cast iron material,flanges drillings are according to international standard,and as per your requirement is available

Size:DN50-DN1200

Body:Cast Iron, Ductile Iron

Disc:Cast Iron,Ductile,Stainless Steel

Seat:PTFE,BNR,EPDM

Stem:Stainless Steel 304/316/416

Hand Lever/Gear:Cast Iron or Ductile Iron

Woking Pressure:PN10,PN16,PN25

Flange drilling standard: BS4504 ,ANSI B16.5, DIN2501,ISO

Surface: Electric Fussion Epoxy Powder Coated

Double flange butterfly valve