HG/T 20592  法兰 WN 150-16 RF s=60900-

WN 150-16 RF s=60900-

PJ/SE 250(B)-16RF

WN 20"-150 RF Sch40S

3 FM 600-1.6 δ0=10

47065.2 A4

WN 65(B)-63 M S=5

SW 40-150 RF

WN 80-300 RF

3 M 650-2.5 δ0=16

LWN150-300 RF Sch40 Sc4）-25600 RF Sch40Sb40-1.60rff0-10/d3DLAF NS T b=2 ffRFB=221 D=30Sc