Material Introduction for Tsin Steel Structure Company

Tsin Steel Structure Company employs a comprehensive range of high-performance materials to ensure structural integrity and durability. The primary materials include hot-rolled structural steel (e.g., ASTM A36/A992 with yield strengths of 250–355 MPa and Q345/Q390 microalloyed steels for heavy-duty applications) . These steels are rigorously tested for tensile strength (400–600 MPa) and elongation (≥20%) to withstand dynamic loads. For secondary framing, cold-formed steel (CFS) with G90 galvanized coatings is used, offering lightweight yet robust solutions for studs and tracks . Stainless steel grades (304/316) are integrated in corrosive environments, while hot-dip galvanized steel (80–275 g/m² zinc coating) and intumescent fire-resistant coatings (2+ hour ratings) enhance corrosion and fire resistance . All materials comply with ISO 9001:2015 and CE/UKCA standards, ensuring consistency and sustainability.

Tsin’s bolted connections prioritize safety, efficiency, and code compliance. High-strength friction grip (HSFG) bolts (ASTM A325/A490) are core to critical joints, preloaded via torque-controlled wrenches to ensure shear resistance through frictional force . These bolts are designed to EN 1090-1 and undergo ultrasonic inspection to verify full penetration. For non-critical applications, ASTM A307 standard bolts are used, offering cost-effective solutions for purlin-to-rafter attachments. Tsin’s proprietary connectors, such as the Drift Clip®, accommodate vertical deflection in post-tensioned slabs while maintaining load transfer efficiency . All connections adhere to strict quality protocols, including magnetic particle inspection for welded joints and CE marking for European markets, ensuring structural reliability across diverse projects . Bolted assemblies are prefabricated in workshops to minimize on-site labor, with hole tolerances controlled within ±1 mm for precise alignment .