GB/T 12459  管帽 DN 450-Sch40Cpamph40S RF B=793 20III020e/u00aï؟½@4ï؟½o5 RF�

DN 450-Sch40 Cpamph40S RF B=793 20III020e/u00aï؟½@4ï؟½o5 RF�

PL 300(B)-10 RF

WN 50(B)-63 RF S=3

PL 25(B)-16 RF0(B)-25 RFFM Sc/50==4RF

BL 450-25 M

WN25(B)-16 M

PJ/SE 200(B)-16 RF S=3amp

WN 250(B)-63 RF

B WN1300-150 RF S=16

PL 100-16 RFSch40F5