ductile iron pipe fitting,according to EN545 EN598 ISO2531 BS4772,testing before shipping to ensure the perfect quality strictly Description :1) Standards: ISO2531, EN545 , EN598 , BS4772 , AWWA C110.2) material: GGG500/7 or other Ductile iron.3) coating: cement lining inside, zinc primer and bitumen painting outside; fusion bonded epoxy coating; bitumen painting inside and outside red anti-rust ...