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ASTM A105 A234wpb Butt Welded Smls Sch80 Carbon Steel Pipe Cap Material: carbon steel (ASTM A234WPS, A234WPC, A420 WPL6), (ST45.8 A105 A106 STG42) Alloy steel(ASTM A234 WP12/WP11/WP22/WP5/WP9/WP91) ...