HG/T 20592  法兰 WN 400-40 TB1=636FM S140 A1.6 B=27./u0

WN400-40tB1=636FM S140 A1.6 B=27./u0

SO 1"-150 RF.6=1

SO 2"-300 RF61 w210 RF/CH8/-1.

PL200B-10FF/00-=60b50mF00/RF-s=2061F/50

DN32-PN40 PL RF пҝҪ

DN80-PN63 SO

SO 200-150RF95 S0

SO 1"-600 RF55f000-RM0.-900 RF Sch80S

SO 125-16 RF5 R/