Dear Sir or Madam: ShengDa Metal Products Co.,Ltd. was established in the year of 1988. Since then, the exports has steadily increased year by year. Now it has become a specialized foundry of grates for trench drain. We produce grates with the type from KL.B125 to F900 according to EN1433. We also can produce according to customer's designed drawings and design according to customer's technical requirements. For details please visit our website at www.shengdazhuzao.net, or feel free to contact us. Zhao Manage Keywords:grates, manhole covers, hand wheels, pipe fittings, etc. Material: Ductile and Grey iron.