Strength, precision,
and durability for
building strong futures

Designed for perfect bonding and
lengthened durability

Trust yourself…
Trust GTB


About GTB® Steel

Strengthening Sri Lanka’s construction industry

GTB® Steel Corporation (Pvt) Ltd. is an industry leader acclaimed for introducing Thermo Mechanically Treated reinforcement bar (TMT RB500) manufacturing to Sri Lanka. The technological advancements of TMT RB500 steel bars manufactured by GTB® Steel ensure distinct advantages including higher bond strength, excellent bendability, superior weldability, higher corrosion resistance, superior seismic resistance and many more.

GTB® Steel is an ISO 9001: 2015 certified organization, recognised for its quality management system. Our plant has a capacity of manufacturing upto 9,000 MT a month. Our products provide a superior level of core strength needed to meet increasing demands and complexities of engineering and construction industries of tomorrow and beyond.

Explore our range

GTB® TMT Steel

GTB® TMT RB500 steel bars are available in 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 32mm and 40mm diameters. Our range of profound quality GTB® TMT RB500 steel bars reach the market across Sri Lanka in sizes 6m and 12m. Customisation facility is available for any specific requirements.


Process & Quality

Microprocessor-based, Programmable Logical Controlled (PLC) re-heating furnace is used for heating billets sourced from prime steel mills and then rolled through a series of mill stands, progressively reducing the section to end size and shape range to produce bars at controlled temperatures. Subjecting to THERMEX Thermomechanical Process immediately after the bars leave their final stand while achieving the desired result of finished GTB® TMT RB500 steel bars of profound quality.