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技术百科

无缝管规格和型号

2018-04-19

        无缝管是一种具有中空截面、周边没有接缝的长条钢材。无缝管生产不同可分为热扎管、冷轧管、冷拔管、挤压管等

从国际和国内两个市场来看,无缝管(包括石油专用管)的现有生产能力均已大于需求。所以,今后的重点应放在充分发挥现有机组的能力,开发出高强度等级、高抗击毁、高抗腐蚀的石油管、高压锅炉管和气瓶管等产品。也是国家针对当前我国钢铁市场进行优化产品结构的内容。就是说,提高国内钢管企业的市场竞争力是加和WTO以后国内企业长期的任务和成功发展的关键。

冷拔(轧)无缝钢管的轧制方法较热轧(挤压无缝钢管)复杂。它们的生产工艺前三步基本相同。不同之处从第四个步骤开始,圆管坯经打空后,要打头,退火。退火后要用专门的酸性液体进行酸洗。酸洗后,涂油。然后紧接着是经过多道次冷拔(冷轧)再坯管,专门的热处理。热处理后,就要被矫直。钢管经矫直后由传送带送至金属探伤机(或水压实验)进行内部探伤。若钢管内部有裂纹,气泡等问题,将被探测出。钢管质检后还要通过严格的手工挑选。钢管质检后,用油漆喷上编号、规格、生产批号等。并由吊车吊入仓库中。

轧制无缝管的原料是圆管坯,圆管胚要经过切割机的切割加工成长度约为1米的坯料,并经传送带送到熔炉内加热。钢坯被送入熔炉内加热,温度大约为1200摄氏度。燃料为氢气或乙炔。炉内温度控制是关键性的问题.圆管坯出炉后要经过压力穿孔机进行穿空。一般较常见的穿孔机是锥形辊穿孔机,这种穿孔机生产效率高,产品质量好,穿孔扩径量大,可穿多种钢种。穿孔后,圆管坯就先后被三辊斜轧、连轧或挤压。挤压后要脱管定径。定径机通过锥形钻头高速旋转入钢胚打孔,形成钢管。钢管内径由定径机钻头的外径长度来确定。钢管经定径后,进入冷却塔中,通过喷水冷却,钢管经冷却后,就要被矫直。

规格型号


单位:Kg/m壁 厚





外 径33.544.555.56
322.1462.4602.7623.0523.3293.5943.847
382.5892.9783.3543.7184.0694.4084.735
422.8853.3233.7494.1624.5624.9515.327
453.1073.5824.0444.4954.9325.3585.771
503.4774.0144.5385.0495.5496.0366.511
543.7734.3594.9325.4936.0426.5787.103
573.9954.6185.2285.8266.4126.9857.546
604.2174.8775.5246.1596.7827.3927.990
63.54.4765.1795.8696.5487.2147.8678.508
684.8095.5676.3137.0477.7688.4779.174
704.9575.7406.5117.2698.0158.7499.470
735.1795.9996.8077.6028.3859.1569.914
765.4016.2587.1037.9358.7559.56310.358
896.3637.3808.3859.37810.35811.32612.281
1087.7689.02010.25911.48612.70113.90315.093
13311.17812.72514.26115.78317.29418.792
15913.42215.29017.14618.98920.82122.639
21918.60121.20923.80526.38828.95931.517
27323.26226.53629.79733.04636.28339.508
32527.75031.66535.56839.45843.33747.202
35538.89743.15847.40651.641


37741.33945.87150.39054.897


42646.77751.91357.03662.147


450






480






530






630






单位:Kg/m壁 厚





外 径6.5788.591012
324.088





385.049





425.691





456.172





506.9737.4238.2868.699


547.6148.1149.0759.538


578.0958.6329.66710.167


608.5769.14910.25910.796


63.59.1379.75410.95011.529


689.85810.53011.83812.473


7010.17910.87612.23212.89213.53914.79717.164
7310.66011.39412.82413.52114.20515.53718.052
7611.14111.91213.41614.15014.87116.27718.940
8913.22514.15615.98116.87517.75619.48322.787
10816.27017.43619.72920.85821.97324.16828.410
13320.27821.75124.66226.09827.52230.33435.809
15924.44626.24029.79131.54833.29336.74643.503
21934.06436.59841.62944.12646.61051.54361.259
27342.72045.92052.28355.44558.59664.86077.240
32551.05654.89762.54266.34670.13777.68492.629
35555.86560.07668.46072.63476.79685.082101.507
37759.39163.87372.80177.24681.67990.508108.018
42667.24672.33282.46887.51892.555102.592122.519
45071.09376.47587.20392.54997.882108.511129.621
48075.90281.65493.12298.837104.540115.909138.499
53083.91790.286102.987109.319115.638128.240153.296
63099.947107.549122.716130.281137.833152.902182.890



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