How to distinguish the carbon steel pipe

The carbon steel pipe is closely related to human life and production activities. The production technology of the steel pipe industry not only develops rapidly, but also introduces new ones. Steel pipe production occupies an irreplaceable position in the iron and steel industry. The development of steel pipe production technology began with the rise of the bicycle manufacturing industry.1. Counterfeit pipes are prone to collapse. Folding is a variety of fold lines formed on the surface of the steel pipe, and this defect often runs through the entire product. The reason for the folding is due to the high efficiency of the shoddy manufacturers, the large amount of reduction, the generation of ears, and the folding of the folded products, which results in the folding of the folded products and the strength of the steel material. 2.Counterfeit steel pipe surface often has pockmarked phenomenon. The pockmark is due to the irregular wear and tear of the surface of the steel due to the wear of the groove. Because shoddy steel pipe manufacturers are pursuing profits, rolling slot rolling is often the most excessive.3. The surface of counterfeit steel pipes is prone to crusting. There are two reasons: (1). The shoddy steel pipe has uneven material and many impurities. (2). The inferior guide manufacturers' equipment is simple and easy to stick to steel, and these impurities are easy to produce scars after being bitten by rollers.4. The surface of the inferior material is prone to cracks because its blank is adobe and the porosity of the blank is large. The adobe is subjected to thermal stress during the cooling process and cracks are generated. After the rolling, cracks occur. 5.The shoddy steel pipe is easy to be scratched because the equipment of the shoddy steel pipe manufacturer is simple and easy to generate burrs and scratch the steel surface. Deep scratches reduce the strength of the steel.6. The shoddy steel tube has no metallic luster and is pale red or similar to the color of pig iron. There are two reasons for this. The blank is adobe. The temperature of the shoddy material rolling is not standard. Their steel temperature is measured visually, so that the rolling cannot be carried out according to the prescribed austenitic area. The performance of the steel material naturally cannot be achieved. Steel pipes are not only used for conveying fluids and powdered solids, exchanging heat energy, making mechanical parts and containers, but also being an economic steel. The use of steel pipes for the manufacture of architectural structure grids, pillars and mechanical supports can reduce weight, save 20 to 40% of metal, and allow industrial mechanized construction. The use of steel pipes to make road bridges not only saves steel and simplifies construction, but also significantly reduces the area of the protective coating and saves investment and maintenance costs. Therefore, any other type of steel cannot completely replace the steel pipe, but the steel pipe can replace some of the profiles and bars. The steel pipe has a great relationship with the development of the national economy and the improvement of human life quality, far better than other steel products. From people’s daily appliances, furniture, water supply and drainage, gas supply, ventilation and heating facilities to the manufacture of various agricultural machinery and equipment, the development of underground resources, guns and guns used in national defense and aerospace, bullets, missiles, and rockets, steel pipes cannot be separated.

A worker from a steel pipe company, which is located in China.