NB/T 47022  法兰 C-M 1900-0.25/20δ1=12 s=e00004ch6

2 CM 1900-0.2520δ1=12 s=e00004ch6

bwn700-900rf--1h1hƒc6-60-600 RF S=12.7CHR00-16FMothg20MRF

WN 40-300RF S=5/)-

wn50-300rf hg00m=34/� FF S

WN80(B)-63 RF5 Р�

WN65-16RFB=70.254290EL0Rmpa

PL 40-40 M B=27 Y=180H80

wn200-300 rj00-10-2/n11-25F6

BL400