Precision seamless steel pipes and ordinary seamless steel pipes are two common types of steel pipes that differ in production, use, and performance. The following will introduce their differences from several aspects.

The production process is different

The production process of precision seamless steel pipes is more complicated than ordinary seamless steel pipes. The production of precision seamless steel pipes requires high-precision cold drawing or cold rolling processes, and multiple passes of cold drawing and cold rolling to ensure the dimensional accuracy and surface finish of the pipes. The production of ordinary seamless steel pipes is relatively simple, mainly using hot rolling or cold rolling processes to produce steel pipes by heating and rolling.

Different materials

The material of precision seamless steel pipe is of higher quality than ordinary seamless steel pipe. Precision seamless steel pipes are made of high-quality carbon steel, alloy steel, or stainless steel with higher strength, corrosion resistance, and wear resistance. Ordinary seamless steel pipes usually use ordinary carbon steel or low alloy steel and other materials, and their strength and corrosion resistance is relatively low.

Dimensional accuracy is different

Since the precision seamless steel pipe adopts a high-precision production process, its dimensional accuracy is higher than that of ordinary seamless steel pipes. The dimensional accuracy of precision seamless steel pipe can reach about 0.05mm, while the dimensional accuracy of ordinary seamless steel pipe is generally about 0.1mm.

Surface finish varies

The surface finish of precision seamless steel pipes is higher than that of ordinary seamless steel pipes. Since the precision seamless steel pipe adopts cold drawing or cold rolling process, its surface finish can reach about Ra0.8, while the surface finish of ordinary seamless steel pipe is generally around Ra1.6.

Different uses

The uses of precision seamless steel pipes and ordinary seamless steel pipes are also different. Precision seamless steel pipes are mainly used to manufacture high-precision mechanical parts, instruments, meters, auto parts, etc., and have high requirements for dimensional accuracy and surface quality. Ordinary seamless steel pipes are mainly used to transport liquids, gases, etc., and have relatively low requirements for dimensional accuracy and surface quality.

Different prices

Due to the higher production process and quality requirements of precision seamless steel pipes, their price is higher than that of ordinary seamless steel pipes. Generally speaking, the price of precision seamless steel pipes is more than twice that of ordinary seamless steel pipes.

To sum up, precision seamless steel pipes and ordinary seamless steel pipes are different in production, use, and performance. When selecting steel pipes, it is necessary to select the appropriate steel pipe type according to the specific use and requirements to ensure that the quality and performance of the product can meet the actual needs.

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