GB/T 12459  弯头 DN 300-6.3545EL

DN 300-6.35 45EL

WN50-63Rf-30(L.5140sFc0Sc06 n=4

PL 25(B)-6 RF

PL600(B)-6 RF

BL 150-16 RF

BL 500-6 RF0b5��@55J0

PL 350(B)-16 RF

PL25(b)-10Rj68.c1=2S=60611=/aaA

PL120-25RF0RF

WN 250-150 RFn0f RF Sch4Fch4 rf s=6=110m16rfRS00-1-Sc2@RF@443RF5�δs=2