GB/T 12459  弯头 DN 200-490E3Dc1B=4

DN 200-4 90E3Dc1B=4

WN65-600 RF Sch10l0-150rfb

PL65(B)-6RFF930).2d=5

pl250-16 rf s8

B WN 24"-400 LT

WN100-600 RF S=7p

B WN 900-600 RF S=8=Ffhg2pamp0 RF S

so40(b)-150RF2@RF@4 Rch4755-R/statiRF Sch160 RF Sch10SF �3RF SCH40S6 RF&am300

WN20B)-6