How to judge the quality of steel pipe

Steel pipes are widely used in oil, natural gas, water, steam, gas and other high, medium and low pressure fluid transmission pipelines and steel pipes for piling, bridges, buildings and other structures

First of all, we need to measure the diameter, wall thickness, length and appearance of the steel pipe to see if it meets the standard. Fake and inferior steel pipes often have pockmarks on the surface, and the material is poor. The end surface of the cut head is uneven, without metallic luster, the inner diameter fluctuates greatly, and it is easy to scratch and reduce the strength of the steel. Huayang steel pipe adopts high-frequency resistance welding and ERW technology to run through the whole link from steel plate to steel pipe to realize automatic production. High-quality, high-strength steel pipe is guaranteed, with good surface quality and superior performance.

Secondly, do the water pressure test and whether the ultrasonic flaw detection is qualified. Hydrostatic testing is for steel pipes to withstand sufficient pressure during use to avoid potential safety hazards. On-line ultrasonic flaw detection is used for weld inspection of welds to prevent steel pipes from producing pores and inclusions. It is different from many steel pipe factories on the market. Compared with relying on manual flaw detection, Centerway Steel Pipe has advanced online flaw detection equipment, which greatly improves production efficiency while ensuring quality.

In addition, we need to do mechanical property experiments and chemical analysis. Such as the inspection of the surface quality of the steel pipe, the reinforcement of the weld, the roundness of the pipe, etc., Huayang Steel Pipe will carefully inspect them one by one to see if the results meet the standards. There are different standards for steel pipes in different fields. When unqualified steel pipes are detected, Centerway Steel Pipe will repair them according to the standards. If they cannot be repaired, the steel pipes will be downgraded or scrapped. Strictly follow the requirements to ensure the quality of steel pipes and pass inspections layer by layer. Only then will it be handed over to the customer, and it will never leave the factory if it is unqualified! !