Mtanda wofanana, makamaka kwa nthawi yaukadaulo, anayi chifukwa cha zoukira za chitoliro, zolumikizira mapaipi, zomwe zimagwiritsidwa ntchito pa bomba lalikulu mpaka chitoliro cha nthambi.
A105 adzagonjera kutentha (kuwongolera, kusinthana, kusanza, kapena kuwazimitsa). A105 adzagwirizana ndi kaboni, manganese, phosphorous, sulfuro, silicon, mkuwa, Nickel, Chromium, Molybdenum ndi Calbude Pafupi ndi Vanbdenuum ndi Canadium.
Gulu la Astme A234 GR WPB Gawo limagwiranso ntchito bwino mu chrogenic mikhalidwe. Amawonedwa ku Petrochemical, mafuta, ndi magesi. Zinthu za A234 WPB zimapangidwa ndi mphamvu zapamwamba kwambiri. Zizindikiro za Astme Astme A234 Zikakhala ndi Maphunziro ambiri, monga wpb, wpc, wpc, wp5, wp91, wp12, wp22, wp82, wp81. Mu pulogalamuyi ya WILRARD WPB ndizinthu zodziwika bwino zomwe zimagwiritsidwa ntchito ngati ma picheli apamwamba. W amatanthauza FLDOD A CSOVY A234 WPB ndi yopangidwa ndi chitsulo cha kaboni ndipo imalimba. Ilinso ndi 240mpa wocheperako mphamvu ndi mphamvu zochepa za 585mma.