Grade 60
Suitable for all
Residential and Commercial Projects
Naveena Pro bars are ideal to use in areas that are more prone to earthquakes as they comply with American Standard for Testing Material (ASTM) A-706/A-706M. These bars have an optimal tensile to yield ratio to improve flexibility and ductility and they are also known for their welding ability that helps save construction cost.
Specifications:
- Minimum Yield Strength: 60,000 psi [420 MPa]
- Maximum Yield Strength: 78,000 psi [540 MPa]
- Minimum Tensile Strength: 80,000 psi [550 MPa]
- Tensile/Yield Strength Ratio (min): > 1.25
- American Standard: A706/A706M - 22
- Steel Type: W
- Elongation in 8 in. [200 mm], (min), %. 9.5mm to 20mm: 14%, 22mm to 36mm: 12%, 40mm: 10%
Features:
- Earthquake resistant
- Binds well with concrete
- High flexibility & ductility
- Weldable
- Easy to fabricate
- Value for money due to uniformity in the gauge and overall dimensions
Grade 60
Suitable for all
Residential and Commercial Projects
Naveena Titan Grade 60 deformed bars comply strictly with American Standard for Testing Material (ASTM) A-615/A-615M to ensure quality, strength, flexibility and durability, making Titan bars more suitable for all types of residential & commercial projects.
Specifications:
- Minimum Yield Strength: 60,000 psi [420 MPa]
- Minimum Tensile Strength: 80,000 psi [550 MPa]
- Tensile/Yield Strength Ratio (min): 1.10
- American Standard: A615/A615M - 22
- Steel Type: S
- Elongation in 8 in. [200 mm], (min), %. 9.5mm to 20mm: 9%, 22mm to 25mm: 8%, 28mm to 40mm: 7%
Features:
- Value for money due to uniformity in the gauge and overall dimensions
- Binds well with concrete
- Easy to fabricate
Grade 80
Suitable for all
Residential and Commercial Projects
Naveena Gold Bars Grade 80 comply with ASTM A615/A615M. It provides additional robustness, combined strength and added safety measures, making it an ideal choice for flyovers, high-rise buildings, power plants, and other even cross bridges. Naveena Gold is highly recommended for mega structures due to high tensile strength. It ensures the structural integrity of any structure and is the perfect choice for various construction applications.
Specifications:
- Minimum Yield Strength: 80,000 psi [550 MPa]
- Minimum Tensile Strength: 100,000 psi [690 MPa]
- Tensile/Yield Strength Ratio (min): 1.10
- American Standard: A615/A615M - 22
- Steel Type: S
- Elongation in 8 in. [200 mm], (min), %. 9.5mm to 25mm: 7%, 28mm to 40mm: 6%
Features:
- High strength-to-weight ratio
- Resistant to corrosion
- The unique combination of yield & tensile strength
- Superior durability and ductility
- High weldability and workability
- Fire resistance and seismic resistance
- High fatigue resistance
Grade 72.5
Suitable for all
Residential and Commercial Projects
Naveena Power bars manufactured from special composition of billets provide optimum strength for high-rise constructions and mega structures. Compared to Grade 60 bars, Power bars economically suit cost and improve the strength of the structure.
Specifications:
- Minimum Yield strength, Re: 72,500 psi (500 MPa)
- Minimum Tensile strength, Rm: 84,000 psi (575 MPa)
- Tensile/Yield Strength Ratio, Rm/Re: > 1.15, < 1.35
- Steel Grade: G 72.5W (B500C)
- British Standard: BS 4449:2005+A3:2016
- Steel type: Weldable
- Bar Elongation at Fracture: ~10-12%
Features:
- Lower project cost – Use fewer tons compared to regular deformed bars
- Lower rebar congestion in the structure
- Low tonnage/footage ratio – Get more running feet per ton
- Value for money due to uniformity in the gauge and overall dimensions
- Better bond with concrete because of unique rib pattern
- High flexibility & ductility
- Easy to fabricate
- Suitable for earthquake prone areas
Our Quality Control system works holistically to deliver the best possible value to our customers. We have placed strict controls to meet international quality standards set by the American Society for Testing and Materials, not only to maintain accuracy in chemical composition and physical properties but also to ensure our customers have the best experience. Our facility is equipped with laboratories that ensure quality at the plant at every stage, right through testing of incoming raw materials to testing of billets and finished rebars.
A. Steel Melt Shop Laboratory:
The Steel Melt Shop Laboratory performs tests of steel scrap, mill scale, ferro alloys, refractory materials and water quality through our stringent Standard Testing Procedures. Steel melt samples are tested at our state-of-the-art Optical Emission Spectrometer to ensure accurate chemical composition of steel billets, conforming to international standards.
B. Rolling Mill Laboratory:
The Rolling Mill Laboratory performs tensile test, Bend test and Metallography to ensure that the durability, ductility, strength and microstructure of the steel rebar conform to standard specifications. Tensile testing of rolled bars is carried out by using servo controlled tensile testing machines to measure total elongation, toughness, ductility, tensile strength, yield strength and bendability. This test also monitors stress time, load time, stress position, load position and yield to tensile strength ratio. Metallography is a metallurgical technique which is used to check the microstructure of steel and depict the soundness of steel and its behavior when subjected to extreme applications. The reliability of test machines is ensured through periodic calibration and routine verification.
Certifications
Besides being experts at meeting Global Standards of quality, Naveena Steel has deployed a Total Quality Management System and is also certified by Pakistan Standards & Quality Control Authority (PSQCA) and ISO 9000.
