yra jm13-yn (jm13-yn), pasižymintis geru našumu. Įtampa paprastai pasireiškia per tipo lizdą.
Specifikacijos ir modeliai yra tokie: bjm15-n (bm15-n) arba bjm13-n (bm13-n) (B, pirmoji plokščioji raidėinkaras
in Chinese Pinyin, representing the meaning of flat inkarasage); flat inkarasage is mainly used for Transverse Prestress of bridge deck, hollow slab and low height box girder, so as to make stress distribution more uniform and reasonable and further reduce structural thickness.
The specification and model of (fixed end inkarasage) are: jym15-n (ymp15-n) or jym13-n (ymp13-n); it is suitable for the situation of large design stress at the end or limited space at the end of the component. It is a kind of wrapped inkarasage that uses an extruder to press the extrusion sleeve on the steel strand. It is embedded in the concrete and arranged as required. After the concrete solidifies to the design strength, it is tensioned.