GB/T 12459  弯头 DN 200-845ELJ5 Kmpa0S50pampampaJ16FDR

DN 200-8 45ELJ5 Kmpa0S50pampampaJ16FDR

LWN 50-300 RF

SO 20(B)-16 RF44 00-

wn 500-16rfs.101050

WN25-900 RJ B=211.0/45cadatF45F60=3

DN 450×15-Sch40S RC 9610rfbspfs816/1.01FH55Fp83

3 RF 900-1.6 δ0=36

pl100(b)-10 rf

DN40-PN10 PL RF B=28 C=80 f1=1 L=M12