GB/T 12459  弯头 DN 200-12.590EL1000-1F1RF01

DN200-12.5 90EL1000-1F1RF01

wn150-150rf hg/t2061

WN300-150RFSCH40ngRFFL1000-1F1RF01

PL100B-10RFds-1e2/data/data/src/haibo.jpg

WN 200-150RF Sch40s Sch1δ00 RF S

WN 200-2500 RJ Sch140F S=9.53F

LWN 40-300 RF B=6rf-16

pl25(b)-40 m ,hg/forum.html

pl25-16r