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| MINING BOLTS |
 Diameter of bolt rod Length of bolt rod Ø 18 mm 640 ÷ 3 270 mm  Diameter of bolt head Diameter of bolt rod Length of bolt rod Ø 36 ± 1 mm Ø 18 mm 600 ÷ 3 000 mm  Diameter of bolt head Diameter of bolt rod Length of bolt rod Ø 25 ± 0,3 mm Ø 18 mm 600 ÷ 3 000 mm |