ANSI B16.5 Class 300 DIN Standard Hot Dip Galvanized Carbon Steel Pipe Raised Face Weld Neck Wall Flange
Design: welding neck, slip on, blind, socket welding, threaded, lap-joint
Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. SCHXXS
Material: carbon steel , stainless steel ,alloy steel
Coating: black paint, yellow transparent paint, cold and hot dip galvanized

Materials shall be identified in the following ways:
(a) Cast flanges shall bemarkedwith theASTMspeci-fication, 1 grade identification symbol (letters and num-bers), and the melt number or melt identification.
(b) Plate flanges and forged flanges shall be marked with the ASTM specification 1 number and grade identi-fication symbol.
(c) Amanufacturermay supplement thesemandatory material markings with his trade designation for the material grade, but confusion of symbols shall be avoided.
(d) For flanges manufactured from material that meets the requirements for more than one specification or gradeof a specification listed inTable 1, seepara. 4.2.8.
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