North American Product Classification System (NAPCS) Canada 2017 Version 2.0
- 312 - Basic and semi-finished iron or steel products
- 31214 - Iron or steel pipes and tubes (except castings)
- 312141 - Iron or steel pipes and tubes for oil and gas (except castings)
- 3121411 - Iron or steel pipes and tubes for oil and gas (except castings)
- 312142 - Iron or steel pipes and tubes (except castings and oil and gas pipes and tubes)
- 3121421 - Iron or steel pipes and tubes (except castings and oil and gas pipes and tubes)
- Date modified: