The stardard of pipe : ISO 2351- 1998, EN545- 2009, K9
ductile iron pipe : The stardard of pipe: ISO2531- 1998, EN 545- 2002 , K9Effective length : 6M when using bulk shipment way, or about 5. 5m or 5. 7m when in 20' container shipment wayHigh strength , lighter than gray iron, good corrosion resistance , no furring small flow resistance, easy fixing, long life timeChecked by automatic inspection equipment