GB/T 12459  弯头 DN 450-Ⅱ-645EL05 RF Sc��Рҝ�

DN 450-Ⅱ-6 45EL05 RF Sc��Рҝ�

WN 25(B)-16 RF S=3.5-60tfRF0440s3F56RF/80

so250(b)-6rf Suя▐Б�

DN100-PN10 WN RF Ⅱ S=6

PL 400(A)-6 RF0h40.6fm1

BL100(A)-16 FFb

WN 400-150 FF A=406 B=3H0 RF050-1570-4-150 R000

WN100-2500 RJSch40๏

pl600- 6