Hpb400 Deformed Steel Bar

Description:

A deformed steel bar is a kind of reinforcing steel bar that has a floor sample of ribs, grooves, or indents to enhance the bond with concrete. They are used for a fluctuate of enchancment and structural applications, such as buildings, bridges, roads, dams, and tunnels.



Property & Specification:

High depth

Good plasticity and durability
Easy processing

Friction with concrete is excessive

The specification necessities of the deformed metal bar must be exact in the import and export change contract. Generally, it must encompass the trendy grade (type code), the nominal diameter of the metal bar, the nominal weight (mass), the certain length, and the tolerance cost of the above indicators, etc.

Our country's requirements suggest deformed metal bar sequence with nominal diameters of 6, 8, 10, 12, 16, 20, 25, 32, 40, and 50mm. The size of grant is divided into two types: constant size and double length. The constant size decision vary of my country's export deformed metal bars is 6 to 12m, and the constant size decision vary of Japanese deformed metal bars is 3.5 to 10m. If there is no requirement designated in the contract for home home deformed metal bars, the constant size is normally 9m and 12m.

Dimensions & Appearance

1) Nominal diameter vary and endorsed diameter

The nominal diameter vary of metal bars is 6 to 50mm, and the general endorsed nominal diameters of metal bars are 6, 8, 10, 12, 14, 16, 20, 25, 32, 40, and 50mm.

2) Permissible deviations in floor structure and measurement of ribbed metal bars

The sketch ideas of ribbed metal bar transverse ribs ought to comply with the following regulations:

The attitude β between the transverse rib and the axis of the metal bar need to now not be much less than forty five degrees. When the attitude is now not increased than 70 degrees, the instructions of the transverse ribs on the contrary aspects of the metal bar need to be opposite;

The nominal spacing l of transverse ribs shall no longer be higher than 0.7 instances the nominal diameter of the metal bar;

The attitude α between the facet of the transverse rib and the floor of the metal bar shall no longer be much less than forty five degrees;

The whole hole (including the width of the longitudinal ribs) between the ends of the transverse ribs on two adjoining surfaces of the metal bar must now not be increased than 20% of the nominal circumference of the metal bar;

When the nominal diameter of the metal bar is no longer increased than 12mm, the relative rib location need to now not be much less than 0.055; when the nominal diameter is 14mm and 16mm, the relative rib location have to no longer be much less than 0.060; when the nominal diameter is increased than 16mm, the relative rib location need to no longer be much less than 0.065. For the calculation of the relative rib area, please refer to Appendix C.
Ribbed metal bars generally have longitudinal ribs or may additionally no longer have longitudinal ribs;

3) Length and allowable deviation

a. Length

Steel bars are generally delivered in constant lengths, and the particular shipping size must be specific in the contract;

Steel bars can be delivered in coils, and every coil ought to be one metal bar. It is allowed that 5% of the variety of coils in every batch (two coils if much less than two coils) are composed of two metal bars. The disc weight and disc diameter are decided by way of negotiation between the grant and demand parties.

b. Length tolerance

The allowable size deviation of metal bars when delivered to constant size shall no longer be larger than ±25mm;

When the minimal size is required, the deviation is +50mm;

When the most size is required, the deviation is -50mm.

c. Curvature and ends

The ends of the metal bars must be sheared straight, and nearby deformation must no longer have an effect on use.

Packing & Delivery: