GB/T 12459  弯头 DN 50-Sch4090ES80s0R1mpa40a1�p

DN 50-Sch40 90ES80s0R1mpa40a1�p

BL 24"-150 RF2)-25 RF S=3mm RF

WN 150-300 RF Sch40S

BL50-16 RF

BL 80-25 RF

wn40-300rfsch.1

PL15B-40RF00=J-

WN 32(A)-63 FM

DN200/PN40/11B

WN 32(B)-63 FMb)=32�ӮS=5M1100.5 RF f3=3 undefB=99806 RF6R660sRFrf5=3.50r7