GB/T 12459  弯头 DN 80-490ELf s0rRF SL540=0090´=20002

DN 80-4 90ELf s0rRF SL540=0090´=20002

2015PL150(B)-10RFD= K= B

BI 1200 H=3-5820R-150f16S550 r

æ³⬢å⬦°pl300(b)-10rf

PL200-10RFr1=6F8 HG 130/PL R77.5 RJ Schs=RJ S=116.5rf B2/data

47022 wn300(b)-16 rf n=1

TPB-10 RF/16=158/0(B)-25RF16R

so250(b)-1