BIS Quality Control Order for Cranked - Link mill chains of welded construction attachments and sprockets
IS 13927: 2005/ ISO 6972: 2002
CONCERN MINISTRY: Bureau of Indian Standards (BIS)
Dear Viewer,
Important update regarding the Indian Standard applicable to all existing licence holders, new applicants, manufacturers, importers, distributors, and sellers of Cranked-Link Mill Chains of Welded Construction, Attachments and Sprockets.
Cranked-Link Mill Chains QCO Overview
The Ministry of Commerce and Industry, Department for Promotion of Industry and Internal Trade (DPIIT), Government of India, has issued the draft Chains and Sprockets (Quality Control) Order, 2025.
Under this notification, Cranked-Link Mill Chains of Welded Construction, Attachments and Sprockets covered under IS 13927:2005 / ISO 6972:2002 have been brought under mandatory BIS certification requirements.
As per the notification, manufacturers of Cranked-Link Mill Chains of Welded Construction, Attachments and Sprockets shall ensure that their products conform to the specified Indian Standard and bear the Standard Mark (ISI Mark) under a valid BIS licence granted in accordance with Scheme-I of Schedule-II of the BIS (Conformity Assessment) Regulations, 2018.
What is IS 13927:2005 / ISO 6972:2002
IS 13927:2005 / ISO 6972:2002 is the Indian Standard for Cranked-Link Mill Chains of Welded Construction, Attachments and Sprockets. The standard specifies the requirements relating to design, dimensions, construction, materials, attachments, sprockets, performance characteristics, testing, inspection, marking, and quality control of welded cranked-link mill chains used in industrial conveying, milling, material handling, and heavy-duty conveying applications.
The standard ensures that welded mill chains and associated sprockets meet prescribed quality, strength, durability, and operational performance requirements for reliable service in demanding industrial environments.
Implementation Dates Under QCO
The Quality Control Order will come into force from the following dates:
| Category | Implementation Timeline |
| General (Other than Micro and Small Enterprises) | 6 months from the date of notification in e-Gazette |
| Small Enterprises | 9 months from the date of notification in e-Gazette |
| Micro Enterprises | 12 months from the date of notification in e-Gazette |
Key Requirements Under the QCO
- Products must comply with the requirements specified under IS 13927:2005 / ISO 6972:2002.
- Manufacturers must obtain BIS certification before selling products in the Indian market.
- Certified products must bear the ISI Mark.
- BIS will act as the certification and enforcement authority for these products.
- Non-compliance may result in penalties under the provisions of the BIS Act, 2016.
Exemptions Under the Order
The QCO does not apply to:
- Products manufactured domestically for export purposes.
Certification and Enforcement Authority
The Bureau of Indian Standards (BIS) shall act as the certification and enforcement authority for Cranked-Link Mill Chains of Welded Construction, Attachments and Sprockets covered under this Quality Control Order.
Penalty for Non-Compliance
Any person or manufacturer violating the provisions of this Order shall be punishable under the provisions of the Bureau of Indian Standards Act, 2016.
| Title | Issue Date | View Order |
| QCO Order | 11/07/2025 | View |
Bureau of Indian Standards
Manak Bhawan 9, B.S. Zafar Marg, New Delhi - 110002
Important Disclaimer
The contents provided in this update are solely meant for general informational purposes. Before you make decisions or take action based on the information provided, it is advised to seek professional legal consultation.