严 Quality Control, Perfect Fit - Introduction to Qianyi Metal Precision Steel Pipe Products

Strict Quality Control, Precise Adaptation - Introduction to Qianyi Metal Precision Steel Pipe Products

In the field of industrial manufacturing, the precision and stability of precision steel tubes are crucial for the effectiveness of equipment operation and the lifespan of products. Liaocheng Qianyi Metal, with years of dedication to the metal products industry, leverages the industrial advantages of the Wangzhuang Industrial Park in the Liaocheng Economic Development Zone. Adhering to the principle of "stable production and strict quality control," the company relies on standardized processes and professional equipment to produce precision steel tubes that meet standards and offer reliable performance, positioning itself as a reliable source supplier in the industry.

Stable quality is supported by robust production capabilities. Qianyi Metal is equipped with multiple high-precision cold rolling tube machines and precision rolling production lines, and has introduced a 3-roll high-precision precision rolling machine, which can control product precision within 0.03 microns, meeting the industry's demand for high-precision tubular materials. To ensure full-process quality control, the company has equipped itself with comprehensive physical and chemical testing equipment and established a standardized production inspection process: After the billets enter, they are first pre-inspected, then re-inspected after peeling, followed by subsequent pre-processing steps such as heating, piercing, pickling passivation, and finishing, and finally through cold rolling, degreasing, cutting, and final product inspection. This process includes an additional pickling and cold rolling step compared to ordinary seamless tubes, effectively reducing size deviation and surface defects. Currently, the company's annual output of cold-rolled precision seamless steel tubes reaches 10,000 tons, allowing for stable handling of bulk orders while also catering to small batch customization needs, balancing production capacity and supply flexibility.

Product adaptability is demonstrated through its extensive specifications and compliant materials. Qianyi Metal Precision Steel Pipe offers a comprehensive range, capable of producing pipes with diameters φ6 - φ219mm and wall thicknesses of 1 - 38mm. Some series can extend to seamless steel tube specifications of φ6 - 426mm×15 - 80mm, with φ18～φ121×2～25mm being the core standard sizes, directly compatible with most general industrial applications. In terms of material selection, it includes high-quality carbon steels such as 10#, 20#, 35#, 45#, low-alloy steels like 16Mn, 27SiMn, Q345B, and alloy structural steels such as 20Cr, 40Cr, GCr15, 42CrMo, all using standardized raw materials to meet the performance requirements of different industrial applications.

In terms of precision, the inner hole of the product can reach H7 - H10 levels, with an inner hole roughness of Ra≤0.63um and straightness of ≤0.3mm/m. Some products have an outer diameter tolerance controlled between 0.03 - 0.05mm, with overall tolerances maintained at 2 - 8 thou. This meets the basic precision requirements for mechanical processing and hydraulic systems without the need for additional complex processing.