Ziziphi iinkcukacha kunye neemodeli ze-rebar yebanga lesithathu?Okwangoku, ulwahlulo lwentsimbi yesithathu lusekelwe ikakhulu kwi-diameter ye-nominal.Iimpawu eziphambili ziyi-8, 10, 12, 14, 16, 18, 20, 25, 30, 32, 40, 50, njl. Ukongeza, ukuba kukho ezinye iinkcukacha kwikhontrakthi, Ukuba ...
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