HG/T 20592  法兰盖 BL 350-63 TRF S=/N=246.1

BL350-63TRF S=/N=246.1

PL50B)-6FF DFF178d=/15

PL65(B)-10 RF106-

SO 32(A)-6 RF=501fh00 R54h511-16R

WN65B-16 RFRFh40)-160165S=10.5 &a

bl450-900rf10 rf S=2560RFCH10SFF SCH10S RFf0pam3

PL100(B)-16 RF f1=122/0=105

2 CG 3000-1.020δ1=16

pl100(b)-16ff b1