HG/T 20592  法兰 BLS 65-10 RFb= d¼�8 RF00rfc/public/wx

HP-2 п╟п÷п╒п┴п╟п▒я┌б∙б≤п╟�

WN50A-40 RF S=480 K=435 n=12 L=256 RF

BI 500sch40050bRF

SW15-300 RF B1=15.5 B2=22.5 RF/HL100(B)-16 RF RF)-100c3R

BL20-6 RF0-f/@SO100008 R fmrfbl2.53560M2.5

WN150(b)-16 RF S=5f40FB=327rf

WN150