1) Standards : ISO2531, ISO4422, EN545, EN598, BS4772, AWWA C110 2) Material:GGG500-7 or Ductile iron 3) Specific types: "T" type ductile iron pipes fittings: double socket 11.25 22.5 45 90 bend DN80-2000 -all socket tee DN80-2000 -double socket tee with flanged branch DN80-2000 -flanged socket DN80-2000 Accessories of "T" type nodular cast iron pipe fittings: Gaskets according with EPDM. "K" type ductile cast iron pipe fittings: BOLTED GLAND BEND 90 11.25 45 22.5,CLASS K12 BOLTED GLAND CONCENTRIC TAPERS, CLASS K12 FLANGED AND BOLTED GLAND SOCKET PIECES, CLASS BOLTED GLAND COLLARS CLASS K12 BOLTED GLAND GHANGE COLLAR CLASS K12 BOLTED GLAND TEE, CLASS K14 BOLTED GLAND SOCKET SPIGOT BEND (90 45 22.5), CLASS 12 BOLTED GLAND SOCKET SPIGOT TEE WITH FLANGED BRANCH All above "K" type ductile iron pipe fittings specification: DN100-500 Accessories of "K" type ductile cast iron pipe fittings: Gaskets according with EPDM Bolts & Nuts in Carbon Steel grade 4.8. Standards : ISO 2531, ISO 4422, EN 545, EN 598, BS 4772, AWWA C110 Material : GGG500-7 or Ductile iron.