The axle is no stranger to car owners. As an important part of the chassis, it plays an irreplaceable role in vehicle performance. To produce an axle, in addition to raw materials, it also requires nearly 100 large and small parts such as bearings, hubs, brakes, friction discs, camshafts, bolts, washers, and adjusting arms.

These parts and the axle are the relationship between the whole and the part, and also the key factor to determine the quality and performance of the finished axle. Today, let's talk about the treasure suppliers behind Darong Axle.

1. Raw material - Tianjin steel pipe

Raw materials are the premise and foundation of axle quality. If the performance of raw materials is not up to standard, a series of subsequent production and processing will be meaningless.

Darong Car Bridge insists on selecting 20Mn2 seamless steel pipe produced by Tianjin Steel Pipe Manufacturing Co., Ltd., which has better tensile strength, yield strength, impact toughness and other properties than ordinary steel pipes. The car bridge processed on this basis has better strength, toughness, ductility, fatigue resistance and other properties.

Tianjin Steel Pipe Manufacturing Co., Ltd., also known as "Big Seamless", is a key project during the "Eighth Five Year Plan" period in China to ensure the strategic construction of national energy security. It is also a leading seamless steel pipe manufacturer in China, with an annual output of 3.5 million tons of seamless steel pipes. Its products cover oil and gas exploration, chemical industry, electric power, marine engineering, military industry, engineering machinery and other fields. It has won the nomination award of the Second China Quality Award and the National Quality Management Excellence Enterprise The first batch of national innovative enterprises and enterprises with intellectual property advantages can provide complete supporting solutions for seamless steel pipes needed in global energy development and industrial fields, and maintain long-term stable trade relations with customers in more than 100 countries and regions.

2. Bearing - Luoyang LYC Bearing Co., Ltd

The bearing plays an important role in force transmission, pressure reduction and buffering on the axle. It not only provides guidance for the steering of the wheel hub and bears axial and radial loads, but also needs to maintain the flexibility of rotation and stability of speed, and cushion the vibration from the road.

A high-quality axle not only requires the bearing to have the characteristics of high precision, high load capacity, low rolling resistance, high temperature resistance and fast heat dissipation, but also has the performance of uniform speed, low noise, high efficiency and long service life.

The bearings of Darong Axle are Luoyang axles, which are produced and supplied by Luoyang LYC Bearing Co., Ltd. (hereinafter referred to as Luoyang axles).

Founded in 1954, Luoyang Axis has accumulated more than 60 years of industry experience. Its production and marketing scale and supporting service capacity are among the top comprehensive manufacturing enterprises in China's bearing industry. Luoyang Axis has successively passed ISO9001, ISO14001, TS16949, CRCC, OHSAS18001, Jianheng, AAR of the United States, AS9100C of France, GL of Germany and other domestic and foreign authorities. It has repeatedly ranked first in the industry quality rankings. Its products are exported to the United States, Germany, Italy Australia, South Korea, India, Vietnam and more than 70 countries and regions.

3. Hub - Henan Huateng Heavy Industry

The wheel hub is the core part of the axle, also known as the rim, steel rim and tire bell, which is used to support the tire, cushion the external impact, realize the contact between the tire and the road, and ensure the vehicle driving.

The wheel hub selected for Darong Axle is produced by Huateng Heavy Industry, which has good stiffness, toughness and accuracy, good heat dissipation, high roundness, no deformation, strong high-speed balance capability, good sealing performance at high speed, reduced or avoided debris entry, extended maintenance cycle and service life, and is more suitable for users with long driving mileage.

Henan Huateng Heavy Industry Technology Co., Ltd. is located in the industrial cluster area of Suiping County, Henan Province, covering an area of more than 70 mu. Its main products include wheel hubs, brake drums, spherical nuts, positioning sleeves, axle nuts and other series. It has successfully passed the ISO/TS16949 international quality management system certification for three consecutive years. In addition to supplying Darong axle, it also maintains long-term and stable cooperation with many domestic axle plants and trailer plants.

4. Brake pad - Anhui Flying Eagle

The brake pad is the most critical safety part in the vehicle braking system. It can reduce the speed or stop the vehicle by friction with the rotating brake drum or brake disc, which is directly related to the safety of people and vehicles.

A qualified brake pad needs to have stable friction performance and high friction coefficient. In the case of continuous braking, the smaller the recession rate is, the better. At the same time, it should be able to withstand higher loads and have lower wear, so as to provide a stable and reliable braking effect for the vehicle.

Anhui Feiying brake pads are selected for Darong Axle.

安徽飞鹰汽车零部件股份有限公司成立于2005年，是国内大型专业刹车片、离合器生产制造企业之一，占地面积约120亩，目前拥有10个车间共8万平方米国际标准厂房，通过了ISO/TS16949国际质量体系认证、IATF16949质量管理体系认证、国家3C强制认证，年生产摩擦材料超10000t，其生产能力及产量均在国内同行中名列前茅。

5、制动钳——隆中控股

制动钳是车桥上的主要摩擦偶件，也是车辆制动的关键部件之一，需要具备良好的强度和刚度、尽可能高且稳定的摩擦系数及适当的耐磨性、耐热性、散热性和热容量等。

大荣车桥采用的制动钳由隆中控股集团制造，原材料选用高强合金，导热快、更耐磨，抗热衰减和水衰减的能力强，不易变形，提高行车安全。

Longzhong Holding Group Co., Ltd., located in Chengbei Industrial Zone, Yuhuan City, Zhejiang Province, was founded in 1988. In 2006, it was approved by the State Administration for Industry and Commerce to establish Longzhong Holding Group. It has been committed to the development and manufacturing of commercial vehicle brake systems and engine parts. Its products are widely used in well-known engine plants and automobile manufacturers at home and abroad, and enjoy high popularity at home and abroad. It has passed the certification of ISO/TS16949 ISO14001:2004 standard, and passed the audit of China National Accreditation Service for Conformity Assessment in 2012, and was recognized by CNAS Accreditation Service.