The pull pin is made of a variety of materials with different lengths, so that the products with different thickness can be fixed with bolts. This paper describes the manufacturing materials of the stud. It shows that the material of the bolt itself is in front, and the material of the bolt journal is the material of the bolt journal, such as stainless steel plate / aluminum profile. This shows that the bolt itself is made of steel, and the bolt journal is made of aluminum profile. Pull nails are made of a variety of materials, such as stainless steel plate / stainless steel plate, aluminum profile / aluminum profile, stainless steel plate / stainless steel plate, stainless steel plate / aluminum profile, aluminum profile / stainless steel plate, stainless steel plate / stainless steel plate, red copper / red copper, red copper / stainless steel plate, and red copper / stainless steel plate. The double drum rivet also has different design schemes, such as It has the material, tensile and cutting characteristics of one kind of rivet, which is suitable for all main connection purposes.

The pulling nail is a scaffold fastener that builds the assembly structure within the tightening force, which is the tensile strength of the bolt journal, or called the breaking load. The bolt journal has a fracture point that can be measured in advance. When the tensile force applied by the special riveting installation tool reaches or exceeds the tensile strength or fracture load of the journal, the journal will break. The manufacturer of semi hollow rivet is based on the industrial production of scaffold fastener (IFI) 114, and the journal fracture load must be between the limit and the low limit.