Is the finish steel 3 grade steel?
The prestressed concrete thread reinforcing bar (also known as finishing thread reinforcing bar) is a kind of bar with big diameter, high strength and high dimension precision, which is rolled on the whole steel bar. The steel bar is screwed at any cross section with a connector with an internal thread to connect or screw on the threaded nut for anchoring. The fine rolled rebar is widely used in large water conservancy projects, continuous beams and large frame structures in industrial and civil buildings, highways, railways, large and medium span bridges, nuclear power plants and ground anchor projects. The utility model has the advantages of simple connection, simple anchoring, strong adhesive force, safe and reliable tension and tensioning, convenient construction, etc. the steel bar is saved, and the area and the weight of the component are reduced.
The mechanical properties of finishing rolling rebar with GB/T "20065-2006" thread steel bar for prestressed concrete, the prestressed concrete rebar (also known as the finishing rolling rebar, hereinafter referred to as reinforced) the terms and definitions, strength grade, size, shape, weight and tolerances, technical requirements, test method, inspection rules, packaging, mark and quality certificate. The standard applies to the use of hot rolling, after rolling waste heat treatment or heat treatment processes such as the production of prestressed concrete rebar.
The finish rolling thread steel is not 3 grade steel, and the 3 grade finish rolling thread steel is common thread steel.
