Rolling mill coil forming laying head with a passage or pipe with a mated layer structure

摘要

Mill coil forming apparatus ( 30) for receiving an extension material after the extension the material is rolled , with a quill ( 50 ) for rotation to support the extended passage hollow structure , such as laying head pipe ( 260 ) ( 60 ) . The entire portion or structure of the extension structure ( 260) , by inserting a layer of pipe or other of the extended hollow structure ( 263 ) to each other , are formed from mated layer surrounding the ( 261 ) . Mated the extended passage hollow structure formed from a layer , smooth known laying pipe continuously curved extension material transport path , or any other desired channel can be reproduced any three dimensional complex curved can be configured in shape .