About Us
Who is Captain Steel?
Captain Steel India Limited makes TMT reinforcement bars under the Captain brand. We have made them since 2007. Our head office is in Kolkata, our plants are in West Bengal and Bihar, and we sell across multiple states in eastern, northern and central India
We start from our own steel. Most rolling mills buy billets from someone else. We make ours - C-20 billets from our own steel melting shop, to IS 2830. That means we control the composition of the steel before it ever reaches the rolling mill, rather than inheriting whatever we were sold.
Captain 600 EQR delivers higher yield stress and elongation than prescribed IS standards for Fe 500, Fe 500D and Fe 550D grades of TMT rebar. Captain 600 EQR is our high-strength Fe 600 grade bar. Captain RustGuard is fusion-bonded epoxy-coated TMT - the coating is fused onto the bar at high temperature, not painted on afterwards, so water and salt have to get through it before they can reach the steel. We were the first company in Eastern India to make it. Alongside these we roll standard Fe 500 and Fe 550 grades for everyday construction.
Every batch is tested before it leaves. Rib pattern, tensile strength, bend. In our own laboratory, on our own site, on every batch - not on samples drawn once a quarter.
Captain Steel by the numbers
Making TMT bars since: 2007
Annual capacity: 5,25,000 MT
Epoxy-coating capacity: 50,000 MT
Plants: 2 - Kalyaneshwari (West Bengal), Bihta (Bihar)
Trade partners: 8000+
States served: 8
Registered as: Captain Steel India Limited, CIN 27109WB2003PLC097108
WE STRIVE FOR QUALITY & INNOVATION
- Our rolling mills are designed by Korus Engineering, a renowned rolling mill consultant
- Our plant has a high-tech quality control laboratory to ensure production of the best quality TMT bars
- We continuously introduced products of higher Fe grades; 500, 550 and now, 600
- Our finest TMT reinforcement bar, Captain 600 EQR has a Fe 600 Grade and provides greater strength, durability, and flexibility
- We consistently leads the way in introducing cutting-edge, innovative products, such as epoxy-coated TMT bars ( Captain Rustguard ), setting a standard for excellence.
TMT Bar Products Crafted with High Standards
Holds strength to 600°C
Holds strength to 600°C A house fire reaches several hundred degrees. Our bars are rated to hold their strength up to 600°C, so the structure keeps its capacity for longer while a building is being evacuated and a fire is fought.
Bends without cracking
Thermex processing gives the bar a hard outer rim and a softer, ductile core. The rim carries the load; the core lets the bar bend rather than snap. Captain 600 EQR elongates 16% against the BIS Fe 600 minimum of 10% - that ductility is what lets a bar be bent on site with conventional equipment, and what makes a structure give warning before it fails rather than failing suddenly.
Resists rust
Captain RustGuard carries a fusion-bonded epoxy coating, made to IS 13620. Water and salt have to get through the coating before they reach the steel. The coating is a barrier, so it works while it is intact - do not drag coated bars, cut them carefully, and treat the cut ends.
Made from quality billet
The use of C-20 billets enhances the intrinsic quality of the fusion bonded epoxy coated TMT bars to withstand load under adverse conditions.
Innovation with German Technology
The widely acclaimed Thermex Technology is used for the quenching and tempering of our TMT bars. This helps provide adequate strength and bendability to CaptainTMT rebars.
Automatic Rolling Mill
Our reinforcement bars are manufactured at fully automatic continuous rolling mills. This results in excellent dimensional tolerance to set the perfect configuration in surface finishing.
Scientific Rib Design
Surface ribs that protrude prominently on our TMT rebars create a tight grip with the concrete, which makes it safe in RCC constructions.
Fire Resistant
Our high strengthTMT bars can withstand heat up to 600 degrees.
Trusted By Partners
With a strong network of over 5000 trade partners, Captain Steel is one of the fastest-growing producers of the top TMT bars in India, expanding its footprint in multiple states across the country.
Improved Bendability
Our TMT rebars have a tough exterior and a high ductile percentage in the core. 100% safe bendability is possible, even in a standard conventional method.
Easy to weld
Due to low carbon content, our high strengthTMT bars can be butt or lap welded using ordinary rutile coated electrodes without pre or post-heat treatment.
Strength and Protection
Captain Steel TMT bars provide strength and structural integrity to constructions. Our rebars also safeguard against rust and extend the life of constructions for generations due to their fusion-bonded epoxy coating.
Cost Effective
Captain Steel delivers value for money to builders and contractors.
How is a Captain TMT bar made
- We make the steel. Our steel melting shop produces C-20 billets to IS 2830. Buying billets means inheriting someone else's chemistry; making our own means we set the carbon and the alloy content ourselves, at the stage where it is still possible to change.
- Continuous casting. The molten steel is cast continuously rather than in individual moulds, which gives a more uniform billet with fewer internal defects — the starting condition that determines how consistent the finished bar can be.
- Rolling. Fully automatic continuous rolling mills under PLC control, so the rib pattern and the section stay consistent bar to bar rather than drifting across a shift.
- Thermex quenching and self-tempering. Process technology from Germany. The hot bar is quenched at the surface, then allowed to temper itself from its own retained core heat. That produces the hard martensitic rim and ductile ferrite core — strength on the outside, bendability through the middle. It is the step that makes a TMT bar a TMT bar rather than plain rod.
- Epoxy coating, for RustGuard. Coated on our own line, in the same plant, to IS 13620 — not sent out to a third party after rolling. We coat 50,000 MT a year.
- Testing. Every batch goes through our own laboratory before dispatch: rib pattern, tensile strength, bend. Grades we roll: Captain 600 EQR (Fe 600) and 550 EQR to IS 1786, standard Fe 500 for general construction, and Captain RustGuard epoxy-coated bar to IS 13620.
Products Engineered with Cutting-edge Technology
Our TMT products ensure unparalleled strength, durability, and resilience for your structures. Elevate your construction projects with the backbone of excellence – choose Captain TMT for a foundation that stands the test of time.
FAQs
Captain Steel primarily manufactures high-quality TMT bars designed for residential, commercial, and infrastructure construction projects. In addition to TMT bars, the company also offers complementary steel products used in binding and structural applications, supporting various construction needs with consistent quality and performance.
Quality control is maintained through a structured and monitored manufacturing process. From the selection of raw materials to rolling, quenching, and final inspection, every stage follows defined quality parameters. Regular testing of chemical composition, tensile strength, elongation, and bend properties is conducted to ensure compliance with Indian standards. Multiple inspection checks are performed before dispatch to maintain consistency and reliability.
Customers trust Captain Steel because of its commitment to consistent quality, compliance with ISI standards, and transparent manufacturing practices. The company follows standardized production processes and continuous monitoring to ensure every batch meets structural safety requirements. Long-standing relationships with builders, engineers, and contractors further reflect the brand’s credibility in the construction sector.
Captain Steel’s TMT bars are manufactured using controlled rolling and advanced quenching processes that enhance strength, flexibility, and durability. The bars are designed to provide strong bonding with concrete, improved ductility, and resistance to corrosion under standard conditions. Uniform rib patterns and consistent dimensions contribute to dependable structural performance.
Yes, Captain Steel TMT bars are designed with high ductility and tensile strength, which are critical properties for structures built in earthquake-prone zones. Their ability to absorb and dissipate stress helps reduce the risk of sudden structural failure during seismic activity, making them suitable for construction in regions classified under seismic zones as per Indian standards.
