Performance of erw pipe
Date:2019-09-12View:873Tags:Performance of erw pipe
The ERW pipe is formed by cold bending, and the sizing amount is reduced by 0.6%. The process temperature is basically constant at room temperature, the outer diameter is controlled accurately and the fluctuation range is small, which is beneficial to eliminate the black leather buckle.
The strength index of the pipe is in the best state, and the plasticity index is 33.3% higher than the standard. The reason is that the raw material performance of ERW steel tube-hot rolled coil is guaranteed by microalloying smelting, out-of-furnace refining and controlled cooling and rolling.
In the rolling process, the raw material of ERW steel tube-hot rolled coil is highly controlled, and the accuracy of each part of coil can be ensured.
The raw material of ERW steel tube-hot rolled coil is made of wide and thick continuous casting billet with thick fine grain solidification layer, no columnar crystal area, loose shrinkage, small component deviation and compact structure. The application of cold rolling technology in subsequent rolling process further ensures the grain size of raw material.
The blasting test performance of ERW pipe is much higher than the standard requirement, mainly because of the high uniformity of wall thickness and the uniformity of pipe diameter.
ERW tubes are cold-processed and straightened with reduced diameter and infinite multiple, so straightness is better.
Performance of erw pipe
Date:2019-09-13View:870Tags:Performance of erw pipe
The size of ERW pipe is reduced by 0.6% by cold bending. The process temperature is basically constant at room temperature, so the outer diameter control is accurate and the fluctuation range is small, which is conducive to eliminating the black buckle.
The elbow strength index is in the best state, and the plasticity index is 33.3% higher than the standard. The reason is that the raw material properties of ERW hot rolled coils are guaranteed by micro-alloying smelting, out-of-furnace refining and controlled cooling and rolling.
In the rolling process, the raw materials of hot-rolled steel tube coil are strictly controlled to ensure the accuracy of each part of the coil.
Hot-rolled coil sheet, the raw material of ERW steel tube, is made of wide and thick continuous casting billet. It has a thick fine grain surface solidification layer, no cylindrical crystal area and shrinkage looseness, small component deviation and compact structure. In the subsequent rolling process, the application of controlled cold rolling technology further ensures the grain size of raw material.
The blasting test performance of the elbow is much higher than the standard requirement, which is mainly due to the uniform wall thickness and external diameter of the elbow.
ERW tubes are cold-processed and straightened with a reduced diameter and an infinite multiple, so the straightness is better.
Performance of erw pipe
Date:2019-11-16View:851Tags:Performance of erw pipe
The ERW pipe is formed by cold bending, and the sizing amount is reduced by 0.6%. The process temperature is basically constant at room temperature, the outer diameter is controlled accurately and the fluctuation range is small, which is beneficial to eliminate the black leather buckle.
The strength index of the pipe is in the best state, and the plasticity index is 33.3% higher than the standard. The reason is that the raw material performance of ERW steel tube-hot rolled coil is guaranteed by microalloying smelting, out-of-furnace refining and controlled cooling and rolling.
In the rolling process, the raw material of ERW steel tube-hot rolled coil is highly controlled, and the accuracy of each part of coil can be ensured.
The raw material of ERW steel tube-hot rolled coil is made of wide and thick continuous casting billet with thick fine grain solidification layer, no columnar crystal area, loose shrinkage, small component deviation and compact structure. The application of cold rolling technology in subsequent rolling process further ensures the grain size of raw material.
The blasting test performance of ERW pipe is much higher than the standard requirement, mainly because of the high uniformity of wall thickness and the uniformity of pipe diameter.
ERW tubes are cold-processed and straightened with reduced diameter and infinite multiple, so straightness is better.
