(1)尺寸规格见表6—40-表6—45。
表6-40冷拔无缝方形钢管的尺寸规格基本尺寸截面面积F／cm2 理论质量G／(kg／m) 惯性矩J x=J y／cm4 截面系数W x=W y／cm3 A Smm12O.81.0 O.3480 423O.2730.332O.0739O.0873O.123O.146141.01.5 0.503O.712O.394O.5590.144O.192O.2060.274161.O1.5 O.583O.832O.4580.653O.222O.300O.278O.37418 1.O1.52.O0.6630.9521.21O.5210.747O.952O.324O.4420.535O.360O.4910.59520 1.01.52.02.5O.7431.071.371.640.583O.8411.081.29O.4530.624O.763O.8740 453O.624O.763O.8742211.52O.8231.191.53O.646O.9361.20O.6120.8501.05O.556O.773O.953注：理论质量计算G=0.0157S(A+A一2.8584S)式中G——每米钢管的质量(kg／m)；A——方形钢管的边长(mm)；S——方形钢管的公称壁厚(mm).以钢管R=1.5S时，钢的密度为7.85g／cm3的计算公式。
表6-41冷拔无缝矩形钢管的尺寸规格基本尺寸截面面积F ／cm2 理论质量G／(kg／m)惯性矩截面系数A B S Jx Jy Wx wymm cm4 cm3lO 50.8l O.203O.243O.160O.191O.0074O.0082O.0239O.02700.02970.03290.04780.054712 50.8l0.2350.2830.1850.222O.00880.0099O.0388O.0449O.0354O.0395O，0646O.0748 6O.8lO.251O.3030.1970.2380.01390.0157O.04380.0509O.0462O.05240.0730O.084914 60.811.50.2830.343O.471O.223O.269O.3700.0160O.0182O.02150.06540.0767O.09730.0535O.0608O.0715O.0935O.110O.139 70.8l1.50.299O.363O.501O.2350.285O.3940.0233O.02680.0324O.0724O.08520.109O.06650.0765O.0927O.104O.1220.156 10 O.8 O.347 O.273 O.0545 O.0934 O.109 0.1338 9 30.7434.0724.1326.75346.3375.8682.4751.681.4988.43105.9115.6140 80 7891028.0031.5434.9738.2921.9824.7627.4530.05290.8320.3347.3371.7715.1794.1867.8936.472.7080.0886.8l92.92102.2113.4124.O133.8150 75 7891028.7032.3435.8739.2922.5325.3928.1630.84266,0292.6316.8338.6814.6905.3990.11069.370.9378.0384.4790.29108.6120.7132.O142.6160 65 89101132.3435.8739.2942.5925.3928,1630.8433.43220.9238.1253.4266.9975.41066.81152.01231.267.9773.2777.9882.13121.9133.3144.O153.9注：理论质量计算。
G=0.0157S(A+B一2.8584S)式中G——每米钢管的质量(k(m)；A、B——矩形钢管的长与宽(mm)；S——矩形钢管的公称壁厚(mm)。
以钢管R=1.5S时，钢的密度为7-85g／cm3的计算公式。
表6-42冷拔无缝椭圆形钢管的尺寸规格注：理论质量计算G=0.0123S(A+B一2S)式中G——每米钢管的质量(kg／m)；A、B——椭圆形钢管的长轴、短轴(mm)；S——椭圆形钢管的公称壁厚(mm)。
以钢的密度为7.85g/cm3的计算公式。
表6-43冷拔无缝平椭圆形钢管的尺寸规格基本尺寸截面面积F/cm2 理论质量C／(kg／m)惯性矩截面系数A B S Jx JY Wx Wymm cm4 cm36 3 O.8 0.103 0.0811 0.000985 O.00320 O.00557 0.01078 40.81 0.1440.1740.1130.1370.00277O.00305O.00851O.00975O.01380.0152O.02130.02449 3 0.8 O.151 O.119 0.00159 O.Ol07 O.0106 0.023710 5O.81 O.186O.226O.1460.1770.00598O.006750.0178O.02080.02390.0270O.0357O.041612 4O.810.208O.254O.164O.2000.O0444O.004910.0275O.0323O.02220.02460.0458O.0538 60.8lO.227O.277O.1780.218O.O1110.01270.03230.0380O.0369O.04240.05380.063414 7 O.811.5O.2680.3290.4690.2100.2580.368O.01840.0214O.02680.0528O.0630O.0833O.0527O.06120.07660.07550.0900O.11915 5 0.8l1.5O.266O.326O.4650.209O.256O.365O.00955O.0108O.01270.05640.067lO.0887O.03820.0434O.0510O.0752O.08950.11816 8O.81 O.3090.3800.243O.2980.0285O.0335O.08100.09690.07130.0837O.10l0.12l注：理论质量计算G=0.02719S(B一1.2327S)式中G——每米钢管的质量(kg／m)；B——六角钢管的对边距离(mm)S——六角钢管的公称壁厚(mm)。
以钢管R=1.5S时，钢的密度为7.85/cm3的计算公式。
表6-45冷拔无缝直角梯形钢管的尺寸规格基本尺寸截面面积F/cm2 理论质量G／(kg／m)惯性矩截面系数A B H S Jx Jx1 W xB W xAmm cm4 cm325 lO 30 2 1.68 1.32 1.88 6.5l 1.09 5.06 30 2520 2 1.68 1.32 1.0l 3.89 0.980 4.0l30 1.5 1.59 1.25 2.13 8.25 1.38 5.67 32 25 20 2 1.72 1.35 1.04 3.95 0.998 4.1235 20 35 1.8 2.07 1.62 3.56 12.95 1.87 8.14 30 25 2 2.09 1.64 2.00 7.75 1.56 6.36 25 30 2 2.18 1.71 2.88 10.82 1.82 7.634540 60 1.5 2.95 2.31 15.42 60.42 5.04 20.5432 50 1.8 3.01 2.36 10.90 41.09 4.13 17.4250 4035 1.5 2.27 1.78 4.55 17.42 2.51 10.3330 1.5 2.12 1.66 3.19 12.20 2.05 8.4530 1.7 2.39 1.87 3.55 13.57 2.28 9.40 35 60 2.2 4.25 3.34 21.65 81.50 6.82 28.86 45 301.2 1.77 1.392.76 10.79 l.81 7.321.42.05 1.613.16 12.36 2.07 8.391.72.47 1.943.73 14.60 2.45 9.9l注：1.冷拔无缝异型钢管适用于制作各种结构件及零件。
2.牌号及化学成分应符合GB/T699《优质碳素结构钢》及GB/T159l《低合金结构钢》的规定。