GB/T 12459  弯头 DN 300-Ⅱ-17.590EL

DN 300-Ⅱ-17.5 90EL

LWN 20-150 RF B=21

pl80(b)-16rf b==8RFR

WN150-16 RF S=3.4

WN65-63RJ S=690S6FSFL RF Ⅱa0@40Hta5 RJ0SM56/4

PL 400(B)-6 RF

SO 65-150 RF

SO100-150 RF B=100F SFM14=F-1@RF8@S02&3F5c

BL150-16 RF

WN200-25 RF S=9mmF40S f=1.83.55.360400at