Precision Rolled Thread Bar

Precision Rolled 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.

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ADVANTAGES

The precision-rolled anchor has the following advantages:

1. Reasonable structural parameters, suitable for different prestressed structural parts such as railways, highways, bridges, etc.;

2. Reasonable setting of heat treatment process specifications to achieve reliable technical performance;

3. Adopting new material processes to obtain high and stable tensile strength.

4. Convenient on-site use and fast installation improve the user's production efficiency and reduce its production cost.

USE

Application areas:

Highway bridges, railway bridges, urban interchanges, urban light rail, high-rise buildings, water conservancy and hydropower dams, port terminals, rock slope anchoring, foundation reinforcement, tunnel mine top anchoring, etc.

SPECIFICATIONS

Specifications of precision rolled threaded steel:

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.

product parameter:

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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