HG/T 20592  法兰 PL 25(B)-10 RF BB=2590 b=73=4 A4-10rf=3=5=60 h=4

PL25(B)-10 RF BB=2590 b=73=4 A4-10rf=3=5=60 h=4

PL100(B)-10RF D=378 K=350 BB=300 C=15 f1=1.5 d=330RFmpam135RFS

bl500(B)-16FFD=62/5 b

wn50(a)-25rf s=3rf n=64 a=48

pl50(b)-10 ff d=158 b1=72 c=16 b=6

3 FM1200-4.0S=0 ь╟ь▄ь�

pl150(B)-25 RF300 RF