GB/T 12459  弯头 DN 50-Ⅱ-390EL-10RFF8.6/0=-150 F/ S=10

DN 50-Ⅱ-3 90EL-10RFF8.6/0=-150 F/ S=10

DN 90×90×8-Sch160 TR

RFIV(W. D-2222)A450150rfe6S255f

WN100-16RFS30rf aS=3.

PL150B-16RF b

bl900(B)-10 RF500-1.6RFsã�

pL450b-6 RF49/128Jh40F70

WN 20-300 RF Sch100cH80S/0c2\u00bb pl300(b)300 RFh2 b

WN150-250