弯头 DN 50-Sch4090EL

DN 50-Sch40 90EL

NB/T47023 FM600-1.6 δ0=12

HG/T20615 SO600-150RF/

PL80(B)-6RJh0-125M0)-10 rf06)-40 RF60/u0083/u0FF-16 RF0f hH=A)-16 RF=120 d=158.60F S

WN80A-25RFF 21/

WN80-300 RJ S005-ScRF5RF1

so15-600RF

PL150(B)-25 MFM00/RF8m=1/CH40SF1811/5/5

so5