GB/T 9124.1  法兰 DN50-PN16 WN RF Ⅰ Sch40��½ïS6 RF&a

DN50-PN16 WN RF Sch40��½ïS6 RF&a

BL20-300RFn450-600@b40 sch40F-150 rF0rf/-16 RF Sch16F600 S r300 LM00

SO 4"-150 RFRFmpam

pl15b-10rfDch40RF|06CrLИ≥0

SO32(B)-16 RFam

3 RF 500-1.0 δs=8

B BL1300-150RF

WN50-900 G080RF Sch80S5 RJ0SM0 RF

WN 8