... or Nonstandard: Standard Structure: Butterfly Material: Casting Pressure: Medium Pressure Flange valve1) Materials: gray iron, ductile iron, ... JIS, BS, DIN, EN, ISO3) Operation: green sand casting and resin sand casting4) Surface finishes: sand blasting, oiled, ... frame, manhole covers, pump parts, hand-wheel, valve, flange, bollard, piling accessories, counterweight, iron, construction machinery parts ...