Main points of supervision on the entry of raw materials and finished products for space frame engineering

At present, the market demand for steel structure space frame engineering is gradually increasing, so I want to learn more about space frame processing in the fast era of information update. Today, the editor will introduce to you the raw materials and finished products of space frame engineering.

Key points of field supervision.

1. Steel materials, welding materials, standard fasteners for connection, welding balls, bolt balls, sealing plates, cones and sleeves, metal profiled plates, etc. should meet the current national product standards and design requirements, and comply with the “Steel Structure Engineering Construction” Specifications for Quality Acceptance” GB50205-2001. (Check the product quality certification documents, Chinese signs and inspection reports, etc.
2. Inspect the above products in accordance with the “Steel Structure Engineering Construction Quality Inspection Specification GB50205-2001″, and the inspection results should meet the current national product standards and design requirements.
3. The appearance inspection, welding strength test and non-destructive inspection (20% welding joint) of the rod must meet the standard requirements.
4. Architectural coatings should comply with current national product standards and design plans. 5. Other materials participating in the steel mesh project should meet the current national product standards.
5. Fabricate steel pipes and ball welded test pieces at welded ball joints. For the bolted ball joints subjected to unidirectional axial tension and compression bearing capacity tests, they meet the requirements of the tensile strength test of the thread of the large ball bolt hole.
6. Mechanical properties of high-strength bolts (hardness, hardness, section shrinkage, ball chemical composition analysis, sealing plate, cone head, sleeve).