supply of aluminum boom.aluminum boom., 1st section: aluminum boom first section ( near to machine ) fabricated from 03mm ( 1st section ) , aluminum sheets die pressed to form tapering channels with special stiffening bends in the channels. two such c hannels then joined together with batten plates by riveting to form a tapering box section. total 8 ft. long. approx, size 200 mm square at larger end & 175 mm at smaller end. 2 bands of 25 mm wide x 300 mm long reflective ye llow tape fixed on each yellow colour band on both sides of the boom. [ warranty period: 30 months after the da te of delivery ] , 2nd section: aluminum boom second section fabricated from 2.5mm ( 2nd section ) , aluminum she ets die pressed to form tapering channels with special stiffening bends in the channels. two such channels then j oined together with batten plates by riveting to form a tapering box section, total 8 ft. long. approx, size 175 mm square at larger end & 150 mm at smaller end. 2 bands of 25 mm wide x 300 mm long reflective yellow tape fixe d on each yellow colour band on both sides of the boom. [ warranty period: 30 months after the date of delivery ] , aluminum boom third section fabricated from 1.9 mm ( 3rd section ) , aluminum sheets die presse d to form tapering channels with special stiffening bands in the channels. two such channels then joined together with batten plates by riveting to form a tapering box section. total 8 ft. approx, size 150 mm square at larger end & 125 mm at smaller end . 2 bands of 25 mm wide x 300 mm long reflective yellow tape fixed on each yellow col our band on both sides of the boom. [ warranty period: 30 months after the date of delivery ] , aluminum boom fourth section fabricated from 1.9 mm ( 4th section ) , aluminum sheets die press ed to form tapering channels with special stiffening bands in the channels. two such channels then joined togeth er with batten plates by riveting to form a tapering box section. total 8 ft. long. approx, size 125 mm square at lar ger end & 100 mm at smaller end . 2 bands of 25 mm wide x 300 mm long reflective yellow tape fixed on each ye llow colour band on both sides of the boom. [ warranty period: 30 months after the date of delivery ]