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Influence of geometric dimension of seamless steel tube on relative wall thickness unevenness

浏览: Release time: 2019-11-04 10:15 Times

The thicker the seamless steel pipe wall, the higher the proportion of the number of seamless steel pipes with smaller relative wall thickness unevenness, that is, the relative wall thickness unevenness decreases, but the absolute wall unevenness increases. According to statistical data, when the wall thickness is more than 9 mm, the thick wall seamless steel tubes produced on the 140 unit have a wall thickness unevenness of less than 0.15, and the relative wall unevenness on the 114 unit is less than The proportion of 0.15 seamless steel pipes also reached 85%. This is because, although the absolute wall thickness unevenness increases, the relative value divided by the wall thickness decreases.