Performance of erw pipe

Keywords:erw pipe
ERW pipe adopts cold-bending forming, and the sizing is completed by 0.6% reduction. The process temperature is basically constant at room temperature, so the outer diameter control is accurate and the fluctuation range is small, which is good for eliminating black leather buckle.

The strength index of erw pipe is in the best state, and the plasticity index is higher than the standard 33.3%. The reason is that the performance of the raw material of the erw steel pipe-hot rolled coil is guaranteed by means of microalloying smelting, refining outside the furnace and controlled cooling and rolling.

The raw material of the erw steel pipe-hot-rolled coil is highly controlled in the rolling process, and the precision of each part of the coil can be ensured.

The raw material of erw steel pipe - hot-rolled coil is made of wide and thick continuous casting billet, with thick fine-grained surface solidified layer, no columnar crystal area and shrinkage and looseness, small composition deviation and dense structure; in the subsequent rolling process The application of controlled cold rolling technology further ensures the grain size of the raw materials.

The blasting test performance of erw pipe is much higher than the standard requirement, mainly due to the high uniformity of wall thickness and uniform outer diameter of erw pipe.

ERW pipe is cold-worked and has straightening in the state of reducing the diameter, plus an infinite multiple, so the straightness is better.
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