Steel pipes are widely used in the transportation of high, medium, and low-pressure fluids such as oil, natural gas, water, steam, and gas, as well as in structural steel pipes for pile driving, bridges, and buildings. Good quality steel pipes benefit society, but as the steel pipe industry rapidly develops, there are also counterfeit products that appear on the market. So, how can we judge the quality of steel pipes?

Steel pipes

Firstly, we need to measure the diameter, wall thickness, length, and appearance of the steel pipes to ensure they meet the standard. Counterfeit steel pipes often have a rough surface and poor material quality. The end faces are uneven, with no metallic luster, and the inner diameter fluctuates significantly, making it easy to scratch and reduce the strength of the steel. Haihao Group uses high-frequency resistance welding and ERW processes to ensure automated production that produces high-quality, high-strength steel pipes with excellent surface quality and performance.

Secondly, hydraulic testing and ultrasonic flaw detection are necessary to ensure the steel pipes can withstand sufficient pressure during use to avoid safety hazards. Online ultrasonic flaw detection is used to inspect the welding of the seams to prevent problems such as air holes and inclusions in the steel pipes. Compared to many steel pipe factories that rely on manual flaw detection, Haihao Group’s online flaw detection equipment is advanced, ensuring quality while greatly improving production efficiency.

Steel pipes

In addition, we need to conduct mechanical property testing and chemical analysis. Haihao Group carefully inspects the surface quality of the steel pipes, the height of the weld seams, the roundness of the pipes, and other factors to ensure they meet the standards of different fields. If an unqualified steel pipe is detected, Haihao Group will repair it according to the standards. If it cannot be repaired, it will be downgraded or scrapped. We strictly follow the requirements to ensure the quality of the steel pipes, and only after passing layer-by-layer inspection will they be delivered to customers. Unqualified products will never leave the factory.

At Haihao Group, we prioritize quality, and we believe that our commitment to quality is what sets us apart from other steel pipe manufacturers. Our steel pipes are of the highest quality and will always meet your standards. Choose Haihao Group for reliable and high-quality steel pipes.