Tension Machine is a kind of feedthrough pre-tensioing. It is also called spun pile tension jack machine, pole tension machine, prestressed tension machine etc. It is the neccesary equipment to produce Pre-stressed concrete spun pile and prestressed concrete pole products. As the end of the tension rod is connected to the anchor with thread, it can be applied to various forged anchors, chilled iron anchor used for stayed-cable bridge and other similar anchors, as well as pre-tension pulling for pipes. In accordance with actual requirement. Tension jigs are normal 7parts or 5 parts for re-pretress pole and pile, including tension nut, tension rod, support plate, tension plate, connect plate, joint ring, fixed plate etc. we can customize for you. It meet the wire and pc bar's requirement. If you have any questions, please contact with us. Welcome you can visit our Factory.For inqury,Please send mail directly to us.