Leading Steel Pipe & Fittings Manufacturer — Sino East Steel Group
High-quality carbon steel butt weld pipe fittings manufactured to ASTM A234, ANSI B16.9, and ASME B16.28 standards. Full range of elbows, tees, reducers, and caps. Sizes from 1/2 inch to 48 inches in all wall schedules. Factory-direct pricing with global delivery.
Comprehensive inventory of ANSI B16.9 butt weld pipe fittings
Technical parameters for ANSI B16.9 butt weld pipe fittings
| Parameter | Specification |
|---|---|
| Fitting Types | 90° LR Elbow, 45° LR Elbow, 90° SR Elbow, Equal Tee, Reducing Tee, Concentric Reducer, Eccentric Reducer, Pipe Cap, Stub End, Cross |
| Size Range | ½″ – 48″ (DN15 – DN1200) |
| Wall Thickness | SCH 10, SCH 20, SCH 30, SCH 40, STD, SCH 60, SCH 80, XS, SCH 100, SCH 120, SCH 140, SCH 160, XXS |
| Carbon Steel Grades | ASTM A234 WPB, WPC, WPL6 |
| Alloy Steel Grades | ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91 |
| Stainless Steel Grades | ASTM A403 WP304/304L, WP316/316L, WP321, WP347 |
| Low-Temp Grades | ASTM A420 WPL3, WPL6, WPL9 |
| Dimensional Standards | ANSI/ASME B16.9, ASME B16.28, MSS SP-75, MSS SP-43 |
| End Preparation | Beveled ends per ASME B16.25 (30° bevel, 1.6mm root face) |
| Manufacturing Process | Seamless (hot-formed), Welded (from plate or welded pipe) |
| Testing | Hydrostatic test, radiographic (RT), ultrasonic (UT), PMI, mechanical testing |
| Certification | EN 10204 3.1 MTC, 3.2 (third-party) available on request |
Why choose our butt weld fittings for your piping systems
Butt weld connections provide a continuous, full-penetration weld joint with zero leakage potential — essential for high-pressure systems.
Weld joints maintain the full strength of the connected pipe, suitable for high-pressure (up to Class 2500) and high-temperature applications.
Smooth radius transitions and full-bore design minimize turbulence, pressure drop, and erosion compared to threaded or socket weld fittings.
Available in carbon steel, alloy steel, stainless steel, and low-temperature grades to match any service condition and fluid compatibility.
Every fitting is marked with material grade, size, schedule, heat number, and manufacturer identification. EN 10204 3.1 certification standard.
All fittings undergo rigorous quality control including visual inspection, dimensional checks, hardness testing, and NDE (RT/UT/PT) per specification.
Industries served by our butt weld fittings
Refinery piping, gas processing plants, and petrochemical facilities requiring high-integrity welded connections.
High-temperature steam and boiler piping, feedwater systems, and cooling water circuits in thermal and nuclear power plants.
Chemical plant piping, reactor connections, and corrosive fluid handling with alloy and stainless steel fittings.
Ship piping systems, ballast lines, fire main systems, and marine platform piping requiring corrosion-resistant materials.
Low-temperature A420 WPL6 fittings for LNG liquefaction, storage, and regasification facilities at temperatures down to -46°C.
Large-diameter butt weld fittings for water treatment plants, desalination facilities, and sewage treatment piping.
Cross-country pipeline fittings for oil, gas, and product transmission including pigging-compatible full-bore elbows and tees.
Common questions about butt weld pipe fittings
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