we have the maximum outer diameter of PE hollow bar(it is up to 2300mm),and we also have the maximum outer diameter of PE solid rod (it is up to 1400mm).otherwise ,more importantly ,these hollow bar and solid rod can be processed into various specifications of pipe fittings that are difficult to be processed by ordinary forming technology .The pipe fittings produced by our company have been widely used in petroleum gas ,water supply ,chemical industry ,coal mine ,dredging and other fields .