Construction Threaded Steel Bars

Core Product Parameters & Performance​

Grade and Specifications​

The product grade is HRB400E, where "400" indicates a characteristic yield strength of ≥400MPa, and "E" denotes it as anti-seismic steel. Diameter specifications range from 12mm to 32mm, meeting the diverse thickness needs of different building structures: small-diameter steel bars are suitable for parts like construction columns and slab reinforcements, while large-diameter steel bars are commonly used for beam and column reinforcement in the main structure of buildings. This specification range complies with the size requirements of both GB/T 1499.2-2018 and ISO 6935-2:2015.​

Excellent Mechanical Properties​

Yield Strength: ≥400MPa, ensuring that steel bars do not undergo premature yield deformation when the building structure bears normal loads, thus safeguarding structural stability.​

Tensile Strength: ≥540MPa, endowing the steel bars with strong tensile capacity to effectively resist tensile forces generated by extreme external forces such as earthquakes and strong winds.​

Anti-Seismic Yield Ratio: ≤0.85, a key anti-seismic indicator that ensures the steel bars can absorb energy through deformation during sudden events like earthquakes without causing structural collapse due to rapid strength loss—greatly enhancing the anti-seismic performance of the building structure. These mechanical property indicators meet the anti-seismic requirements of GB 50204-2015 (Code for Acceptance of Construction Quality of Concrete Structures) and the international anti-seismic design guidelines for reinforced concrete.​

Brand & Quality Traceability​

Strategic Cooperation with Leading Brands​

We cooperate with leading domestic iron and steel enterprises such as Baosteel and Angang. These brands have profound technical accumulation, advanced steel smelting and rolling production lines, and strict quality control systems. From iron ore procurement to finished steel bar delivery, every link adheres to high-standard standardized operations, complying with ISO 9001:2015 (Quality Management Systems) and possessing strong capabilities to produce high-quality threaded steel bars.​

Full-Process Traceability​

Each threaded steel bar is marked with a clear heat number. Customers can access detailed information about the batch of steel bars (including raw material sources, production process parameters, and quality inspection reports) through the official inquiry system or relevant traceability channels. This realizes full-process quality traceability from raw materials to finished products, ensuring reliable product quality and providing customers with peace of mind during use—consistent with the traceability requirements of ISO 10380:2009 (Steel and iron products - Guidelines for product traceability).​

Supply & Customization Services​

Flexible Supply​

Considering the long construction cycle of real estate projects and the phased demand for steel bars, we provide batch supply according to the project construction schedule. This accurately matches the steel usage rhythm of real estate enterprises, avoiding capital occupation caused by early stockpiling and the risk of steel corrosion, and ensuring the smooth progress of projects.​

Professional Cutting Services​

We offer steel bar cutting services for construction enterprises with a cutting error of ≤5mm. Strict control over cutting dimensional accuracy meets the on-site demand for fixed-length steel bars, reduces on-site processing workload, and improves construction efficiency. The cut ends of the steel bars are flat, without affecting the mechanical properties of the steel—complying with the cutting quality standards specified in ASTM A615/A615M-23.​

Quality Assurance Measures​

Strict Sampling Inspection​

Before shipment, each batch of products undergoes sampling inspection in accordance with GB/T 1499.2-2018. Testing items cover key indicators such as mechanical properties (yield strength, tensile strength, elongation), chemical composition (content of elements like carbon, silicon, and manganese), and dimensional deviation. The testing process follows international testing norms such as ISO 17025:2017 (General Requirements for the Competence of Testing and Calibration Laboratories), ensuring that the quality of each batch of steel bars meets national standards and preventing substandard products from entering the market and construction sites.​

Quality Commitment​

If customers encounter quality problems during use, they can contact us immediately with the product heat number and relevant purchase certificates. We will arrange professional personnel to follow up and provide solutions such as product replacement or replenishment, fully protecting customer rights and engineering quality. This commitment aligns with the after-sales service requirements of ISO 10002:2018 (Quality Management - Customer Satisfaction - Guidelines for Complaints Handling in Organizations).​