JL/G1A-50/8 JL/G1A-70/10 JL/G1A-95/15 JL/G1A- 120/20 JL/G1A- 120/25 JL/G1A- 150/20 JL/G1A- 150/25 铝 6× 3.20 6× 3.80 26× 2.15 26× 2.38 7× 4.72 24× 2.78 26× 2.70 钢 /铝包钢 1× 3.20 1× 3.80 7× 1.67 7× 1.85 7× 2.10 7× 1.85 7× 2.10 截 面 积 铝 48.25 68.05 94.39 115.67 122.48 145.68 148.86 (mm 2 ) 钢 /铝包钢 8.04 11.34 15.33 18.82 24.25 18.82 24.25 总计 56.29 79.39 109.72 134.49 149.73 164.5 173.11 9.6 11.4 13.61 15.