GB/T 9124.1  法兰 DN20-PN6 WN T Ⅰ Sch4040=1

DN20-PN6 WN T Sch4040=1

WN40-1500 RJ50925/585-150 RF

47021 c-m1200-0.6 d=24 RF-

PL200(A)-10RFRF80(B)F4Mgh50r

AWN750-300 RF)-16 RFch80SF S

WN 25-40 RJ1.6FhF6f=20S-1.0(B)

WN 20(B)-100 RF S=2.6

SO200(B)-16 RFRF660S RF RFF6RF/R3 F

WN500(B)-10RF00

WN80