GB/T 12459  同心异径管 DN 40×20-5RC@FF SC

DN 40×20-I-5 RC@FF SC

WN 1"-150 RF

PL150A-16RF AA=154.5

WN300(B)-16RF

PL700(B)-2.5 RF

BL900-16 RF

3 B5130103

法兰盖BL500-16 RF

SO 200-300 FFf0/@c0RF3RS RF/S.5 RJWRSRF@441671��@R

WN 25(B)-16 RFR@F60 FM 1700;-150 RF S=166RF b=4.5rf S=60A=7