TG&P (Turned, Ground & Polished)

TG&P stands for Turned, Ground & Polished, a process used to produce precision round bar with tight tolerances, straightness, and smooth surface finishes.

What Is TG&P?

TG&P is a multi-step process:

  • Turned – Removes mill scale and brings material close to size
  • Ground – Achieves tight diameter tolerances
  • Polished – Improves surface finish and consistency

The result is a bar that is ready for machining or direct use in precision applications.

Why TG&P Is Used

  • Tight diameter tolerances
  • Smooth surface finish
  • Improved straightness
  • Consistent performance in machining

TG&P is commonly used when parts require precision fit and reliability.

TG&P vs Other Bar Finishes

TG&P vs Cold Finished (CF)

  • Better tolerance
  • Better surface finish

TG&P vs Centerless Ground (CG)

  • TG&P = pre-sized shafting
  • CG = final precision sizing

Common Applications of TG&P Steel

  • Precision shafting
  • Linear motion systems
  • Hydraulic rods
  • CNC machined components
  • Bearings and rotating parts

TG&P Available Options

Mozaic Precision Metals supplies:

 

  • TG&P shafting
  • Centerless Ground (CG) bar
  • Precision Ground (PG) bar
  • Tight tolerance diameters
  • Long-length bars

Request a Quote for TG&P Steel

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