HG/T 20615  法兰盖 BL 100-300 FF C=12 n=4

BL100-300 FF C=12 n=4

2 RF900-1.6 δ1=6F=195 H=500 g M fm1/FPSfF-63tf00 rJ B=1

1 CRF 600-0.62.50b16.0 Ш®В

WN32(B)-16 RF)-1

wn32-300fmc64Â

PL 500(B)-6 FF852-20 δs=1/ampampF6 b22 hR-1.6F0-

pl 50(b)-16 RF-10RFF db)-20ARFSch40RFRFc19pampam-Sch120

wn