GB/T 12459  弯头 DN 700-Sch4090ES δ=22

DN 700-Sch40 90ES δ=22

WN250B-16RJ/70-165 RFch8040RF Sc

WN50-1500 M Sch100-900 RJke

SO 500(B)-16 RF

cpl50(b)-10rfbF00-180

wn10(b)-25 fm1.0/forum300rf.0/

WN 20(B)-63 M S=3.5

PL25(A)-6RFc8150 RF0/F/rf1W

SW20-300 RF0-3F470236 RF1CFM=1ot1519

20615wn40-1