Production Capacity and Facility Overview

Production Capacity and Facility Overview

Changzhou Chengxin Metal Products’ Infrastructure

Changzhou Chengxin Metal Products Co., Ltd. boasts a state-of-the-art facility designed to meet the increasing demand for precision steel tubes. Spread over 32,000 square meters with a dedicated 22,000 square meter building area, the company has made substantial investments in cutting-edge machinery and equipment. Their focus on continuous improvement and innovation reflects their commitment to providing customers with high-quality cold drawn and ERW steel tubes.

The facility operates advanced cold drawing benches, heat treatment furnaces, honing machines, skiving-roller burnishing machines, and ERW mills. These facilities enable the production of steel tubes with exceptional dimensional accuracy, surface quality, and mechanical properties. The infrastructure supports the company’s ability to handle both standard and customized orders, ensuring fast turnaround times and consistent quality.

Advanced Hydraulic Cold Drawing Benches

The core of Chengxin’s cold drawing production lies in its two hydraulic cold drawing benches with 300-ton and 250-ton capacities. These powerful machines ensure precise reduction of tube diameter and wall thickness, enabling the manufacture of tubes with outer diameters (OD) ranging from 50mm to 325mm.

Cold drawing not only ensures excellent dimensional accuracy but also improves the mechanical strength of the tubes through work-hardening. The process allows the company to meet strict tolerance requirements, ensuring tubes are suitable for high-pressure applications such as hydraulic cylinders.

Heat Treatment Furnaces and Process Control

To enhance the mechanical properties of the steel tubes, Chengxin incorporates heat treatment processes such as annealing, stress-relieving, and normalization. The facility includes three heat treatment furnaces that are capable of processing tubes in different steel grades, such as carbon steel, carbon-manganese steel, and chrome-molybdenum steel.

Through precise control of temperature and processing times, Chengxin ensures the tubes achieve optimal tensile strength, hardness, and ductility. Heat treatment also eliminates residual stresses, improving the structural integrity of the tubes and enhancing their performance in demanding applications.

Honing Machines and Skiving-Roller Burnishing Equipment

Chengxin’s four honing machines and two skiving-roller burnishing machines provide advanced finishing capabilities. These processes are essential for achieving smooth internal surfaces with minimal roughness, which is critical for hydraulic cylinders.

• Honing:

This process ensures that the inner diameter (ID) of the tube meets precise tolerances and provides an excellent surface finish, which reduces friction and wear in hydraulic applications.

• Skiving and Roller Burnishing:

Skiving removes a thin layer from the inner surface of the tube, while roller burnishing compresses the surface, enhancing its smoothness and hardness. Chengxin’s equipment can handle tubes up to 9 meters in length, making it ideal for large hydraulic components.

The combination of these two processes ensures the internal surface meets the highest standards of precision and durability.

ERW Mills and Cold Drawing Chain Benches

Chengxin also operates two ERW mills, including one high-precision mill. These mills produce ERW tubes with round, square, rectangular, and oval shapes, offering versatility for various industries. The ERW process allows the production of steel tubes with bright, smooth surfaces or black finishes, depending on the application requirements.

A unique feature of Chengxin’s production line is its three-chain cold drawing benches, which enable the manufacturing of cold drawn ERW steel tubes. This capability allows the company to meet customer needs for enhanced precision and mechanical properties, especially in sectors requiring exact dimensions and high-quality finishes.

Production Capacity and Market Reach

With an annual production capacity of 25,000 tons of cold drawn steel tubes and 15,000 tons of ERW steel tubes, Chengxin is well-equipped to meet the needs of clients worldwide. Their ability to produce a wide range of sizes and steel grades ensures they can serve industries such as automotive, machinery manufacturing, and hydraulic systems.

The facility’s large-scale production capabilities also provide the flexibility to handle both bulk and small orders efficiently. This ensures fast delivery and a steady supply chain, reinforcing Chengxin’s reputation as a reliable partner for clients across different industries.

Adapting to Customer Needs with Customization

Chengxin offers a variety of customization options to meet the specific requirements of their clients. Beyond standard tube production, the company provides:

• Outer Diameter (OD) Machining and Polishing

• Inner Diameter (ID) Honing and Skiving-Roller Burnishing

• CNC Turning for Precision Components

These services allow Chengxin to offer complete tube solutions, from manufacturing to final finishing. The ability to customize ensures that clients receive products tailored to their precise needs, whether for hydraulic cylinders, automotive parts, or specialized machinery components.

Quality and Precision at Every Stage

Chengxin’s facility is designed to maintain high standards of quality at every stage of the production process. The use of automated cutting machines ensures that tube lengths are consistent, with tolerances controlled to within 1mm. The facility also employs multiple roller straightening machines, ensuring that straightness deviations are no more than 1mm per 1000mm.

With advanced ultrasonic and eddy current NDT systems, Chengxin can detect surface or internal defects, guaranteeing that only the highest-quality tubes are delivered to customers. These non-destructive testing methods are essential for maintaining reliability and performance in critical applications.