Key Differences Between IS 17875 and IS 17876 Under BIS Certification

The Bureau of Indian Standards (BIS) is developing a new standard for seamless and welded stainless steel pipes and tubes. This initiative addresses long-standing demand from the steel industry to establish quality norms for stainless steel products. Stainless steel pipes and tubes are now included in the mandatory certification list of the Bureau of Indian Standards (BIS). To acquire a standard mark (ISI mark), manufacturers need to obtain a BIS license from the Bureau of Indian Standards. 

For stainless steel pipes and tubes, BIS certification under IS 17875 (seamless) and IS 17876 (welded) is mandatory for the manufacturers to use the ISI mark, ensure compliance with Indian standards, and build consumer trust. But what are the key differences between IS 17875 & IS 17876? Let’s delve into the blog and solve this query.

The Essential Differences Between IS 17875 & IS 17876

Both IS 17875 & IS 17876 are used for stainless steel pipes and tubes, BIS certification. IS 17875 is for seamless Stainless Steel Pipes and Tubes for general purposes, whereas IS 17876 is for Welded Stainless Steel Pipes and Tubes for general purposes.

IS 17875—The standard outlines the BIS certification requirement for seamless stainless steel pipes and tubes for general applications. It details the specification for chemical composition, dimensional tolerance, testing procedure, and mechanical properties.

IS 17876—This standard outlines the requirements for BIS certification regarding welded stainless steel pipes and tubes intended for general purposes. It includes specifications on welding processes, mechanical properties, testing procedures, dimensional tolerance, and chemical composition.

Here we have some more breakdowns of differences between IS 17875 & IS 17876:

Types of Pipes & Tubes

• IS 17875: It deals with the stainless steel pipes and tubes that were formed without any welding or joints.
• IS 17876: This standard focuses on stainless steel pipes and tubes that are joined or formed through welding processes.

Different Scopes

• IS 17875: This standard outlines the requirements for chemical composition, dimensional tolerance, mechanical properties, and testing procedure for seamless stainless steel pipes and tubes.
• IS 17876: This standard specifies the requirements for welding processes, mechanical properties, chemical compositions, testing procedures, and dimensional tolerances for welded stainless steel pipes and tubes.

Click Here—BIS Certification for Stainless Steel Pipes and Tubes in details guide

Applications

• IS 17875: This standard applies to various general service applications that require seamless pipes and tubes. 
• IS 17876: This standard is suitable for general services applications where welded pipes and tubes are required. 

BIS Certification:

The BIS certifications for both IS 17875 and IS 17876 are recognized by the Bureau of Indian Standards (BIS) and require manufacturers to obtain the ISI mark certification for products that meet the standards. 

Key Features Of IS 17875

• Weld Strength: This standard ensures achieving high-quality welds for tubes, providing the necessary structural strength to withstand high pressure.
• Corrosion Resistant: The use of stainless steel guarantees long-term stability against environmental and chemical impact.
• Dimensional Standards: IS 17875 defines nominal outer diameter, permissible deviations to ensure uniformity, and nominal wall thickness.
• Load-Bearing Capacity: Tubes are designed to endure significant tensile and compressive forces, indicating that the frames can support substantial loads.

Key Features Of IS 17876

• The IS 17876 requirements for welding processing, dimensional tolerance, chemical compositions, and testing procedures.
• The BIS mandates that ISI-marked raw materials are used to produce stainless steel welded pipes and tubes; if a steel manufacturing facility is not available, ISI-marked raw material is preferred. Stainless steel welded pipes are made by roll forming stainless steel sheets or strips into a tube shape and welding the seam along its length.
• This process can take place using either the hot forming or the cold forming method.

Conclusion

The certification from the Bureau of Indian Standards (BIS) is essential for the stainless steel pipe and tube industry to establish market credibility and ensure product quality. Standards such as IS 17875 & IS 17876 address various industrial requirements, which cater to both standard applications and those in hot working environments. These standards will produce high-quality products that comply with stringent safety regulations, thereby building confidence among stakeholders and consumers.