High Strength Box Column Splicing Joints CE ISO 9001 For High Rise Steel

Product Specification

Product Description
A Box Column Splicing Joint is a high-strength and stable structural node solution specifically designed for sectioned splicing of box-section steel columns in high-rise and super high-rise buildings. Manufactured with Q355B/Q460 high-strength steel, this product features a combination of internal/external stiffeners and 10.9 grade high-strength bolts, with full penetration welds at the splice interface, ensuring bending and shear bearing capacity equal to the original column (yield strength ≥345MPa for Q355B), making it suitable for buildings with height ≥100 meters. One of the key features of this joint is its optimized structural design—BIM technology is used for prefabrication modeling, ensuring component precision (dimension error ≤±1mm) and seamless on-site docking. The flange plate connection with symmetrically arranged bolts (M24-M36) ensures uniform force distribution, while the internal stiffeners (thickness 16-25mm) prevent local buckling of the box column during load transmission. The joint reserves a ±5mm vertical adjustment space, allowing on-site correction of column verticality deviation via bolt preload adjustment, which improves construction accuracy. For enhanced durability, the surface is treated with fluorocarbon paint (dry film thickness ≥100μm) or hot-dip galvanizing, providing excellent corrosion resistance (salt spray resistance ≥1500 hours) and adapting to urban high-rise environments (pollution, humidity) and coastal areas. The splice deformation is strictly controlled (≤L/1000, L=joint length), ensuring structural stability under wind loads and seismic action (seismic grade up to 9 degrees). It is widely used in super high-rise office buildings, luxury hotels, skyscraper residential buildings, and large-span industrial plant columns. Professional services include finite element analysis (FEA) of joint force performance, on-site installation supervision, and post-installation verticality detection, ensuring that the joint meets high-rise structure safety requirements.

Applications
Box Column Splicing Joints are high-performance node solutions designed for high-rise and super high-rise steel structures. Certified by CE (EN 1090-2), GB 50017-2017, and ISO 9001, they meet strict quality and safety standards for tall building construction, ensuring reliable performance in heavy-load and high-seismic scenarios. These joints are suitable for diverse high-rise applications, including sectioned splicing of box-section columns in super high-rise office towers (height ≥150 meters), luxury hotel core tube columns, skyscraper residential building load-bearing columns, large-span industrial plant main columns (span ≥30 meters), and high-rise bridge piers (steel box piers). They are particularly critical for super high-rise projects where column transportation length is limited (sectioned manufacturing and on-site splicing required) and structural stability under wind and seismic loads is paramount. The minimum order quantity is 3 sets for standard specifications (box column section 400×400×16mm to 800×800×30mm), and customized solutions are available for column section size, stiffener configuration, and bolt grade (12.9 grade optional) to meet specific high-rise design requirements. Competitive pricing and bulk purchase discounts (for orders over 20 sets) enhance cost-effectiveness, while the delivery time (15-25 workdays, including BIM modeling and prefabrication) supports high-rise project schedules. With a monthly supply capacity of 500 sets, the manufacturer ensures timely delivery even for mega high-rise projects. The high-strength steel material and premium anti-corrosion treatment (fluorocarbon paint) ensure long-term durability in urban high-rise environments