branch connections without a tee — butt-weld, socket-weld and threaded outlet types to MSS SP-97.
Technical Data
| Weldolets — specification | |
|---|---|
| Run size | ½–48″ run |
| Branch size | ½–24″ branch |
| Core grade | A105 forged |
| Outlet std | MSS SP-97 standard |
| Standard | MSS SP-97 |
| Material | A105 forged; A182 F304/316, F11, F22; A350 LF2 |
| Outlet types | Butt-weld / socket-weld / threaded |
| Classes | XS×3000# · SCH160×6000# · XXS×9000# |
| ASTM A105 | Forged carbon steel |
| ASTM A182 | F304/316 · F11 · F22 (alloy/SS) |
| ASTM A350 LF2 | Low-temperature carbon |
| Combinations | XS×3000# · SCH160×6000# · XXS×9000# |
Key points
- Reinforced branch take-offs on mains
- Instrument, drain & vent connections
- Oil, gas & petrochemical piping
- Power & process plant headers
- Where a tee is not size-available
Drawing & Dimensions
A = height · B = base diameter on the run contour · C = outside diameter at the outlet · D = bore. Generic section, not to scale — values per the table below.
Click the drawing to enlarge
A = height · B = base Ø · C = run Ø at outlet · D = bore. Bevelled ends to ASME B16.9 / B16.25. Reducing and heavier walls (XS · SCH 160 · XXS) and other outlet types available — confirm on the approval drawing.
Click the drawing to enlargeDatasheet & Documents
The official Weldolets datasheet — specification, materials, standards and the complete dimension tables.
ISO 9001:2015 certified quality
How to Order
Worked example
WELDOLET · 8″ × 2″
MSS SP-97 · BW · STD×STD
ASTM A105 forged
MTC EN 10204 3.1Also in This Range
Questions & Answers
What is a weldolet?
A weldolet is a forged branch outlet fitting welded onto the run pipe to take a smaller branch, avoiding a fabricated reinforced tee. Dimensions follow MSS SP-97 and the usual grade is forged ASTM A105.
What is the difference between a weldolet, sockolet and threadolet?
All three are branch outlet fittings to MSS SP-97; only the branch connection differs. A weldolet is butt-welded to the branch pipe, a sockolet takes the branch in a socket weld, and a threadolet has a female thread. Weldolets suit larger and higher-pressure branches; sockolets and threadolets suit small-bore connections.
What run size do you supply for weldolets?
½–48″ run. Other sizes can usually be supplied on request — send your requirement for confirmation.
Which standards and grades are available?
ASTM A105: Forged carbon steel · ASTM A182: F304/316 · F11 · F22 (alloy/SS) · ASTM A350 LF2: Low-temperature carbon. See the datasheet for the complete list.
What materials are offered?
A105 forged; A182 F304/316, F11, F22; A350 LF2.
Is a technical datasheet available?
Yes — the official YTM Pipe datasheet with dimensions, materials and standards can be downloaded on this page.
How do I get a price?
Send size, specification and quantity through the Request-a-Quote form, WhatsApp or [email protected] — our team responds within one business day.
Weldolets. Specified. Checked. Delivered.
Manufactured and supplied to the governing standard, inspected and documented before dispatch.