Istifoda shuda, dar tarkibi sistemahoi zamin, molni-zashita va barobari potencialhoro istifoda mebарад. Baroi qabul kardan (paralel va perpendicular) provodnikhoi gumbazshavand (tokootvodho) ba fal'tsi qopiqi saranjomi.
Az poladi ba parda garm zinakht shuda bo muqaddimoti GOST 9.307-89 va poladi be zud.
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