GB/T 12459  弯头 DN 400-Sch6090ES¢â125

DN 400-Sch60 90ES¢â125

WN150(B)-25RFS=81

pl200-25mpampFF39/@WN1-4 �6Lch1

WN 200-300RF Sch.

WN 40-150 RF=7= bF0rf d=30 c

WN100-150 T Sch40650=3class60R=18.RF00a20

WN40-300 FM

WN400-150 RF 8THKF BB=

TPB-2=700

PL 200(B)-16 RF50 d=880 d1=840 d2=80