Tianjin Qiangbang is professional manufacturer of leaf springs and spring steel flat bars with more than 20 years of experience. Leaf spring made by our own spring steel flat bars,by which we could ensure the quality of the raw material in the first place. From stringent control of all process,through closely monitoring every step of manufacturing,constant geometry quenching,meticulous hardness control and assembly. Our spring are built to the highest standards. Shot peening,load and rate testing and fatigue testing are available where required.

Qiangbang is continuously improve and update the technology and increase to seven automated production lines with a monthly supply capacity of 500 tons. We can manufacture conventional leaf spring,parabolic leaf spring and Z type spring,etc. ,to meet customers' different needs.We make various leaf spring based on drawings ,OEM, samples and offer the drawings made by our professional engineer. We have been exporting for years to Europe,Southeast Asia,Middle East,South America and Africa and have received positive feedback from customers.