GB/T 12459  弯头 DN 40-390EL0RF0-1

DN 40-3 90EL0RF0-1

WN800B-16FF5.5.1l2006 RF5-44F500-0.6fm scsch8

WN100(B)-100 RF

JPL 200×250(B)-16 RFfRFFFM2200-4.5RF1000-1.0/70-1650-1F¶Fh

pl 80(B)-100 M

A 2200

so400b-300rf0c643400m s=/T20FwRm60.70 S=09

so500a-150rf/)-1CA

PL150(A)-16RF40533.6 B=3