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Steel Space Frame Installation

Ground Assembly of Welded Ball Rods and Welded Ball Space Frame

The ground assembly of the space frame (also called welded ball grid or space grid structure) composed of ball rods and welded ball nodes is a highly technical and organized work. The core is to accurately connect a large number of rods (steel pipes) to the prefabricated welded hollow ball nodes to form stable space units (small assembly units), and then combine these units into larger hoisting units or overall structures, and finally hoist them into place.

MOQ: 10000 square meters
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Ground Assembly of Welded Ball Rods and Welded  Ball Space Frame

  • The core goal of welding ball
  • Pretreatment of rods and ball nodes

  • Finished product protection and hoisting preparation

  • Precision control: Ensure that the length of all rods, the angle and hole position of the ball node, and the geometric dimensions of the final assembly unit meet the design requirements and meet the needs of subsequent lifting and overall structural force.
    Welding quality: The connecting weld between the rod and the ball node is the key force point, and 100% welding quality must be guaranteed (usually requiring first or second level welds).
    Efficiency and safety: Optimize the process, reduce high-altitude operations, reduce safety risks, and improve construction efficiency.
    Economical efficiency: Rationally use the site and reduce the cost of temporary measures such as tire frames.

  • Pretreatment of rods and ball nodes:
    Rod cutting and groove processing: Cutting and groove processing should be carried out strictly in accordance with the detailed drawing size and groove form (V-type, K-type, U-type, etc.). The groove surface and nearby areas need to be polished and cleaned.
    Spherical node re-measurement and marking: Clearly mark the number, reference line (such as 0 degree busbar), and hole number of the connecting rod on the ball node. Review the angle of the key hole.
    Rust removal and cleaning: The rod end (welding area) and the corresponding hole area of the ball node need to be rust-free (reaching Sa2.5 or St3 level) and cleaned to remove impurities such as oil, water, and rust.

  • Protect the welding area and paint area (if there is primer) to prevent collision, pollution and rust.
    Prepare the hoisting plan (including hoisting point design, sling selection, crane selection and positioning, aerial attitude control, positioning measures, etc.).
    Remove the tire frame (if the hoisting unit needs to be moved).

  • Easy To Operate

    Vita est illis semper in fuga uxoresque mercenariae conductae ad tempus ex pacto atque, ut sit species matrimonii, dotis nomine futura coniunx hastam et tabernaculum offert marito, post statum diem si id elegerit discessura, et incredibile est quo ardore apud eos in venerem uterque solvitur sexus.

    • Post hoc impie perpetratum quod
    • Conlaticia victitabant, et civili iustoque imperio

  • Easy To Operate

    Vita est illis semper in fuga uxoresque mercenariae conductae ad tempus ex pacto atque, ut sit species matrimonii, dotis nomine futura coniunx hastam et tabernaculum offert marito, post statum diem si id elegerit discessura, et incredibile est quo ardore apud eos in venerem uterque solvitur sexus.

    • Post hoc impie perpetratum quod
    • Conlaticia victitabant, et civili iustoque imperio

Key Points for Welding Balls

Accuracy is the lifeline,Welding quality is the core

From the prefabrication of ball nodes, bar cutting, frame positioning to each step of assembly measurement, the accuracy must be strictly controlled. The total station is the core measurement tool. The cumulative error must be dispersed and digested within the allowable range.
Welder skills, process execution, process monitoring, and non-destructive testing are indispensable. The quality of the weld is directly related to the safety of the structure.

The frame/platform is crucial

Its rigidity, stability, flatness and positioning accuracy are the basis for ensuring assembly accuracy. It is worthwhile to invest the necessary cost and time in the frame/platform.

Organization and coordination

Involving multiple types of work and professions such as materials, measurement, assembly, welding, lifting, quality inspection, etc. Strong project management and on-site coordination are required.

Summary

The ground assembly of welded ball rods and welded ball space frames is a systematic project that integrates technologies such as precision measurement, high-strength welding, large-scale component assembly, and strict quality control. Its success depends on precise preliminary preparation (design, materials, site, tire frame), strict process execution (positioning, welding), real-time precision control (total station measurement), and a complete safety and quality management system. The quality and accuracy of the ground assembly directly determine the installation accuracy, force performance, and overall safety of the final structure.

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