China Cangzhou Spiral Steel Pipe Co., ltd ( zhangli623( at) gmail( dot) com) Steel Pipe Outside Diameter: 219 mm to 2850mm Steel Pipe Thickness: 5to 26mm ( 0.236-0.708 inch) Steel Grade: A, B, X42, X46, X52, X56, X60, X65, X70, Type of pipe coating: 2PE, 3PE, Epoxy powder. History: 16years, Skype: blueskyzhang0522 greencloud55 at gmail com Application: Structure steel pipe, piling pipe, Sewage and clear water transportation. Line pipe for petroleum.