Production name | Wedge anchor bolt |
Standard | DIN,ASTM/ANSI JIS EN ISO,AS,GB |
Material | Stainless Steel: SS304, SS316, SS316L,
Carbon Steel:DIN:Gr.4.8,8.8,10.9,12.9; |
Surface | Zinc(Yellow,White,Blue,Black),Hot Dip Galvanized(HDG),Black, Geomet,Dacroment,Anodization,Nickel plated,Zinc-Nickel plated,Gleitmo615;PTFE(Blue,red) |
Production Process | Machining and CNC for Customized fastener |
Customized
Products |
Busy season:30-45days,Slack seaon:10-20days;In stock |
Package | Small Packing+Carton Packing+Pallet/wooden case |
Expansion bolts are a special type of threaded connection used to secure pipeline supports/hangers/brackets or equipment to walls, floors, or columns. The grades of carbon steel bolts are divided into more than 10 grades, including 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc.
The numbers before and after the decimal point respectively represent the nominal tensile strength and yield strength ratio of the bolt material. For example, marking an 8.8 grade bolt indicates that the tensile strength of the material reaches 800 MPa, and a yield strength ratio of 0.8 means that its yield strength reaches 800 x 0.8=640 MPa.
Material Science
The grades of expansion bolts are divided into 45, 50, 60, 70, and 80;
The materials are mainly divided into austenite A1, A2, A4;
Martensitic and ferritic C1, C2, C4;
Its representation method is, for example, A2-70;
The front and back respectively represent the bolt material and strength grade
(1) Common bolt materials: Q215, Q235, 25, and 45 steel. For important or special purpose threaded connections, alloy steels with high mechanical properties such as 15Cr, 20Cr, 40Cr, 15MnVB, 30CrMrSi, etc. can be selected.
(2) The allowable stress and load properties (static and variable loads) of threaded connectors are related to factors such as whether the connection is tightened, whether the pre tightening force needs to be controlled, and the material and structural dimensions of the threaded connector.
classification
The grades of stainless steel bolts are divided into 45, 50, 60, 70, and 80. The materials are mainly austenitic A1, A2, and A4, martensitic and ferritic C1, C2, and C4. Their representation methods include A2-70, where "-" represents the bolt material and strength grade before and after.