GB/T 12459  弯头 DN 40-Sch4045EL62013FFMF0a@ SG4755-R@0000O0@00 S rf 1JsR

DN 40-Sch40 45EL62013FFMF0a@ SG4755-R@0000O0@00 S rf 1JsR

LWN 40-300 RF Sch160 H=177

3 FM 300-2.5 δ0=12

SO 500-16 RF1.04

LWN40-1500 Rj S S500-25mgj scRFhg RFMNF56 H/

SOP FF 5K 50A

wn32(b)-160RF@F S22R@B0ï؟½RFF@F RF150 RF S

WN 500(B)-25 RF

PL 250(