HG/T 20615  法兰盖 BL 600-300 RF–њвЦ40rfs=M

BL 600-300 RF–њвЦ40rfs=M

WN 80-1500 RJ Sch40S

WN 4"-300 RF S=8.56

PL125B-16RF b=3 f1=3

WN 25-10 RJF)2500 RF Sch40S-900

WN400-25RJ M0hF RFSM0 R1RF@40@40ch4

PL2000-2.5FF0fm.5/1(B)-10RF/0m=m0RF8

WN 150(B)-25 RF

WN 80(B)-160 RF S=8

DN125/PN40/1