BIS Certificate of Steel Tubes for Structural Purpose

The BIS IS 1161 certification is a quality standard for steel tubes used in structural applications. It tells if a steel tube is safe, strong and made as per Indian standards. This certificate is issued by the Bureau of Indian Standards (BIS) and it follows the IS 1161:2014 norms.
In simple words if you're using steel tubes for making bridges, towers, sheds or other building structures they must meet this standard. Why? Because safety and durability matter. 

Why BIS IS 1161 is So Important?

Steel tubes play a big role in construction. They carry loads, resist weather, and provide support. If they’re weak or made with poor quality, structures may collapse. The BIS IS 1161 standard helps make sure the steel tubes are made right.
The BIS mark proves:

• The steel is tested
• The material follows exact dimensions
• The strength meets national safety levels

This is not just for factories — builders, architects, and government buyers all check for this certificate.

Steel Grades and Categories Under IS 1161

Here’s how grades and standards are classified under IS 1161:

Grades Based on Mechanical Properties: 

• YSt 210
• YSt 240
• YSt 310

The higher the number, the stronger the tube.

Shapes of Tubes: 

• Circular
• Square
• Rectangular

Each shape is used for different designs in buildings or bridges.

Types of Finish: 

• Black
• Hot-Dipped Galvanized
• Cold Reduced

These finishes protect the tube from rust or wear.

Who Needs This BIS Certificate?

You must get BIS IS 1161 if you:

• Manufacture steel tubes for construction
• Import structural steel tubes to India
• Supply steel tubes to government projects
• Run an infrastructure or EPC company

Without this certificate, selling or supplying such products is not allowed in India

Read More  BIS Certification for Stainless steel plate, sheet and strip IS 6911l

Legal Framework for BIS IS 1161 Certification

This certification is governed by:

• Bureau of Indian Standards Act, 2016
• Steel and Steel Products (Quality Control) Orders by DPIIT

It is mandatory for all structural steel tube manufacturers in India or abroad who sell in Indian markets. BIS makes sure these products go through proper testing in BIS-recognized labs.

Documents Required for BIS IS 1161 Certification

To apply for the BIS certificate for IS 1161, you need to keep the following documents ready:

1. Factory Registration Certificate
2. List of Machinery and Equipment
3. Manufacturing Process Flow Chart
4. Test Equipment Calibration Reports
5. Authorization Letter (in case of consultants)
6. In-house Lab Details
7. Drawing of the Steel Tubes
8. Proof of Trademark/Brand
9. Utility Bills (Electricity or Water)
10. Test Report (from BIS lab)

These documents ensure your product is traceable, tested and compliant with Indian standards

Step-by-Step Registration Process in 2025

Let’s look at the actual registration process you’ll need to follow for BIS IS 1161:

Step 1: Application Filing

You’ll file Form VI with BIS, either through the online portal or through a consultant.

Step 2: Document Submission

Upload all necessary documents. BIS will check if your factory setup and process meet the rules.

Step 3: Product Testing

Send samples to a BIS-recognized lab. Testing will check for:

• Dimensional accuracy
• Yield strength
• Tensile strength
• Bend test
• Flattening test
• Zinc coating (if galvanized)

Step 4: Factory Inspection

BIS officers will inspect your unit. They’ll match the production with your claims.

Step 5: Grant of BIS Certificate

If everything is okay, BIS will issue the ISI license under IS 1161. This permits you to affix the ISI mark on your steel tubes

Read More IS 513: BIS ISI Mark Certification for Cold reduced low carbon steel sheets and strips

How Long Does It Take?

The complete process usually takes 3 to 4 months if all documents are correct and lab testing goes well

Validity and Renewal of BIS IS 1161 License

The BIS IS 1161 license is valid for 1 year initially. You can renew it every year by submitting:

• Renewal application form
• Updated test results
• Renewal fee
• Production report for the last year

The process is simple, but you must apply at least 30 days before expiry.

Cost of Getting BIS IS 1161 Certification

The total cost depends on the following factors:

Total Estimated Cost: ₹40,000 to ₹90,000 depending on your setup and consultant involvement

Challenges 

Many manufacturers face delays because of:

• Incomplete documents
• Sample rejection in labs
• Non-compliance in factory audits
• Unclear process flow
• Lack of in-house testing setup

To avoid these issues, it helps to hire experienced consultants who know BIS inside-out.

Read More  BIS ISI Certificate for Stainless Steel Vacuum Flask or Bottle: IS 17526

Why Agile Regulatory is the Right Partner

Getting BIS IS 1161 is a serious process. You must follow all the specified technical guidelines and meet testing norms. One mistake can cause delays or rejection.

Agile Regulatory helps you with:

• Complete documentation
• Lab testing coordination
• Compliance checks
• Factory setup guidance
• End-to-end certification support

Final Thoughts

The BIS IS 1161 certification for steel tubes is not just a legal rule — it ensures safety in every beam, column, and frame you build. If you are in the business of structural steel, getting this certification is a must. It builds trust, adds value, and opens doors to government and private contracts.

For smooth, fast, and expert registration help — connect with Agile Regulatory today. Our team will make compliance easy for you.