630 subway steel support

During subway construction, deep foundation pit excavation is prone to soil displacement risks. The 630 subway steel support, arranged laterally between the retaining structures, forms a stable load-bearing frame. Its application scenarios cover the entire lifecycle from initial foundation pit excavation to main structure backfilling. Especially in soft soil layers or near adjacent buildings, it effectively controls the deformation of the retaining structure, providing a safe working space for construction personnel and equipment. In a Tianjin subway extension project, this product successfully addressed the challenges of high groundwater levels and complex geological layers, maintaining millimeter-level deformation control even with a support spacing of 8 meters.

The product's advantages are reflected in three aspects: In terms of material performance, it adopts Q355B low-alloy high-strength structural steel with a yield strength of 355MPa, which increases the load-bearing capacity by 20% compared with ordinary steel; in terms of structural design, the wall thickness distribution is optimized through finite element analysis, which reduces the weight of a single piece by 15% while ensuring strength, making it easier to lift and install; in terms of customization capabilities, the company is equipped with multiple automated production lines, which can adjust parameters such as support length and connection method according to the depth of the foundation pit and soil parameters. It has customized 12-meter ultra-long steel supports for overseas projects with the error controlled within ±2mm.

Tianjin Shenghui Metal Products Co., Ltd. has been deeply involved in the metal products industry for many years, possessing an independent R&D laboratory and a complete quality inspection system. From raw material intake to finished product delivery, each steel support undergoes seven testing processes, including ultrasonic flaw detection and static load testing. Currently, its products have served over 30 domestic and international subway projects, including urban rail transit construction in Singapore and Malaysia. For different working conditions, the company provides one-stop services from scheme design to installation guidance, supports rapid prototyping of non-standard sizes, and shortens delivery cycles by 30% compared to the industry average.