BIS Certification for Asbestos–Cement Pipes and Fittings IS 6908:1991

To ensure consistent quality and public safety, the Bureau of Indian Standards (BIS) has made certification mandatory under IS 6908:1991. Obtaining BIS for Asbestos–Cement Pipes is essential for manufacturers who wish to supply compliant products in the Indian market.

Understanding IS 6908:1991 

IS 6908:1991 is the Indian Standard that defines technical requirements for asbestos–cement pipes and fittings intended for sewerage and drainage applications. The standard specifies parameters such as raw material composition, dimensions, tolerances, mechanical strength, workmanship, and testing procedures. Compliance with BIS for IS 6908:1991 ensures that pipes and fittings are capable of withstanding underground loads, moisture exposure, and long-term operational conditions without premature failure. 

Manufacturers must obtain the ISI Mark for IS 6908:1991 before manufacturing, selling, or distributing these products within India.

Importance of BIS Certification for IS 6908:1991 

Sewerage and drainage systems are critical public utilities, and any failure can result in health hazards, environmental contamination, and infrastructure damage. BIS for IS 6908:1991 ensures that asbestos–cement pipes and fittings meet prescribed quality, performance, and safety benchmarks.

Key benefits of BIS Certification include: 

• Assured quality and consistent product performance
• Mandatory regulatory compliance under applicable Quality Control Orders
• Eligibility to participate in government and municipal tenders
• Increased market credibility through ISI-marked products
• Long service life and reduced maintenance requirements

The ISI Mark for IS 6908:1991 serves as a visible symbol of conformity and reliability for buyers and project authorities.

Scope of Asbestos–Cement Products Under BIS

While IS 6908:1991 specifically applies to asbestos–cement pipes and fittings used for sewerage and drainage, BIS also regulates other asbestos–cement products. For instance, BIS Certification for Asbestos Cement Flat Sheets and ISI Mark Certification for Asbestos Cement Flat Sheets are mandatory under separate Indian Standards. Asbestos Cement Flat Sheets are commonly used in roofing, wall cladding, and industrial structures, and they must comply with BIS quality norms similar to piping products.

Manufacturers dealing with multiple asbestos–cement products often apply for BIS licenses for both pipes and flat sheets to ensure complete regulatory compliance.

Key Technical Requirements Under IS 6908:1991

To obtain BIS for Asbestos–Cement Pipes and Fittings for Sewerage and Drainage IS 6908:1991, manufacturers must meet several technical requirements, including:

• Controlled composition of cement and asbestos fibers
• Compliance with specified dimensions and tolerances
• Successful completion of crushing strength and bending tests
• Limits on water absorption and permeability
• Proper workmanship, surface finish, and mandatory ISI marking 

All product tests must be conducted either in approved in-house laboratories or BIS-recognized external labs. 

Step by Step BIS Certification Process for Domestic & Foreign Manufacturers:

The ISI Certification for Asbestos Cement Pipes and Fittings for Sewerage and Drainage procedure generally consists of the following steps, although it varies slightly for domestic and foreign manufacturers:

For Foreign Manufacturers:

• Choose a Representative From India : To complete the FMCS registration process, a foreign producer must designate an Indian representative with a legitimate business presence in India.
• Online Application Submission: The representative uses the BIS portal to submit an application, making sure that all the information is correct.
• Sample Testing: To ensure compliance with IS 6908:1991, samples are tested in a laboratory recognized by BIS.
• Submit Complete Application:  The application is submitted online or in physical copy, together with the necessary paperwork and test results.
• BIS Verification: In addition to reviewing paperwork, the BIS may inspect factories.
• Grant of License: The BIS issues a license that permits the use of the ISI mark following a successful verification.  

For Domestic Manufacturers:

• Apply Online:  To start the registration procedure, domestic manufacturers apply directly on the BIS portal.
• Sample Testing: Similar to outside producers, samples are examined in a lab accredited by BIS. 
• Submit Application: The BIS receives a comprehensive application that includes test reports.
• Verification: The production plant may be inspected and documentation reviewed by the BIS.
• License Grant: The BIS grants permission to use the ISI mark following a satisfactory verification.

Essential Documents Required for BIS Certification for Asbestos - Cement Pipes And Fittings For Sewerage And Drainage

The list of documents required for BIS Registration for Asbestos Cement Pipes and Fittings for Sewerage and Drainage are as follows: 

• Filled CDF/CCL form
• Duly filled BIS application form
• Business License of manufacturing unit
• Scope of Business License
• ISO certificate of the manufacturer
• Marking Label/Details of Marking on the product
• Authorization letter
• Trade Mark Certificate
• Trademark Authorization Letter
• Authorized Indian Representative company registration proof in India (for foreign manufacturers)
• Photo ID of Authorized Indian Representative/Authorized Signatory
• Technical Specification Sheet of Product
• Test Reports from BIS recognized laboratories
• Manufacturing Process Documents
• Factory Location Documents

Why Role of BIS and ISI Mark Consultants ?

Due to strict technical requirements and inspection procedures, many manufacturers seek professional assistance. A BIS Consultant for IS 6908:1991 supports manufacturers with documentation, application filing, sample testing coordination, and inspection readiness. Similarly, companies manufacturing flat sheets often engage an ISI Mark Consultant for Asbestos Cement Flat Sheets or a BIS Consultant for Asbestos Cement Flat Sheets to ensure smooth and timely certification.

Experienced consultants help minimize errors, reduce delays, and improve approval success rates. 

Conclusion

Obtaining BIS for IS 6908:1991 is not only a statutory requirement but also a strategic advantage for manufacturers of asbestos–cement pipes and fittings. The ISI Mark for IS 6908:1991 assures government bodies, contractors, and end users of product quality, safety, and durability. With increasing investments in sewerage and drainage infrastructure, demand for BIS-certified products continues to grow.

Manufacturers complying with IS 6908:1991, along with related standards such as BIS Certification for Asbestos Cement Flat Sheets, position themselves as trusted and compliant suppliers in the Indian infrastructure market.