hv structural bolt
HV structural bolt, which is often used in sizes of 10 mm and above. Structural steel screw is also known as HV screw because it is a type of super heavy industrial screw which is produced according to DIN6914 standard. Structural steel screws are used in the size of 10 mm, 12 mm in minimum length and 120 mm in maximum length. High-carbon steel grades have been used in the production of the HV steel screw of the structure, which have been raised during the heat hardening process, which has increased the two mechanical factors, tensile and surface hardness.