1.j bolt. Pia tunaiita (nanga bolt, msingi bolt, bolt ya ardhi) 2. Tunatumia Vifaa hivi: Chuma cha kaboni, chuma # #, 40 Cr, 35CrMo; 3.Surface Kumaliza: zinki plated au nyeusi au wazi au HDG; 4.Size: M6-M64; urefu 12mm-3000mm 5.Grade: 4.8 8.8 10.9 12.9 6.Standard: DIN, JIS, BS, ASME ...
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