弯头 DN 100-Sch4090ELSch5/6tatic/

DN100-Sch40 90ELSch5/6tatic/

wn150(b)-16rfsï¼ 4.5

PL 20(A)-6 RF b=3F R(b-/

法兰 WN40(B)-16RF

47021 rf600-0.6 δ=1/RJ52‚âRFRF

47021C-FM450-1.6152sF0

wn200-900rj sch80/5 RF

WN200-600 RF B=184.1

PL 100(B)-6 RF D

47021pl600(b)-6rf垫�