GB/T 12459  弯头 DN 40-Sch80S180ELB360Rh80f000-150

DN 40-Sch80S 180ELB360Rh80f000-150

SW 20-100 RJ

WN400(B)-16 RF Sch80tmlr.40(R0/146

WN 200-25 RF0 b=3-1.

SO100-150RF B/0RFff5mp0 RFh4b0 r�

AXA-4 S1=10h400S

wn 250-300 rf sch4/-16h

WN1"-150 RF Sch4018r6B)-16RF10T50

3 CM 500-2.520δ0=18ker=0

wn50