HG/T 20615  法兰盖 BL 50-600 RF1@0��ذ�165FS@RF5@FSFS1@ch4SS5 RJ2A�)-40RF5 RJ�6data@f2s1�FFRF

BL 50-600 RF1@0��ذ�165FS@RF5@FSFS1@ch4SS5 RJ2A�)-40RF5 RJ�6data@f2s1�FFRF

BI 4617

2 A7697

bi 4997

4 A649

WN 20(B)-63 RF S=3

BI 7013

4 A304

2 A9934

BI 73994j@5c2@RF@443RF@AFF)-16 RF S=51FMF08@A BL100144R=5-16 RF16 RF-16/0)C-16 RF00/58-113