EN 598 Ductile Iron Pipe (DIP 03)

According to ISO4179, select cement and sand, the cement and sand will be mixed according to the proportion, and then put into the mortar pump partly by the material divider. The mortar will be filled into the qualified pipe coming from finishing lines by automatic ration and spread along the pipe's axis direction evenly. After starting the machine, the pipe will be rotated the pipe at a high speed, and the cement mortar will be scattered on the internal wall of the pipe evenly and steadily. Then the pipe will be removed transporting and wave the remaining water in the pipe. After checking the thickness of cement lining and surface quality according to the standards, the qualified pipe will be carried to curing section to cure its linings.

Zinc: A layer of metal Zinc will be sprayed to the exterior of the pipes evenly according to ISO8179 in order to strengthen the anti-corrosion ability. The average thickness is 130kg/m2 according to the standard and also we can follow the customer's requirement.

Bitumen: There are 3 Bitumen Painting Lines. In order to increase the adherence of the bitumen sprayed and improve the product efficiency, the pipes will be warm-up by heat shed and transport to Bitumen painting procedure. The automatic bitumen spray machine is mainly comprised of high-pressure pump. Then the innoxious bitumen will be sprayed to the external surface of the pipe evenly with average thickness of 70 microns or follow the requirement of the cutomers, and transport to dry room by chain.