Sml Cast Iron Pipe En877 We have a lot of ecperience in powder painting .If you have any needs ,please let me know.(as your requirement).Rainwater Fitting Cast Iron Pipes are popular using in waste and rain water, the Dinggin brand cast iron products are safe, easy to install and efficiently meet the requirements for projects. They are designed for safety, reliability and long service life. Cast iron fittings accessories for drainage and waste water pipeline system, connect with pipes through stainless steel couplings.