Tension jacks are mainly used in bridge pre-stress tensioning operations, and are usually used in conjunction with tensioning oil pumps. Since there are many types of tension jacks, usually when choosing, they should match the type of tension anchor. Let's talk about the selection of tension jack models below.
Tension jack size selection method: multiply the number of anchorage holes by 20 tons to get the matching jack tonnage. For example: Anchorage 15-5, that is, 5*20T=100T, so the matching jack model selected for tensioning is 100T. Usually, the actual operation will choose the first-year jack.