GB/T 12459  弯头 DN 20-Ⅱ-4.590ELch4 BB=580095/u00e5/public/blue

3 B4

SO 32(B)-16 RFB)-16 RFSch-RF FF5rf400 RFmpam40

BL350-10RF6 RF S=4m5FS=2.620)-1/f-1.6/84-170.5 N=49c2/u0RForb)-

BL 600-25 RF

so100b-16rf2.5/40502304000F40

47023fm400-2.5 sRF592-20

WN300(A)-16RF SCH30jRF1.660-0.66FM

WN 600(B)-16 RF

1 CRF 700-0.620