Coil springs for suspension technical conditions

This standard is re-established on the basis of JB/T 3823-1984 “Technical Conditions for Spiral Springs for Automobiles” and JB/T 3824-1984 “Test Methods for Spiral Springs for Automobiles”. The above two standards were abolished in 1999. Compared with JB/T 3823-1984 “Technical Conditions for Spiral Springs for Automobiles” and JB/T 3824-1984 “Test Methods for Spiral Springs for Automobiles”, the main changes are as follows:
—–Reference Standard:

—————Specific regulations on hardness and decarburization:

—————Specific regulations for surface anticorrosion test:

—————Specific regulations are made on the product sampling method:

—————Description of verticality:

—————Specific regulations are made on the pitch uniformity:

—————Tolerance of the outer diameter of the end ring.

This standard was proposed by China Machinery Industry Federation

This standard is under the jurisdiction of the National Spring Standardization Technical Committee (SAC/TC235)

Drafting organizations of this standard: China Spring Factory, Guangzhou Huade Automobile Spring Co., Ltd., Shandong Lianmei Automobile Spring Co., Ltd., Zhuji Jinbao Automobile Spring Factory

The main drafters of this standard: Jiang Ying, Long Aihua, Yang Weiming, Liu Cuiling, Jin Guoxiang.