BIS CERTIFICATION FOR CRANKED-LINK DRAG CHAINS OF WELDED CONSTRUCTION IS 13926

Published Date: Dec 07, 2025 4 min Read

BIS Certification is mandatory for cranked-link drag chains of welded construction, along with attachments and sprockets, as per IS 13926:2005. These chains are essential components in bulk material handling systems, conveyors, and heavy-duty industrial applications where they are subjected to continuous operation under high loads, abrasive environments, and severe working conditions. BIS certification ensures that these chains and sprockets conform to stringent quality, durability, and safety standards, enabling reliable and efficient operation in demanding industrial settings. This Indian Standard lays down the requirements for cranked-link drag chains of welded construction and their associated attachments and sprockets. These chains are specifically designed for drag conveyors and similar machinery used in industries such as steel, cement, mining, sugar, and power plants. The standard specifies design, material selection, dimensions, and performance requirements to ensure that chains and sprockets can handle heavy-duty loads while maintaining operational efficiency.

IS 13926:2005 – Cranked-Link Drag Chains of Welded Construction, Attachments and Sprockets

The scope of IS 13926:2005 includes detailed specifications for link geometry, pitch, pin size, plate thickness, and sprocket tooth profiles. It also defines requirements for attachments used in conveyors to ensure compatibility and reliability. By setting clear guidelines, the standard ensures uniformity, interchangeability, and safe operation across a wide range of industrial applications. To achieve BIS certification, cranked-link drag chains, attachments, and sprockets must undergo rigorous testing. These tests include tensile strength, elongation, fatigue resistance, wear resistance, hardness checks of pins and plates, and dimensional accuracy. Weld quality and integrity of attachments are also tested to ensure durability and safety during continuous operation. Sprockets are tested for precision in tooth profiles, hardness, load-bearing capacity, and resistance to wear under harsh operating conditions. These compliance checks ensure that the products can withstand extreme industrial environments, including high temperatures, abrasive materials, and continuous heavy loads. Certified products deliver consistent performance, minimize the risk of operational failures, and enhance the overall efficiency of material handling systems.

Benefits of BIS Certification for Cranked-Link Drag Chains and Sprockets

BIS certification under IS 13926:2005 provides manufacturers with a competitive edge by validating product quality, reliability, and safety. It helps build trust with industrial clients, OEMs, and global buyers while facilitating access to wider markets. For end-users, certified drag chains and sprockets ensure smoother conveyor operations, reduced maintenance costs, extended service life, and safer handling of bulk materials in demanding industries.

Key highlights

Product Name	Cranked-Link drag chains of welded construction, Attachments and sprockets
Applicable Indian Standard	IS 13926:2005
Applicable Certification Scheme	Product Certification Scheme (ISI Mark Scheme) Scheme 1 - Schedule 2
Compliance Requirement	Mandatory
Quality Control Order	-
Scope as per Standard	This International Standard specifies the characteristics of cranked-link 1 ) drag chains of welded construction suitable for conveying bulk materials, together with associated attachments and chain sprockets.

Note

For Detailed Information about the Procedure for BIS ISI Certification, Visit :

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Procedure for Domestic Manufacturer
Procedure for Foreign Manufacturer

Timeline for BIS Certification

The timeframe for obtaining BIS certification depends on whether the manufacturer is Indian or foreign:

For Indian Manufacturers – The certification process generally takes about 30 days under normal conditions.
For Foreign Manufacturers – The process usually takes around 180 days, due to additional inspections, sample testing, and regulatory compliances.

Conclusion

BIS certification under IS 13926:2005 ensures that cranked-link drag chains of welded construction, attachments, and sprockets are manufactured and tested to meet the highest benchmarks of quality, durability, and safety. Manufacturers who comply with this standard demonstrate their ability to supply robust, precision-engineered components, while end-users benefit from safe, efficient, and long-lasting industrial operations.
Partner with Aleph INDIA for expert guidance and end-to-end support in obtaining BIS certification for cranked-link drag chains, attachments, and sprockets under IS 13926:2005. With our complete compliance solutions, manufacturers can achieve smooth certification, strengthen their market position, and deliver products trusted across industries worldwide.