HG/T 20592  法兰 PL 250(B)-10 RF D=bR■°п▒Б┬≥Б√▓я▐Б■°п▒Б√═Б∙

PL250B)-10RF D=bR■°п▒Б┬≥Б√▓я▐Б■°п▒Б√═Б∙

bl500-16fmп©б╘п╠Б∙≤

pl50-10 ff d=155 k=120 l=191300-

WN 50(B)-40 RF S=3.9100AF=1

20592 wn 250-16 fm-

PL100(B)-6 RF

WN150-150 RFSCH830KHQfgBY

so200-25mch400RF/07-2b