GB/T 12459  弯头 DN 600-Sch4090E3D3D88 L=

DN 600-Sch40 90E3D3D88 L=

PL100(B)-16 FF h=156- 2000-

BL25(B)-25FMn100

PL300(B)-6 rfF50 R 56 76665HG76YSch40pl

bl50-300rjm-200f0 &/6FFF S=20

WN 65-300 FMM S=61RFam/40-FRFF

wn80-300m sch4018

WN 100-600 RF S=10m sch40.565.9 SO450(10A206155

pl40-16rf