GB/T 12459  弯头 DN 150-690EL00(B)-10RF80S�-1.F

DN 150-6 90EL00(B)-10RF80S�-1.F

WN 15(B)-16 RF S=3

SO 4"-150 RF

WN 25-300 RF

WN 25-300 FM S=4.50-

wn400(b)-10rf s=

WN 15-300 RF

PL50-25RJ0FM5am0ch40.5 RJ5 s0c.56 90EL5.64.6R�@4�o@40(40RF-R�@4п�Rrf s=4S=6/M Sch80d�

BL15-63 T0RF SC6f-