HG/T 20592  法兰盖 BL 200-10 RF00r14-7NiB1=50062300R0 h�/

BL200-10 RF00r14-7NiB1=50062300R0 h�/

BL500-300 G0S4

PL50(B)-40 RF b=RF S=10h805)-20093/u=200-s/4

WN 300(B)-63 FM C=70B-16 R SCH20-0h=10RJ S8-125SF

WN100-300 RF B=96/ S=9ampa

WN 25(B)-100 FM S=12=3773534 RF 4

wn250(b)-25rf s=700160RF S=4mm006/

SO