Prestressing Thread Bar

Characteristics of Prestressing Thread Bar:

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.

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ADVANTAGES

Core advantages of Prestressing Thread Bar:

Precision rolled threaded steel can be directly matched with special nuts for anchoring, without welding or threading, and has a tensile strength of 835MPa~1230MPa, which is more than 30% higher than ordinary rebar (HRB500 grade about 630MPa), and is suitable for lifeline projects that require long-term stable load-bearing or dynamic loads.

USE

Prestressing Thread Bar are further rolled by a high-precision rolling mill on the basis of hot-rolled ribbed steel bars. They have fine-rolled threads on their surface and can be closely matched with anchors, connectors, etc. 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

Prestressing Thread Bar

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

Mechanical properties table:

Level	Yield Strength /Mpa	Tensile Strength /Mpa	Elongation after Fracture A/%		Total elongation at maximum force A/%	Stress Relaxation Properties
						Initial Stress	Stress relaxation rate after 1000h /%
	Not less than
PSB785	785	980		7	3.5	0.8R	≤3
PSB830	830	1030		6
PSB930	930	1080		6
PSB1080	1080	1230		6
Note: When there is no obvious yield, the specified non-proportional elongation strength is used instead.

PACKAGE

we support customized packaging.

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