ASTM A234 WP91 Pipe Fittings, ASTM A234 WP91 CAP, WP91 CAP, ASTM A234 Pipe Fittings, WP91 CAP, ASTM A234 WP91 butt weld Pipe Fittings, ASTM A234 CAP
1. Specification List of ASTM A234 WP91 Pipe Fittings
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Specification
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ASTM A234 / ASME SA234
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Dimensions
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ASME B16.28, ASME/ANSI B16.9, MSS-SP-43
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Size
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1/2″ NB to 24″NB in.
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Type
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Welded / Seamless / Fabricated
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Thickness
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Sch XXS, Sch 5s, Sch 80s, Sch 10s, Sch 160s, Sch 40s
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Surface Treatment
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Hot galvanized, Rust-proof black oil, Transparent oil
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Pipe Fittings Forms
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Elbow, Reducers, Caps, Short Radius Elbow, 2D Elbow, Long Radius Elbow, Unequal Crosses, 3D Elbow, Bend, 5D Elbow, 10D Elbow, Equal Cross, Stub End
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2. Composition Chart Of ASME SA234 WP91 Cap
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Grade
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C
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Mn
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Si
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S
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P
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Cr
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Mo
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A234 WP91
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0.05-0.2
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0.3-0.8
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0.5-1
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≤0.030
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≤0.030
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1-1.5
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0.44-0.65
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3. Mechanical Characteristics Of ASME SA234 WP91 Cap
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Grade
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Tensile Strength (Mpa)
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Yield Strength (Mpa)
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Elongation %
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A234 WP91
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415 – 585
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≥205
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≥20
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GENERALNOTE: The shape ofthese caps shall be ellipsoidal and shall conform to the requirements given in the ASME Boiler and Pressure Vessel
NOTES:
(1) Length E applies for thickness not exceeding that given in column “Limiting Wall Thickness for Length, E.”
(2) Length E1 applies for thickness greater than that given in column “Limiting Wall Thickness for Length, E” for NPS 24 and smaller. For NPS 26
and larger, length E1 shall be by agreement between the manufacturer and purchaser.
5. Available Testing Facilities of WP 91 Alloy Steel Fittings
- Eddy current examining
- Hydrostatic analysis
- Small tests
- Large-scale test
- X-ray test
- Impact analysis
- Pitting protection test
- Firmness test
- Positive material recognition
- Prompt test
- Chemical examination-Spectro analysis
