GB/T 12459  等径三通 DN 250-Sch140TSTh40 huo59210WN5S=12(/53

DN250-Sch140 TSTh40 huo59210WN5S=12(/53

B WN 800-150 RF S=6F C=/50F h=0RF250

SO 1200(B)-6 RF0-S6rf-Hpah4 RF-80 b= BT=5

awn1000-150rf10155

SW 150(B)-10 RFuotHG203=463dn

WN15(B)-16 RF S=516 RF1

WN80-600 RJc=2059=1

PL150(B)-10 RF

lWN20-600RF-1.6911m8C=S