GB/T 12459  弯头 DN 300-Sch12090ES23Jf0=5CH40c45E3D

DN 300-Sch120 90ES23Jf0=5CH40c45E3D

BL600(A)-6 RF� S=7.600-1.025.6/FRF2mF804001

LWN20-300 RF sch160sch4/-1451580/6.4F0-1.F/Wsch16M10RF

wn 50-150 rf sch.80F80S6Җа�

SO500(B)-16RF1

SH3406WN100-150RFSCH40.51=34

WN 350(B)-25 T S=10-1RF1RF0

PL 500(B)