What are the available types of SS butt weld fittings?

Available types include: Elbow 90° Long Radius (1.5D), Elbow 90° Short Radius (1D), Elbow 45°, Tee Equal, Tee Reducing, Reducer Concentric, Reducer Eccentric, Cap, and Stub End. All manufactured to ASME B16.9 or B16.28 standards.

What size range is available for SS butt weld fittings?

Standard size range is 1/2 inch to 24 inch NPS. Larger sizes available on request. Schedules include SCH 5S, 10S, 40S, 80S, 160, and XXH.

What stainless steel grades are available?

Available grades: WP304, WP304L, WP316, WP316L, WP321, WP347, WP310S, WP904L, Duplex 2205 (WPD2205), and Super Duplex 2507 (WPD2507). ASTM A403 is the material standard for wrought SS fittings.

What standards do SS butt weld fittings comply with?

ASME B16.9 covers factory-made wrought steel butt weld fittings. ASME B16.28 covers wrought steel short radius butt weld elbows and return bends. ASTM A403 is the material specification for wrought SS pipe fittings. Testing includes dimensional, visual, and hydrostatic testing.

What are the applications of SS butt weld fittings?

SS butt weld fittings are used in oil and gas, chemical processing, petrochemical, power plants, refineries, food processing, pharmaceutical, and water treatment applications. Butt weld fittings provide permanent, leak-proof connections with smooth bore and minimal pressure drop.

ASME B16.9 / B16.28

SS Butt Weld Fittings

Name: SS Butt Weld Fittings
Brand: Supreme Valves India
SKU: SV-SSBUTTWELDFITTINGS
Rating: 4.8 (95 reviews)

Stainless steel butt weld fittings including elbow 90°/45°, tee equal/reducing, reducer concentric/eccentric, cap, and stub end. Size range 1/2" to 24" NPS, schedules SCH 5S to XXH. Manufactured to ASME B16.9, B16.28, ASTM A403 standards. Available in grades WP304/316/321/347/904L, Duplex 2205, Super Duplex 2507. Pressure rating up to 10000 PSI. Exported worldwide with complete material traceability.

Quick Summary

SS Butt Weld Fittings = Permanent, leak-proof piping connections with smooth bore and minimal pressure drop. Elbows redirect flow (90°/45°), tees split or combine flow, reducers change pipe size, caps seal ends, and stub ends connect to flanges. Made from wrought SS with ASTM A403 material spec. Ideal for high-pressure and high-temperature applications in oil & gas, chemical, petrochemical, and power plant piping systems.

SS Butt Weld Fittings - Elbow, Tee, Reducer, Cap

Key Specifications

Size Range: 1/2" to 24" (NPS)

Schedule: SCH 5S to XXH

Pressure: Up to 10000 PSI

Standards: ASME B16.9, B16.28

Material: ASTM A403

Wall Thickness: Matching or heavier than pipe

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Types of SS Butt Weld Fittings

Elbow 90° Long Radius

1.5D radius (centerline radius = 1.5 x nominal pipe diameter). Most common elbow type. Changes flow direction by 90 degrees with minimal pressure drop. Preferred for general piping layouts.

Elbow 90° Short Radius

1D radius (centerline radius = 1 x nominal pipe diameter). Used where space is limited. Higher pressure drop compared to long radius but more compact for tight installations.

Elbow 45°

1.5D radius. Changes flow direction by 45 degrees. Used to make gradual directional changes in piping systems. Often used in pairs to offset runs.

Tee Equal

Straight through + branch of same size as run. Maintains full bore on run, creates branch connection for flow diversion or combination. Most common tee configuration.

Tee Reducing

Branch size smaller than the run. Used when flow needs to be diverted to a smaller branch line. Run bore remains constant, branch is reduced.

Reducer Concentric

Same centerline throughout. Used in vertical lines or horizontal lines where flow stratification is not a concern. Creates smooth transition between pipe sizes.

Reducer Eccentric

Different centerline (offset). Preferred for horizontal lines to prevent air accumulation or liquid pooling on one side. Maintains consistent flow path.

Cap

Blind end fitting that seals the end of a pipe. Used for future tie-in points, pressure testing, or permanent closure of pipe runs. Butt weld cap with beveled edge.

Stub End

Used with lap joint flanges. The fitting has a enlarged stop shoulder inside for the flange to butt against. Allows easy disassembly for inspection or cleaning.

Materials of Construction (MOC)

Component	Material Specification
Body & Bonnet	Ductile Iron (ASTM A536 / EN-GJS-400-15)
Stem / Spindle	SS 410 / SS 420
Seat / Trim	EPDM / NBR / Bronze

Technical Specifications

Parameter	Specification / Standard
Manufacturing / Design Standard	EN 1171 / AWWA C509 / BS 5163
Testing Standard	API 598 / EN 12266-1
Pressure Rating	PN16 / PN25