HG/T 20592  法兰盖 BL 300-10 RF8-17==26 s=-0

BL300-10RF8-17==26 s=-0

DN100-Class150 WN RF Sch80

SO 10"-150 RFs16R

DN250-Class150 WN RF

WN250-150RF B=249)-10 R

B WN 700-150 RF Sch40S

PJ/SE 150(B)-16 FF S=30

WN 25(B)-100 M S=4.5

B BL 700-150 RF

WN 24"-150 RF Sch40��A 1000F167.5 RJ RF Sc