GB/T 12459  弯头 DN 300-Sch40S90EL δ=200-

DN 300-Sch40S 90EL δ=200-

LWN 100-16 RF RF300 rfRFME B612@-R90F00 L5.2´=10F BB=8210FF wn2 è

47023C-RF800-1.08 h=10

PL50-16RFccF 300p

WN50-300RFthgFF605(2RRF BB-6@40@F.)-10rf0 R

47023 M1200-1.0/70-150

47023+fm600-2.5/@BII 1000

hhg/@so100-150 rf

+nb