Njira ya CSP, yomwe imadziwikanso kuti compact tropical production line, ndi yotentha kwambiri ndipo inapangidwa ndi kampani ya ku Germany ya Sloman – Siemag (SMS) mu 1982. Pambuyo pake inasinthidwa kukhala chomera cha Nucor Crawfordville ku United States ndipo inasinthidwa mwaukadaulo 1989. Njira yoyamba ya CSP yosalekeza yoponya ndi kugudubuza inamalizidwa. Njira ya CSP: chosinthira kapena ng’anjo yamagetsi → ng’anjo yoyengetsa ladle → makina opyapyala opitilira kuponyera → kusungitsa kutentha kwa ng’anjo → mphero yotentha → kuzirala kwa laminar → kupopera mobisa.