This standard specifies the classification, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of steel pipe scaffold fasteners. This standard is applicable to fasteners made of malleable cast iron or cast steel used in scaffolding, derrick, and formwork supports with steel pipes with a nominal outer diameter of 48.3 mm in construction projects. It is also applicable to municipal, water conservancy, chemical, metallurgical, coal, and shipbuilding projects. Fasteners used in . Steel pipe scaffolding fasteners with a nominal outer diameter of 51mm and the fasteners in use can also refer to this standard.
GB 15831-2006 Referenced Document
GB/T 196 General purpose metric screw threads--Basic dimensions
GB/T 228 Metallic materials--Tensile testing at ambient temperature