INTRODUCTION

Volute, helical, and laminated springs are all types of mechanical springs used in various applications to store and release mechanical energy. Volute springs are good for twisting things, like in clocks. Helical springs, whether they push or pull, are used in many places to soak up and save energy. Laminated springs, made from stacked steel pieces, are great for heavy tasks, especially in vehicle springs.

To ensure the product quality of volute, helical & laminated springs, the Bureau of Indian Standards (BIS) has made it mandatory for manufacturers to undergo BIS registration and obtain the BIS ISI mark before selling it in the market. Manufacturers can use the ISI Mark on their products only after obtaining a license from BIS that is granted after BIS registration. The presence of the ISI mark on a product indicates that it complies with BIS's stringent quality standards.

IS 3431: 1982 covers steel tubes for structural purposes. This standard specifies the requirements for hot rolled steel bars and flats used in the production of volute, helical, and laminated springs for automotive suspension.

REQUIREMENTS FOR IS 3431:1982

1.     Steel must be of the five grades as specified in the standard. IS 8910:1978 specifies the general requirements for material supply.

2.     Steel must be produced using open-hearth, electric, or a combination of these processes.

3.     For any given size of finished steel product, the size of ingots, billets, or continuous cast billets shall be such that a minimum reduction ratio of 16:1 from the minimum cross-sectional area of that ingot or continuous cast billets to the maximum cross-sectional area of the product is ensured.

4.     Steel in accordance with this standard must be supplied in one of the modes of delivery specified in this standard. Material must be free from harmful defects such as pipe, heavy scale, rust, blisters, laminations, cracked edges and seams, and other rolling defects that can reduce spring durability.

5.     Marking and packing must be done in accordance with Indian standards.

6.     Each bar shall be marked with the manufacturer's name or trade mark, grade, and the cast number or any other identification mark that allows the steel to be traced back to the cast from which it was made.

7.     Standard Mark (ISI Mark) may also be applied to the material.

8.     Manufacturers must obtain a BIS license from the Bureau of Indian Standards to use a standard mark (ISI Mark).

TESTS        

Tests shall be performed as per specified standard.

·       Chemical composition

·       Harden ability

·       Mechanical properties

·       Freedom from defects

·       Straightness

·       Dimensions and Tolerance

Process for BIS ISI Mark Certification

To know the process in detail, please visit:

• ISI Mark Certification for Domestic Manufactures
• ISI Mark Certification for Foreign Manufactures

Under BIS Registration Products ISI and CRS

• BIS CRS Registration For IT Products List
• ISI Mark Registration For ISI Products List

Benefits of BIS Certification

The BIS registration provides the following benefits:

1.     Increase sales: BIS-registered products are more likely to be of higher quality and attract more customers.

2.     Reduce the amount of money spent on quality maintenance: Upon getting certification, there's no need to follow separate quality guidelines for products.

3.     Enhance product credibility and reduce environmental risk: BIS-certified items are genuine and trustworthy because they work really well and last a long time.

4.     Ensure the highest level of quality and dependability: The presence of a BIS registration number implies that the product is of high quality and dependability.

5.     Ensure the organization’s expansion: BIS certification boosts your product’s reputation, resulting in significant growth and market exposure.

CONCLUSION

Volute, helical & laminated springs has been included in the mandatory ISI Certification Scheme under the IS 3431:1982 standard. Manufacturers cannot import, export, or sell this product in the Indian consumer market without the ISI Mark imprinted.

If you need any assistance with BIS ISI registration for volute, helical & laminated springs or ISI mark certification for volute, helical & laminated springs, you can reach out to Evtlindia. We provide assistance with all documentation formalities with India's BIS office, ensuring a smooth and hassle-free registration experience, guiding you through the entire process from start to finish.

You can contact us via email at contact@evtlindia.com or by phone at 9560935898. Feel free to get in touch with us anytime for the support you need.