The elu àgwà nkeCarbon Steel Angle Bar,kpọmkwem na ọkọlọtọ, na n'ozuzu chọrọ bụ na e kwesịghị na-emerụ ntụpọ na-eji, dị ka stratification, scarring, cracks, wdg The allowable nso nke Angle geometry deviation bụkwa kpọmkwem na ọkọlọtọ, nke n'ozuzu gụnyere ekwe. ogo, obosara akụkụ, ọkpụrụkpụ akụkụ, n'elu akụkụ, theoretical arọ na ihe ndị ọzọ, na-akọwapụta na Angle ígwè agaghị enwe ịrịba torsion.