Mitengo nthawi zambiri imakhala ndi mawonekedwe monga lathyathyathya, yozungulira, hexagonal,
Asme B36.19M ndiye wofanana ndendende ndi mapaipi achitsulo osapanga dzimbiri, zomwe zimafotokoza kukula kwake, kulolerana, ndi zomwe amapanga maenda owala komanso osaka.
Mapaipi 254 amatha kupirira kupsinjika kwa makina opanga masewera olimbitsa thupi komanso aloy 254 osuma amagwira ntchito yopanikizika kwambiri komanso malo okhala.
254 Oseketsa ndi chitsulo chosapanga dzimbiri lomwe limadziwika kuti limagwiritsidwa ntchito pogwiritsa ntchito gawo lomwe limalumikizana ndi madzi am'madzi ndi m'madzi amchere komanso osuta. Inapangidwa kuti igwiritsidwe ntchito m'madzi am'madzi ndi zina za chlorine-zokhala ndi ma chlorine omwe ali ndi makampani ogulitsa komanso gulu la gulu lamphamvu kwambiri. Kuchulukitsa kwa zinthu za molybdenum ndi kuwonjezera kwa nayitrogeni kumapereka kukana kwabwino kwambiri popewa ndi kupindika.