Design Standard API 600 BS 1414 API 6D DIN 3230 BS 1873 BS 1868 Type Bolted Bonnet, O.S. & Y Rising Spindle For Gate & Globe Valves Bolted Cover for Check Valves Wedge - Solid Taper or Flexible for Gate Disk - Plug or Rotating Type for Globe Swing &...
Russian Standard Carbon Steel 20# Pn16 Pn25 Pn40 Pn63 Gate Valve Standard Design Standard Gost Face to Face Gost 12815-80 Flange Standard Gost 12815-80 Testing Standard Gost...