HG/T 20592  法兰盖 BL 550(B)-6 M

BL550(B)-6 M

20592 BL15-40RF0

SO400-150FMB=1B)6RF0

1 RF 800-0.6 خ´s=5

SO 2"-150 RF3

BL450-10RF44Fj&@t.5 RJ

PL80-10 RF Φ73 RF162F230a1

BL3500-10 RF0RF b=-16rf602/70-16

WN480B-25RF S=8

A WN 20-900 RF=4.781.6/1140-f/@A BL1000-11-Sh2� Rh400 RFS