Understanding Is 15041:2001 – India’s Standard For Flat Woven Webbing Slings, Explained

By Author: Indolift
Total Articles: 42
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Industrial lifting and rigging operations demand precision, safety, and strict adherence to standards. Among the many tools used in lifting applications, flat woven webbing slings have become increasingly popular due to their flexibility, lightweight nature, and ability to handle heavy loads with reduced damage to the lifted object. However, improper design, poor manufacturing practices, or incorrect usage can result in catastrophic accidents. To address these concerns and establish a framework for safe use, the Bureau of Indian Standards (BIS) introduced IS 15041:2001 — the Indian standard that governs flat woven webbing slings made of man made fibres for general service.
What is IS 15041:2001?
IS 15041:2001 is the Indian Standard specification for flat woven webbing slings made of man made fibres for general service. It aligns closely with international norms, such as EN 1492-1, and ensures that slings manufactured, supplied, and used in India meet essential safety, quality, and performance benchmarks.
The standard covers:
• Design and construction requirements
• Materials (polyester, polyamide, ...
... polypropylene)
• Manufacturing processes
• Marking and colour coding
• Safe working load (SWL) and breaking strength
• Testing, inspection, and rejection criteria
By adhering to IS 15041:2001, manufacturers assure customers that the slings are safe, reliable, and suitable for industrial lifting operations.
Scope of the Standard
The scope of IS 15041:2001 extends to flat woven webbing slings with or without end fittings made from synthetic fibres, primarily for lifting and general industrial use. It excludes:
• Round slings (covered by different standards)
• Slings made of natural fibres
• Special-purpose slings designed for unique applications
This makes the standard particularly relevant to industries such as:
• Construction
• Shipping and logistics
• Power and heavy engineering
• Oil & gas
• Manufacturing and fabrication

Key Requirements of IS 15041:2001
a) Material Selection
Webbing slings must be manufactured from man made fibres such as polyester (PES), polyamide (PA), or polypropylene (PP). Each fibre type has its own properties:
• Polyester (PES): Excellent resistance to most acids, high strength, low stretch.
• Polyamide (Nylon/PA): Good resistance to alkalis, higher elasticity, absorbs water.
• Polypropylene (PP): Lightweight, economical, resistant to chemicals but lower temperature resistance.
The choice of fibre impacts the sling’s suitability for different environments.

b) Safety Factor
One of the cornerstones of IS 15041:2001 is the requirement for a minimum safety factor of 7:1. This means that if a sling has a working load limit (WLL) of 1 tonne, its actual breaking strength must be at least 7 tonnes. This margin accounts for wear, misuse, and unpredictable stresses during lifting.

c) Construction and Design
• Slings must be woven uniformly without visible defects.
• Edges should be reinforced to minimize abrasion.
• Eye terminations (loops at the end) should be durable and protected against wear.
• End fittings (if any) must be compatible with the sling and meet load requirements.

d) Colour Coding and Marking
For quick identification, IS 15041:2001 mandates a colour coding system based on the sling’s working load limit. For example:
• Violet: 1 tonne
• Green: 2 tonnes
• Yellow: 3 tonnes
• Grey: 4 tonnes
• Red: 5 tonnes
• Brown: 6 tonnes
• Blue: 8 tonnes
• Orange: 10 tonnes
In addition, slings must carry labels or tags with essential information:
• Manufacturer’s name
• Safe working load (WLL)
• Length
• Material type
• Standard reference (IS 15041:2001)
This ensures traceability and safe usage.

e) Testing and Quality Control
Manufacturers must test slings for:
• Breaking strength (minimum 7x WLL)
• Proof load test (usually 2x WLL)
• Dimensional accuracy
• Stitching integrity
Periodic inspections and rejection criteria are also defined in the standard to ensure continued safety.
Why IS 15041:2001 Matters
a) Worker Safety
Improper lifting equipment is one of the leading causes of workplace accidents in India. By enforcing strict guidelines, IS 15041:2001 reduces risks and ensures safer workplaces.
b) Legal Compliance
The Ministry of Textiles, under the Indutech (Quality Control) Order, 2024, has made BIS certification mandatory for flat woven webbing slings from April 2025. Non compliance may result in penalties, product recalls, or legal liabilities.
c) Reliability in Operations
A BIS certified sling guarantees performance, reducing downtime and losses due to sling failure.
d) Customer Confidence
End users gain assurance that the products they purchase meet internationally aligned safety benchmarks.
Practical Implications for Industry
a) For Manufacturers
• Must obtain BIS certification for their products.
• Need to maintain detailed test records and quality control processes.
• Have to update labels, markings, and documentation.
b) For Distributors & Suppliers
• Only BIS certified slings can be legally sold.
• Must educate customers about markings and standards.
c) For End Users (Construction, Shipping, etc.)
• Ensure all purchased slings are ISI marked.
• Train employees to interpret colour codes and labels.
• Conduct regular inspections and retire slings showing damage.
Common Misconceptions
• “All webbing slings are the same.” False. Material type, weave quality, and compliance with IS 15041:2001 make a big difference in safety.
• “If it looks strong, it’s safe.” Appearance alone cannot guarantee performance. Only tested and certified slings are reliable.
• “Repaired slings can be reused.” Not allowed under IS 15041:2001. Damaged slings must be discarded.
The Future of Webbing Sling Safety in India
With the enforcement of the Quality Control Order (2024) in April 2025, adherence to IS 15041:2001 will no longer be optional but mandatory. This will:
• Improve overall safety standards in Indian industries.
• Eliminate sub standard and counterfeit products from the market.
• Encourage innovation in sling design and manufacturing.
We can also expect greater awareness among end users, more training programs, and stricter enforcement by safety inspectors.
Key Takeaways
• IS 15041:2001 governs flat woven webbing slings made from synthetic fibres for general service in India.
• The standard specifies safety factors (7:1), colour coding, markings, and testing requirements.
• From April 2025, BIS certification for webbing slings becomes mandatory in India.
• Compliance ensures worker safety, reliability, and legal protection for manufacturers, suppliers, and users alike.
Flat woven webbing slings play a vital role in safe and efficient lifting operations across industries. IS 15041:2001 ensures that these slings meet rigorous safety and quality requirements, minimizing risks and maximizing productivity. With upcoming regulatory changes, businesses must act swiftly to align with the standard, obtain BIS certification, and train their workforce in proper usage. In doing so, they will not only comply with the law but also foster a culture of safety and trust.
In short, IS 15041:2001 is not just a standard — it is a safeguard for lives, assets, and business continuity.