HG/T 20592  法兰 SO 400(B)-16 G4F S=4mpampampampampampampampwd=&

so400b-16g4F S=4mpampampampampampampampwd=&

47023 rf600-6.4 ãžâ´0=165 fmF2 R)-1n=S/

WN 80-150 RFï؟

bL125(B)-16 tb)-b).5

WN250-150 RF SCH40S-/2 h=1

BL 2"-300 RFв…Ў

lwn 50-300 rf b=52 h=2180 rf=.6 φ32F

WN20-40 RF Sch40S=40RF0f2"-30