GB/T 12459  弯头 DN 25-Ⅱ-Sch4090EL

DN 25-Ⅱ-Sch40 90EL

BL 300-900 RF16 G=824 K=92B=40h8

wn450b-25ffpR s=3-6RF50(a)

WN25-300 RF B=25f5-1

LWN 50-150 RF6N50(B)-2/77.9mp

WN20(B)-160 RJ0-300R0 RF h1

PL 25(B)-16 RF

SO 600(B)-16 RF5 S=0/100RFml561

WN 3/4"-150 ST

bl500-10RF50150SW(b)�