NB/T 47023  法兰 C-FF 1000-2.5h4016 R&a

47023c-ff1000-2.5/h4016 R&a

WN20(B)-40RF S =4.45RF200-6068Fh0

WN 500(B)-10 FM S=16

BL250-16rfMS=4-6f=1

LJ 24"-150 RF Sch40S�)312272R30Sc-20�–

WN80(B)-300 M1.60(B)-16RFF Sch4

BL65(B)-25 rfFf25 RF=025 rf

bl250(b)-900rf80¸º120hg�€Â