Pipe HSN Code: Understanding HSN Classifications for Pipes

What Is the Pipe HSN Code?

Under GST, pipes are classified based on the material used to make them. Plastic pipes , metal pipes and copper pipes each sit in different chapters and headings of the tariff.

PVC, HDPE, UPVC, CPVC and flexible plastic pipes are grouped in the plastics chapter in a heading that covers tubes, pipes, hoses and their fittings. Steel and other iron pipes are grouped in the iron and steel chapter in headings for seamless and welded tubes and pipes.

Copper pipes and tubes are grouped in the chapter for copper and copper articles. For day to day billing, most businesses work with a few common four digit HSN families for plastic pipes, steel pipes and copper pipes and then manage sizes and pressure ratings through their own item codes.

Key Pipe HSN Codes and GST Rates after 22 September 2025

Pipe HSN Code Classification and GST Rates

Here are some commonly used HSN codes and GST rates for this category

Section Classification

Chapter Classification

4 Digit HSN Code Classification

8 Digit HSN Code Classification

* GST rates may vary based on the latest GST notifications.

HSN Code for PVC, HDPE, and Copper Pipes

PVC, HDPE, UPVC, CPVC and similar plastic pipes used for water supply, drainage and irrigation are usually placed in the plastics pipe heading in the tariff. This heading covers rigid and flexible plastic pipes and their fittings such as elbows and tees.

Copper pipes used for gas, refrigeration and domestic water lines are placed in the copper tubes and pipes heading. This heading covers plain and drawn copper tubes supplied in straight lengths or coils.

Steel pipes used in building services and industrial lines are placed in the seamless pipe heading or the welded pipe heading in the steel chapter, depending on how they are made. Even though plastic, steel and copper pipes fall in different chapters, they serve similar roles in plumbing and fluid transport.

GST on Pipes and HSN Code Classification

After the move to the three slab GST structure on 22 September 2025, pipes remain in the standard slab of 18%. They do not fall in the lower 5% slab for selected essentials and they are not in the 40% slab that is reserved for sin and luxury goods.

This means that PVC pipes , HDPE pipes , UPVC and CPVC plumbing pipes, steel pipes and copper pipes are generally taxed at 18% under their respective HSN codes. Any change would come only through a specific notification for a particular type of pipe or for a special government scheme.

In practice, businesses map all plastic pipes to the plastics pipe HSN family and all steel pipes to the steel pipe families and copper pipes to the copper pipe heading. They then set the GST rate at 18% for each of these families in their accounting software so that invoices show the correct HSN code and tax.

During GST return filing , outward supplies of pipes are reported HSN wise. Correct use of the pipe HSN code helps match returns with e way bills and purchase records and allows buyers to claim input tax credit on pipe purchases used in projects and operations.

Conclusion

The pipe HSN code system places PVC, HDPE, UPVC and CPVC pipes in the plastics chapter, steel pipes in the iron and steel chapter and copper pipes in the copper chapter, with separate headings for seamless and welded products.

Since pipes are standard construction and utility goods, they continue to attract 18% GST under their HSN codes after the changes from 22 September 2025. When suppliers and contractors link each type of pipe to the correct HSN family and apply the right GST rate in invoices and returns, they keep billing accurate and reduce the risk of notices or penalties related to wrong classification.