45#精密鋼管的常用規格
規格 數量 規格 數量 規格 數量 12×1.5 18 73×4-4.5-5-6-7-8-9-10-12-15 50 219×30-40 65 14×1.5-2.5-3 20 76×4-4.5-5-6-7-8-9-10-12-14 60 245×8-10-14-17-20-22 105 16×1.5-2.5-4 30 83×4.5-5-10-12-14-16-18-20 30 245×25-28-30-34-40 84 18×2.3-4-5 20 89×4.5-8-10-12-14-16-18-20 40 273×7-9-12-15-18-20-25 100 20×2.5-3-5 17 95×4.5-6-8-10-12-14-16-20 50 273×30-35-38-40 50 24×2.5-3-4-5-6 25 102×4.5-5-6-7-8-10-12-14-16-20 80 299×8-12-16-20-24-28 60 25×2.5-3-4-5-6 28 108×4.5-5-6-7-8-10-12-14-18-20-22 75 299×30-32-36-38-40 70 28×3-3.5-4-5-6 30 114×4.5-5-6-7-8-10-12-14-18-20 100 325×8-12-14-18-38 120 32×3.5-4-5-6-8 40 121×4.5-5-6-7-8-10-12-14-16-20 102 325×28-32-34-38 75 34×4-5-6-8 35 127×4.5-5-6-7-8-10-12-14-16-20 95 351×10-16-20-25-40 120 36×3.5-5-6-8 30 133×4.5-6-8-12-14-16-18-20-25-30 120 355×6-18-20-25-30-40 45 38×4-5-6-7-8-9-10 33 140×5-6-7-8-9-10-12-14-16-20-22 50 377×8-12-15-20-24-28 128 39×3.5-5-8-10 30 146×4.5-6-8-12-14-16-18-20-25-30 60 377×30-37-40 60 42×3.5-4-5-6-7-8-9-10 35 152×4.5-6-8-12-14-16-18-20-25-30 60 402×10-15-20-25-30-35 70 45×3.5-4-5-6-7-8-9 40 159×4.5-6-10-12-14 80 406×10-20-25-28-35-40 110 48×3.5-4-5-6-7-8-9-10 24 159×16-18-20-22-25-30 30 426×10-12-14-16-20-25-30-35-40 97 51×3.5-4-5-6-7-8-9-10 60 168×8-10-12-14-20-25-30-35 130 450×10-12-14-16-20-25-34-40 108 56×3.5-4-5-6-7-8-9-10 58 180×8-12-16-25-30 105 480×10-12-14-16-18-20-25-30-40 95 57×3.5-5-6-7-8-9-10-12 50 180×32-34-38-40 102 500×10-12-14-16-20-25-34-40 100 60×3.5-4.5-5-6-7-8-9-12-14 60 194×6-8-12-16-20-25-30-40 140 510×10-12-14-16-20-25-34-40 110 63×3.5-4.5-5-6-7-8-9-10-12-14 40 203×6-7-10-15-20-25-30 90 530×10-12-14-16-18-20-30-40 140 68×4-4.5-5-6-7-8-9-10-12-14-16 35 203×32-36-40 70 70×4-4.5-5-6-7-8-9-10-12-15-16 40 219×6-8-12-16-18-20-25 110 45#精密鋼管材質化學成分和理論計算重量公式 45#精密鋼管化學成分：它的化學成分中含碳（C）量是0.42~0.50%，Si含量為0.17~0.37%，Mn含量0.50~0.80%，Cr含量<=0.25%。
W（kg/m）=0.02466*壁厚*（外徑—壁厚）