Ma tank obwezeretsa olimba a Fiberglass (FRP) amagwiritsidwa ntchito kwambiri kuti azikhala otetezeka pamsewu, panjanji kapena poyendetsera madzi pazinthu zankhanza, zowonongeka kapena zowonera.
Ma tank osungira a Fibrellass nthawi zambiri amakhala akasinja okhala ndi zomata. Amapangidwa ndi ma resin ndi fiberglass ndipo kapangidwe kake kamayendetsedwa ndi kompyuta pogwiritsa ntchito helix pakutsitsa kapena ndikuyika-manja pazida zapadera.