A deformed bar is a round bar with chevron and fins. to strengthen the bonding between the concrete and steel The steel has strong adhesion to the surface. This type of steel has a diameter of 10-40 millimeters and a length of 10 and 12 meters, suitable for reinforced concrete construction that requires strength, such as bridges, condominiums, high-rise buildings or dams, etc.
This type of steel can be classified into two quality classes, SD40 and SD50.
Considerations for purchasing deformed bars
1. The texture and surface of the steel must be smooth. except for the chevron area, no rust, no crack, and no split.
2. There must be a chevron at equal intervals. or evenly throughout the line The chevron opposite each other must be of the same size and shape.