HG/T 20592B  法兰 LWN 20-16 RF H=164

HG/T20592B LWN20-16RF H=164

HG/T2059PL250(B)-10RF

DN40-PN250 WN RJ в…Ў A=32 S

WN 80(B)-25 RF S=12

DN400-PN10 PL RF Ⅱ

WN2"-150 RF B=42.7 Y1=8.

WN15-600RF Sc.05600 M41h4r C0

WN 1"-300 RF Sch80

WN20-40FM

WN 100-150 RF Sch40S-4000RF@D/F