CTO.docx

1、CTO 20-93黑色冶金标准协会黑色冶金产品标准化企业和组织协会标准异形轧钢带平行翼缘的热轧工字钢技术条件。Rolled steel sections.I-beers with parallel adgus of flanges.Specifications实施日期： 1994年1月1日1 适用范围本标准规定了对非合金和低合金钢制成的热轧工字钢的要求。2 标准索引国家标准 535-88。普通质量碳素钢制成的型钢和异型钢。通用技术条件。国家标准 19281-89。高强度钢制成的轧材。通用技术条件。国家标准 27772-88。用于建筑钢结构的轧材。通用技术条件。国家标准 7566-81。进一步炼

2、制的轧材及制品。验收、标记、包装、运输和存储规范。3. 规格3.1 根据工字钢的尺寸及剖面形状分为下列3种类型：带平行翼缘的标准工字钢；带平行翼缘的宽翼缘工字钢；带平行翼缘的柱形工字钢。3.2 工字钢的横截面应与图1相符。图1图例：H工字钢高度；b翼缘宽度；t翼缘厚度；S腹板厚度；R连接半径3.3 工字钢尺寸、横截面面积、每米型材重量及轴参考值（I惯性力矩；W阻力矩；S半截面的静力矩；i惯性半径）见表1。表1工字钢尺寸、横截面面积、每米重量、轴参考值普通工字钢剖面剖面尺寸，mm截面面积，cm2每米重量，kg轴参考值hbStRI, cm4W, cm3S, cm3ix, cmI, cm4I, cm

3、3i, cm10 1100554.15.7710.328.117134.219.74.0715.95.81.2412 1117.6643.85.1711.038.725743.824.94.8322.471.4312 2120644.46.3713.2110.43185330.44.927.78.71.4514 1137.4733.85.6713.3910.543563.335.85.736.4101.6514 2140734.76.9716.4312.954177.344.25.7444.912.31.6516 11578245.9916.1812.768987.849.66.5354.41

4、3.31.8316 21608257.4920.0915.8869108.761.96.5868.316.71.8418 1177914.36.5919.5815.41063120.167.77.3781.9182.0518 2180915.389223.9518.81317146.383.27.42100.822.22.0520 12001005.581127.1621.31844184.4104.78.24133.926.82.2225 1248124581232.6825.73537285.3159.710.4254.841.12.7925 2250125691237.6629.6405

5、2324.2182.910.37293.8472.7930 12981495.581340.80326319424.1237.512.44441.959.33.2930 23001506.591346.7836.77210480.6271.112.41507.467.73.2935 1346174691452.6841.411095641.3358.114.51791.4913.8835 23501757111463.1449.613560774.843414.65984.2112.53.9540 13961997111672.1656.6200201011.156416.661446.914

6、5.44.4840 24002008131684.1266237061185.3663.216.791736.2173.64.5445 14461998121884.3066.2286991287725.118.451579.7158.84.3345 24502009141896.7676334531486.8839.618591871.3187.14.450 14921998.8122092.3872.5368451497.8853.519.971581.5158.94.1450 2496199914201011.2779.5418721688.4957.320.331844.4185.44

7、.2750 3500200101620114.2389.74784919141087.720.472140.32144.3355 15432209.513.524113.3689556822050.91165.122.162404.5218.64.6155 25472201015.524124.7597.9627902295.81301.622.442760.3250.94.760 1596199101522120.4594.6687212306.11325.523.891979198.94.0560 2600200111722134.41105.5776382587.91489.524.03

8、2277.5227.84.1270 069323011.815.224153.05120.11141873295.51913.127.313097.7269.44.570 16912601215.524164.74129.31259313644.92094.927.654556.4350.55.2670 269726012.518.524183.64144.21459134186.92392.828.195436.7418.25.44宽翼缘工字钢（H型工字钢）剖面剖面尺寸，mm截面面积，cm2每米重量，kg轴参考值hbStRI, cm4W, cm3S, cm3ix, cmI, cm4I, cm

9、3i, cm20 1194150691339.0130.62690277.3154.38.3507.167.63.6125 12441757111656.2444.16122501.8279.210.43984.3112.54.1830 12942008121872.3856.811339771.4429.512.521602.9160.34.7130 23002019151887.3868.614210947.4529.912.752033.8202.44.8235 13342498112083.1765.3171081024.4563.814.342834.1227.65.8435 234

10、025091420101.5179.7216781275.2706.114.613650.5292640 13832999.512.522112.9188.6305561595.6880.816.455575.4372.97.0340 2390300101622135.95106.7386761983.4109416.877207.1480.57.2845 1440300111824157.38123.5560722548.71412.518.888110.3540.77.1850 1482300111526145.52114.26037125051395.720.376762.4450.86

11、.8250 248730014.517.526176.34138.4718672951.41666.720.197896.4526.46.6950 349330015.520.526198.86156.18344133851912.820.489249.7616.66.8250 449930016.523.526221.38173.8952823818.92161.520.7510603.4706.96.9260 1582300121728174.491371027173529.81981.524.267668511.26.6360 25893001620.528217.41170.71262

12、014285.3243924.099257.4617.26.5360 35973001824.528252.37198.11500435026.62869.924.3811067.3737.86.6260 46053002028.528287.33225.61744585767.23305.624.6412879.3858.66.770 1692300132028211.491661724334983.72814.628.559022.9601.56.5370 2698300152328242.53190.419879156963233.628.6310381.1692.16.5470 370

13、73001827.528289.09226.92390326761.93867.228.7612422.4828.26.5670 471530020.531.528329.39258.62751387696.24426.728.914240.2949.36.5870 57253002336.528375.69294.93197938821.95099.529.1816512.31100.86.6380 178230013.51728209.71164.62054585254.73018.931.37676.7511.86.0580 2792300142228243.45191.12536556

14、405.43644.132.289928.9661.96.3990 18812991518.528243.96191.52925836642.13861.234.638278.5553.75.8390 2890299152328270.87212.63453357760.3445735.7110283.3687.86.16100 1990320162130293.8230.64460399010.95234.138.9611517.9719.96.26100 2998320172530328.88258.251637310348.25982.639.6213710856.96.46100 31

15、006320182930363.96285.758773011684.56736.240.1815903993.96.61100 4101332019.532.530400.58314.565544912940.7747040.4517828.81114.36.67柱形工字钢剖面剖面尺寸，mm截面面积，cm2每米重量轴参考值hbStRI, cm4W, cm3S, cm3ix, cmI, cm4I, cm3i, cm20 11961996.5101352.6941.43846392.5216.48.541314.4132.14.9920 22002008121363.5349.94716471.

16、6262.88.621601.4160.15.0225 12462498121679.7262.69171745.6410.710.733089.9248.26.2325 22502509141692.1872.410833866.6480.310.843648.6291.96.2925 32532511015.516102.2180.212154960.8535.410.94088.6325.86.3230 129829991418110.8087188491265.1694.713.046240.9417.57.5130 2300300101518119.7894204111360.775

17、0.613.056754.5450.37.5130 3300305151518134.78105.8215361433.7806.912.647104.4465.97.2630 4304301111718134.82105.8233811538.2852.813.177732.3513.87.5735 1342348101520139.03109.1312491827.41001.214.9910541.7605.88.7135 2350350121920173.87136.5402962302.61272.715.2213585.3776.38.8440 1394398111822186.8

18、1146.6561472850.11559.317.3418921.9950.810.0640 2400400132122218.69171.7666233331.21936.317.45224121120.610.1240 3406403162422254.87200.1780413844.42139.917.526199.51300.210.1440 4414405182822295.39231.9927734481.82513.217.7231026.21532.210.2540 54294002335.522370.49290.812029256083198.618.0237914.2

19、1895.710.12备注1 根据标准尺寸计算横截面面积、每米型材重量及参考值。钢密度取值为7.85g/cm3。2 连接半径用于确定尺寸，对于成品轧材无需检查。3 翼缘角的磨钝通过轧制工艺保证不超过3mm，对于型材无需检查。3.4工字钢（图1和图2）横截面尺寸和外形的极限偏差应符合表2中规定值。图2图例：b1拉长凸缘宽度；b2截短凸缘宽度；翼缘弯曲；f弯腰挠度；表2横截面尺寸和外形极限偏差参数尺寸极限偏差高度，h小于120（含120） 2.0120380 3.0380580+ 4.0大于580 5.0翼缘宽度（腿宽），b高度h小于120（含120） 2.0大于120 3.0腹板厚度（腰厚），S

20、小于4.4（含4.4） 0.54.46.5（含6.5） 0.76.516.0 1.016.023+ 1.5大于23 2.0翼缘厚度（腿厚），t小于6.3（含6.3） 1.06.316.0 1.516.025 2.0大于25 2.5工字钢长度，I小于7000+ 40700015000+ (40+5(1-7)大于15000+100翼缘弯曲，高度h小于120（含120）1.01202900.015b但不超过3.0大于2900.015b但不超过4.0翼缘相对于壁板的偏移高度h小于120（含120）1.51201902.51902903.0大于290且翼缘宽度b小于2203.0大于290且翼缘宽度b大于

21、2204.5弯腰挠度，f高度h小于120（含120）1.01203801.53806802.0大于6803.03.5 工字钢制造长度为：定尺长度；定尺长度，带无定尺长度；无定尺长度；无定尺范围内的限定长度。3.6 定尺长度工字钢可按以下长度制造（米）：9、10、12、15、18、24。在客户和制造商协商同意条件下可以制造范围在824之间、以及中间尺寸范围为0.1米的其它定尺长度工字钢。3.7制造带无定尺长度的定尺长度工字钢时，无定尺长度工字钢数量不得超过：批次重量的5%每米工字钢重量小于20千克时；批次重量的8%每米工字钢重量大于20千克，小于50千克时；批次重量的12%每米工字钢重量大于50

22、千克，小于110千克（含110千克）时；批次重量的20%每米工字钢重量大于110千克时。3.8无定尺长度以及长度限制在无定尺范围内的工字钢长度范围为4到24米。3.9工字钢弯度不得超过工字钢长度的0.2%。根据客户的要求生产高度大于300毫米工字钢时，其弯度不得超过工字钢长度的0.1%。3.10切面倾斜度不得造成工字钢长度超过其长度极限偏差。工字钢的长度即为端面垂直于纵轴线的切除部分的假定长度。3.11根据客户的要求，制造工字钢时，每米工字钢规定重量偏差为4%。图例示例：按国家标准 19281-89划分类别为12、强度等级为345的092号钢制20 1型剖面标准工字钢：工字钢20 1 20 - 93345 - 099 - 12 19281 - 89按国家标准 535-88划分类别为5的3号钢制30 2型剖面宽翼缘工字钢：工字钢30 2 20 - 933 - 5 535 - 88按国家标准27772-88划分类别为3的345号钢制35 1型剖面柱形工字钢工字钢35 1 20 - 93345 - 3 27772 - 88