GB/T 12459  弯头 DN 200-Sch4045EL

DN 200-Sch40 45EL

PL 500(B)-10 RF

PL40A-10RF16115f

PL20(B)-16RF b=3

SO 40(B)-16 RF

DN500/PN16/01B

PL32(B)-16RF40FMFM16RF0 RcRF1000-0.66rfs25 S=10 B=303(B)-16RFM0lF F rFB)-6-10R

WN 36"-300 RF Sch40Ss=N1l(B

BL 500-300 RF3405Rmpa02159 Sch40 A

PL20(