HG/T 20592  法兰盖 BL 350-63 RF/50 ذ°ذ

BL 350-63 RF/50 ذ°ذ

PL50(A)-6 RFSchSp80RF/@5@0-10S/srcLc0RFSذ¨ï؟½S

DN800-PN6 PL RF Ⅱ

LWN 40-150 RFะ09Ni FM 5

WN25-150 RF S=3.2

WN 25-150RFsc=600-

WN 80-900 RF’Ã0/-

20615LWN40-150RF��ª

PL40(B)-10 RF BB=0

SO 40-300 RF4mpam/�f50