Precision in Every Detail—How Jiangyin Carridea Redefines Cold-Drawn Tube Quality In the world of industrial manufacturing, every component plays a crucial role, and the quality of cold-drawn tubes di

In the world of industrial manufacturing, every component plays a crucial role, and the quality of cold-drawn tubes directly affects the performance and service life of the entire equipment. Jiangyin Carridea Technology Co., Ltd., with its unwavering pursuit of precision and quality, has redefined the standards of cold-drawn tube manufacturing, becoming a shining star in the industry. For more than a decade, the company has been dedicated to the research, development, and production of high-precision cold-drawn hydraulic cylinder tubes, integrating advanced technology, exquisite craftsmanship, and strict quality control to create products that exceed customer expectations.

The pursuit of precision starts from the selection of raw materials. Carridea firmly believes that high-quality raw materials are the foundation of high-quality products. Therefore, the company has established long-term and stable cooperative relationships with well-known domestic steel mills, selecting high-grade seamless steel pipes that meet national standards as the raw materials for cold-drawn tubes. These raw materials undergo strict inspection before entering the factory, including chemical composition analysis, mechanical performance testing, and surface quality inspection, to ensure that they meet the requirements of subsequent processing. This rigorous raw material control lays a solid foundation for the production of high-precision cold-drawn tubes.

In terms of processing technology, Carridea has always been at the forefront of the industry. The company has introduced a complete set of advanced production equipment from home and abroad, including hydraulic cold-drawing units, boring-rolling integrated units, polishing machines, and heat treatment equipment. These equipment not only improve production efficiency but also ensure the precision and stability of products. For example, the hydraulic cold-drawing unit adopts an independently developed control system, which can accurately control the drawing speed, force, and temperature, ensuring that the size and shape of the tubes meet the design requirements. The boring-rolling integrated process effectively improves the surface finish and dimensional accuracy of the inner hole of the tubes, making the inner hole size accuracy reach H7-H9, which is far higher than the industry average.

To solve the common problems in the industry such as uneven surface roughness and poor straightness of cold-drawn tubes, Carridea has developed a series of core technologies through continuous research and practice. The company has optimized the heat treatment process, adopting a scientific quenching and tempering process to improve the strength and toughness of the tubes, making the tensile strength of 27SiMn cold-drawn tubes reach more than 980MPa and the yield strength reach 650MPa, which can fully adapt to heavy-load working conditions. In terms of straightness control, Carridea has adopted three key processes, effectively controlling the straightness of the tubes within 0.2-0.25mm/m, solving the problem of cold-drawn tubes “going crooked” that has long plagued the industry.

Quality inspection is another key link in Carridea’s pursuit of excellence. The company has established a comprehensive quality inspection system covering the entire production process, with more than 30 inspection procedures. Specialized inspection equipment such as internal hole straightness measuring instruments, surface roughness testers, and hardness testers are used to conduct strict inspections on each batch of products. From raw materialto finished product delivery, every link is subject to rigorous quality control, ensuring that every cold-drawn tube leaving the factory meets the highest quality standards. In addition, the company can provide third-party inspection reports and material traceability certificates for all batches of products, giving customers full confidence in product quality.

Carridea’s commitment to quality has not only won the trust of customers but also earned the company a good reputation in the industry. The company’s products are widely used in construction machinery, hydraulic machinery, rail transit, military equipment, and other fields, and have been exported to many countries and regions around the world. With its unwavering pursuit of precision and quality, Carridea is constantly redefining the standards of cold-drawn tube manufacturing, and making unremitting efforts to provide better products and services for the global industrial manufacturing industry.