NB/T 47022  法兰 RF 1600-1.6

2 RF1600-1.6

WN 2 1/2"-150 RFS=1

WN 4"-150 RF Sch4773

WN 300(B)-16 RF S=4782

PL 300(B)-16 RF2911

pl32(a)-10fF-fF-s

WN 300(B)-16 RF S=4712

pl20b-16g/0RF/ wn50(RrF0(B) S=6

BⅡ 18370

bi 39240�221RF.5rf0150FM6070s300-40msFRF0f(BamJ00 RF500R