GB/T 12459  弯头 DN 400-Sch16090ELK=650

DN400-Sch160 90ELK=650

DN 80-Sch40S 45E3D

wn600-40rfRFF0-1150 RF2CB8R05 RJf/@4�p0O2m RF-4F.50(b)298��

WN40-600 T Sch40 L=19f12RF

PL250(B)-16 RF00(bC201RF S)-/

WN50(A)-300 RF=3.5

BL25(B)-2.5RFLTf1000-1F1RF01

SP-8ÅS956 δt09PL4RF6RFSch

WN40(B)