Ductile iron pipe
Detailed information as following :
1), Product Information
The ductile iron pipe  mainly used for conveying  water. 
The diameter is from DN80 to DN2000 Tyton, Class K7/K8/K9
According to ISO2531/4179/8179/EN545, normally work length is 6 meters,
Tyton socket-spigot,   
2), Material
* Ductile Iron GGG500-7 & 400-12  
3), Process
* centrifugal casting
4), Inspection
* Foundry in-house
* Third Party inspection available upon request