GB/T 12459  弯头 DN 80-990EL90NF-1000RFp0 RF S

DN 80-9 90EL90NF-1000RFp0 RF S

B WN 14"-150 LFM

B WN 12"-150 LFM

WN 50-150 RF Sch40)-htm RF�¢آ°5ff R

B WN 10"-150 LFM

B WN 8"-150 LFM

BL80(B)-160 TGd0SF/A BL10R@592-2009@BLi1/

B WN 6"-150 LFM

BL 4-600 RF¿½ T

B WN 5&quo