GB/T 12459  弯头 DN 40-1890EL56

DN 40-18 90EL56

wn100-150rfs=25m35c/80-00-4.rf0 R0FF15b00RF/)-10RF/F fF/00

bl40(B)-40FM/0h=165FSh10SSCH15/FF0F/-/120-20300RF S

bl400(a)-10 rf/-4.016RF(B)-1

SO50-150FM0FMF11m S=5h40 SCH40SFSch40 RF Sch400RF b=

pl25(b)-10rfhg/ S=1

so 150(b)-10 rf-

47