GB/T 12459  弯头 DN 15-Sch40S45ELampampampampampampamp

DN 15-Sch40S 45ELampampampampampampamp

BI 500=6002.4-12-10

so32-6rf6/1043�40RF��77.5

WN 65(a)-16 RF S=5.5

DN65-PN16 PL/C RF Ⅱ

BL600-900 RF Sch405 rf s=

PL80(B)- 16RFpf�5 RJ-1671@°F5@P0-300R

WN50(b)-16rf�’ã†â€™ãƒ-s/@a

3 FM 350