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Weld Fittings and Flanges - ASTM Specifications

Weld Fittings and Flanges - ASTM Specifications BUTT WELDING FITTINGS Carbon Steel Material Specification ASTM Specification A234 GRADE SYMBOL

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Text of Weld Fittings and Flanges - ASTM Specifications

Weld Fittings and Flanges - ASTM Specifications BUTT WELDING FITTINGS Carbon Steel Material Specification ASTM Specification A234 GRADE SYMBOL WPA (Grade A) WPB (Grade B) Type of Steel Carbon Carbon Chemical Composition Max. Max. Minimum Physical Requirements TS - 48,000 | YP - 30,000 TS - 60,000 | YP - 35,000 Heat Treatment Cooled in still air. Cooled in still air. FLANGES Carbon Steel Material Specification* ASTM Specification A181 ASTM Specification A105 GRADE SYMBOL I II III IV Type of Steel Carbon Carbon Chemical Composition Max. Max. Minimum Physical Requirements TS - 60,000 YP - 30,000 TS - 70,000 YP - 36,000 TS - 60,000 YP - 30,000 TS - 70,000 YP - 36,000 Heat Treatment Hot forged with finishing temperature above upper critical. Cooled in still air. Hot forged with finishing temperature above upper critical. Cooled in still air. *Material specifications for the ASME Boiler Code are the same as ASTM except the letter S is prefixed thereto. A 35% Carbon maximum for flanges which are to be welded has been established by ASTM A181 and A105. Grade and Composition Symbols for Carbon Steel Butt Welding Fittings Seamless Pipe ASTM A106 Grade A Plate ASTM A285 Grade C Forgings ASTM Grade 1 WPA Bars* ASTM GR. 1008-1022 Seamless Pipe ASTM Grade B Plate ASTM Grade 6S Forgings ASTM Grade 11 WPB Bars* ASTM GR. 1025-1030 Seamless Pipe ASTM A106 Grade C Plate - WPC Forgings ASTM A104 Grade 11* * For fittings 2" nominal size and smaller Low Temperature Carbon Steel Seamless and Welded Pipe ASTM A332 Grade O Plate ASTM A300 Class 1 WPLO Forgings ASTM A350 Grade LF1

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