SIZE:1/2" TO 72" STANDARD:JIS 5K 10KA 10KB 16K 20K 40K DIN 2576 PN6 PN10 PN16 PN25 PN40 ANSI B16.5 CLASS 150,CALSS 300,CLASS 600,CALSS 900MATERIALS:ASTM A105,Q235,301,304,304L,316,316L
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