At present domestic polluted water and drainage pipes are mostly made of cement.But due to its unsteadily chemistry shortcoming and loose connection,it has been the principal factor of environment pollution. The coined iron pipe is not suitable for use because of discomfort construction,high price and other shortcomings,In recent years,using plastic pipes to take the place of cement pipes has been a success, newly big caliber spiral pipes have been taken into great account and been the renewal and updated products of cement pipes and coined iron pipes which has a great prospect in the market.