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ANSI Standard:
a) ASTM AISI B16.5, ASA, API-605, AWWA-c207, MSS-sp44;
b) Kinds of flange: Slip-on, Welding Neck, Blind, Threades, Lap-joint, Socket welding;
c) Class of pressure: 150LB,300LB, 600LB, 900LB, 1500LB,etc.
d) Size:1/2"-36"
LONG WELDING NECK FLANGES
