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Precision Rolled Threaded Steel
Screw-thread steel bars for the prestressing of concrete（High Strength Thread Bar）:
Threaded steel bars for prestressed concrete (also called precision rolled threaded steel) are large-diameter, high-strength, high-dimensional precision straight bars with discontinuous external threads rolled on the entire steel bar. The steel bar can be connected with a connector with an internal thread or anchored with a threaded nut at any cross section.
ADVANTAGES
High strength: high yield strength and tensile strength, stable and reliable quality. Common strength grades include PSB785, PSB830, PSB930, PSB1080, etc., which can meet the needs of different large-scale projects.
High precision: high dimensional accuracy, uniform thread specifications, regular tooth shape, ensuring the reliability and construction accuracy of connection with anchors.
Good machinability: good cold bending and welding performance, convenient for cutting, bending and connection at the construction site. Save steel bars, reduce component area and weight.
Strong adaptability of connection method: simple connection and anchoring, strong adhesion, safe and reliable tension anchoring, and convenient construction.
High corrosion resistance: generally surface anti-corrosion treatment is carried out, such as galvanizing, plastic coating, etc., which can effectively resist external environmental erosion and extend service life.
USE
They are mainly used for prestressed construction of large concrete structures. Prestress is applied by tensioning, and the elastic retraction of the steel bars is used to generate pre-compressive stress on the concrete, thereby improving the crack resistance, durability and bearing capacity of the concrete structure.
SPECIFICATIONS
Specifications of precision rolled threaded bar:
Prestressed concrete rebar is divided into grades according to yield strength, and its code is "PSB" plus the specified minimum yield strength. P, S, and B are the first letters of Prestressing, Screw, and Bars, respectively. For example: PSB830 represents a steel bar with a minimum yield strength of 830 MPa.
PSB500, PSB785, PSB830, PSB930, PSB1200, PSB1080/15mm, 20mm, 25mm, 28mm, 32mm, 36mm, 40mm, 50mm, 75mm and other specifications of precision rolled threaded steel.
The product parameter table is as follows:
Product Parameters | |||
Nominal Diameter / mm | Level | Nominal cross-sectional area / mm2 | Theoretical weight kg/m |
Φ15 | PSB830 | 177 | 1.4 |
Φ20 | PSB500 | 314 | 2.47 |
Φ25 | PSB500 / 830 / 930 / 1080 | 491 | 4.1 |
Φ32 | PSB830 / 930 / 1080 | 804 | 6.65 |
Φ36 | PSB830 / 930 / 1080 | 1080 | 8.41 |
Φ40 | PSB830 / 930 / 1080 | 1257 | 10.34 |
Φ50 | PSB830 / 930 / 1080 | 1963 | 16.28 |
PACKAGE
we support customized packaging.
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