... and price 1) Structural compositionPrestressed concrete anchor system is composed of extrusion cans, extrusion springs, shims, restraint rings, spiral bars ... oil pump, a JY45-150 extruder is used to make an anchor head of extrusion cans, extrusion springs together with steel strands ... where post-tension forces are to be directly passed to the beam end.3)Structural diagram of JYM15 1. Extrusion can ( ...