The HSN code & GST rate for Structural Iron or Steel Components including cable tray, fabrication & Scaffolding is given as 7308 under the chapter 73. 0 of Articles of iron or steel. The HSN Code for Cable Tray is essential for manufacturers, suppliers, and contractors in the electrical and construction sectors. Knowing the correct cable tray HSN code helps you apply the right. steel cable tray HS-codes. Plastic Bucket under HS Code 3924-24 shows growing demand in 12 emerging markets with favorable duty rates and limited competition. HSN codes, or Harmonized System of Nomenclature codes, are standardized classifications used globally for goods and services.