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- The BIS Certification for Polyamide Multifilament Ropes guarantees quality, durability, and conformity to IS 4572:2022.
- The ISI mark guarantees strengths such as tensile strength, weather-resistance, and long-term reliability, which are imperative for industrial and marine applications.
- Diligence Certification offers complete support from testing through BIS license issue and renewal.
Introduction
In 2024, a marine supply equipment company based in Mumbai was disqualified from a large defense supply tender of ₹3.8 crore for not having their Polyamide Multifilament Ropes certified by the Bureau of Indian Standards under IS 4572:2022. Although their products passed the company’s own tensile and load-bearing tests, the tender committee disqualified them on the grounds of the Bureau of Indian Standards Act, 2016, which mandates that critical materials used in safety operational solutions for marine and industrial applications must undergo Bureau of Indian Standards certification.
This case shows what many Indian manufacturers learn too late — quality control tests alone aren’t enough.
To engage in public tendering, export consignments, or simply provide confidence to customers, BIS Certification for Polyamide Multifilament Ropes is necessary.
Diligence Certification supports rope manufacturers to navigate the complete BIS process — product testing, documentation, licensing grant, and licensing renewals — under IS 4572:2022 compliance, efficiency, and uninterrupted business progression.
What is IS 4572:2022?
IS 4572:2022 is an Indian standard issued by the Bureau of Indian Standards (BIS), detailing the characteristics and testing and performance criteria for Polyamide Multifilament Ropes, specifically for marine, industrial, and other load bearing applications.
These ropes will be required to retain their strength, flexibility and weather resistance in tough, outdoor, marine environments. The standard specifies important physical and mechanical characteristics, including breaking strength, elongation, dimensional tolerance and chemical resistance.
Key Technical Parameters under IS 4572:2022
1. Material Composition:
The ropes must be manufactured using high-grade polyamide fibers (commonly known as nylon), ensuring excellent elasticity, toughness, and resistance to abrasion.
2. Construction Type:
IS 4572:2022 classifies ropes into 3-strand, 4-strand, or 8-strand braided types, with specifications for lay direction, strand balance, and core uniformity.
3. Diameter and Tolerances:
Each rope size must fall within permissible limits for diameter and circularity to maintain load uniformity and compatibility with machinery.
4. Breaking Load and Elongation:
Mechanical tests determine the minimum breaking load, elongation at break, and knot efficiency to ensure performance under operational stress.
5. Weathering and Chemical Resistance:
Ropes are tested against UV degradation, saltwater corrosion, and exposure to oils and chemicals for longevity.
6. Marking and Identification:
Every BIS-certified rope must bear the ISI Mark, manufacturer’s name or code, rope size, and batch number to ensure traceability.
Why BIS Certification for Polyamide Multifilament Ropes is Essential
1. Legal Requirement of BIS Act 2016
Manufacturing or selling polyamide ropes without a valid BIS license is against the provisions described in Section 17 of the BIS Act 2016.
Mixing up, the penalties for this violation may include fines and seizure of products, to even suspensions of manufacturing.
2. Quality Assurance for Performance & Safety
All BIS certified ropes will have carried out detailed laboratory tests to verify tensile strength, flexibility, and testing against moisture, UV rays, and chemicals in order to guarantee performance and safety.
3. Applicability for Government Tenders
Government departments including the Indian Navy, Ports Authority and Defense Logistics Division, will only procure ISI-marked ropes thus BIS certification is necessary for procurement eligibility purposes.
4. Enhances Brand Image
The ISI Mark is a mark of reliability and quality, which builds agricultural trade in both the domestic and international market for greater trust and preference with customers and distributors.
5. Expands Export Potential
Many foreign buyers recognize BIS-certified products as equivalent to ISO standards, facilitating smoother entry into global tenders and trade contracts.
Understanding the ISI Mark for Polyamide Multifilament Ropes
The ISI Mark confirms that the rope meets IS 4572:2022 performance parameters, including:
- Correct strand construction and lay type
- Consistent diameter and circularity
- Verified breaking strength and elongation
- Resistance to weathering and chemical degradation
- Batch traceability for quality assurance
Each ISI-marked rope batch can be traced to its certified manufacturer, providing full accountability and quality verification.
Benefits of BIS Certification
| Benefit | Description |
| Legal Compliance | Mandatory under BIS Act, 2016 |
| Tender Eligibility | Required for all government and marine contracts |
| Quality Assurance | Tested for strength, elongation, and chemical resistance |
| Brand Reputation | Builds customer confidence and credibility |
| Export Approval | Recognized by overseas procurement agencies |
| Market Access | Enables participation in regulated supply chains |
Eligibility Criteria for BIS Certification
To apply for BIS Certification under IS 4572:2022, manufacturers must:
- Own a registered manufacturing unit (Company, LLP, or Proprietorship).
- Operate an active production setup with adequate testing facilities.
- Employ qualified technical and quality personnel.
- Maintain records of raw materials, batch production, and test reports.
- Allow BIS officials to inspect factory and laboratory facilities.
Step-by-Step BIS Certification Process
1. Identify Applicable Standard
Confirm that your product falls under IS 4572:2022 – Polyamide Multifilament Ropes.
2. Application Submission
Apply online through the Manak Online BIS Portal with manufacturing and technical details.
3. Product Testing
Send rope samples to a BIS-recognized laboratory for testing tensile strength, elongation, and weather resistance.
4. Factory Inspection
A BIS officer visits your factory to verify quality systems, test equipment, and compliance with production standards.
5. License Grant
If tests and inspections are satisfactory, BIS issues a Certification Mark License (CM/L) allowing you to use the ISI mark.
6. License Validity & Renewal
- Initial validity: 2 years
- Renewal: Up to 5 years (based on consistent quality and performance reports)
Documents Required for BIS Certification
| Category | Documents Required |
| Company Details | GST, Incorporation, Udyam/MSME registration |
| Factory Details | Layout plan, machinery list, process flowchart |
| Product Testing | BIS lab report (IS 4572:2022) |
| Quality Records | Internal test reports, calibration certificates |
| Technical Data | Fiber composition, rope construction details |
Validity and Renewal of BIS License
- Initial License Period: 2 years
- Renewal Duration: 1–5 years based on quality performance
- Renewal Application: Minimum 3 months before expiry
- Requirements: Updated lab test reports and factory audit results
Failure to renew may result in license suspension or cancellation, affecting manufacturing and supply continuity.
Common Challenges Manufacturers Face
- Delayed or incomplete test reports from BIS labs
- Failure in breaking load or elongation test
- Missing calibration certificates for testing instruments
- Poor documentation of batch traceability
- Application rejection due to incomplete submissions
Diligence Certification addresses all these pain points through structured documentation, testing coordination, and pre-inspection audits.
Cost of BIS Certification
| Cost Component | Details |
| Application Fee | Paid online via BIS Portal |
| Testing Charges | Based on rope diameter and type |
| Inspection Fee | Factory visit cost by BIS officer |
| License Fee | For ISI Mark usage |
| Renewal Fee | Payable every 2–5 years |
Total cost varies depending on factory location, sample quantity, and test complexity.
Diligence Certification offers transparent cost estimates before initiating the process.
Why Choose Diligence Certification
Diligence Certification is India’s trusted BIS Certification Consultant specializing in polymer and industrial products.
Our Strengths:
- 10+ years of expertise in BIS certification for ropes, fibers, and safety materials
- End-to-end support — from testing to documentation and audits
- Fast-track license approval and renewal services
- Nationwide service network across India’s industrial belts
- Dedicated compliance advisors for construction and marine-grade products
Whether you’re a new entrant or a large-scale manufacturer, Diligence Certification ensures a smooth, audit-ready BIS process under IS 4572:2022.
Conclusion
Obtaining BIS Certification for Polyamide Multifilament Ropes (IS 4572:2022) is not just a compliance necessity — it’s a mark of trust, durability, and global acceptance.
The ISI Mark ensures your ropes meet India’s highest quality benchmarks for marine, construction, and industrial applications.
With expert support from Diligence Certification, manufacturers can handle every stage — from lab testing to factory audit — efficiently and confidently.
Get your product BIS-certified and establish your brand as a leader in India’s fast-growing rope and safety materials market.
Frequently Asked Questions
What does BIS certification for Polyamide Multifilament Ropes mean?
BIS certification indicates that the polyamide rope complies with the quality, strength and safety requirements as specified by IS 4572:2022 for marine and industrial applications.
Why does Polyamide ropes require BIS Certification?
BIS certification is required by law, under the BIS Act, 2016 for manufacturers and suppliers of the rope that is to be used in important marine and industrial applications.
Which Indian Standard is relevant for Polyamide Multifilament Ropes?
The Indian Standard is IS 4572:2022, which specifies standards for construction, tensile strength, elongation, and weather-resistance.
What is the ISI Mark on Polyamide ropes?
The ISI Mark on the rope indicates it has been tested and approved by Bureau of Indian Standards (BIS) for quality and durability.
Who must have BIS Certification?
Any company manufacturing polyamide multifilament rope for sale in India, or for a Government tender, must have BIS Certification.
How long is the BIS License valid?
The standard license is valid for 2 years and can be renewed every 5 years based on quality performance.
What information is required to apply for BIS Certification?
Registration of the company, layout of the factory, test report from a laboratory, and details about the product indicating its compliance with IS 4572:2022.
What is the cost of getting BIS Certification?
Cost is a function of application fee, testing fee, inspection fee and license fee - the majority of which will be based on rope size, factory location and scope of testing.
How long is the process for getting awarded the BIS Certification?
The process will normally take around 6–8 weeks depending on testing and inspections of the factory.
In what way Diligence Certification can help you?
Diligence Certification offers end-to-end BIS support which includes, documentation, testing of the product and filing for the license, and any renewal, if needed.
