Flange - ASME/ASTM Fittings - ASME/ASTM Forged Fittings - ASME/ASTM Steel pipes (ASME/ASTM) Seamless steel tubes ASTM A106 - SA 106/P265GH - API 5L - API X52ASTM A333 GR6/P265NL Welded steel tubes ERW API 5L - ASTM A53SAW API 5L Wall Thicknesses Available in all wall thicknesses Dimensions ½" - 60"