GB/T 12459  弯头 DN 32-Ⅱ-490EL0 ff dch

DN 32-Ⅱ-4 90EL0 ff dch

pl 40(A)-10RF-14/-f hg/t

WN15-63M16FM=1

bwn1100-300rf00N0e RF5.13ch40tRFf-F

WN75-600 RFS

WN 20-600 RF Sch4

PL 15-10 FFFDRF=6/S/f1-10-4b300 RFfm S5000

WN100(A)-16RFrf52.5b=55 SCH40-16MFf/

PL200(B)-10 RF30H=25520(

WN150B-25RF