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Understand the steel connection mode and what are the requirements?

Understand the steel connection mode and what are the requirements?

The welding methods of steel bars include resistance welding, flash butt welding, electroslag pressure welding, gas pressure welding and arc welding. The welding methods, tools and welded steel bars are different, as follows:

2024/03/01

What if the steel bar forming size is not allowed?

What if the steel bar forming size is not allowed?

When the error of each part of the formed steel bar exceeds the tolerance value of the quality standard, it shall be treated separately according to the force characteristics of the steel bar. If the position of the bending starting point of the bent-up reinforcement is slightly deviated or the bending angle is slightly inaccurate, technical appraisal shall be used to determine whether it can be used. If there is a significant impact on the structural performance, or the steel bar cannot be installed (such as the length or height of the steel bar exceeds the template size), it must be reworked: if it is necessary to re-open the bending position directly during rework, it is limited to reworking the Class I steel bar once, and the bending position should be carefully checked for excessive deformation or cracks.

2024/02/09

Steel surface corrosion is more serious, how to deal?

Steel surface corrosion is more serious, how to deal?

The red-brown rust spots on the reinforcement shall be removed by manual or mechanical method. The wire rod reinforcement can be descaled by cold drawing or straightening process. The formed rebar and coarse rebar shall be derusted by special derusting machine. For serious corrosion, rust skin peeling, due to the pit. Spot damage section, should be degraded to use.

2024/02/06

Process steps of steel bar processing

Process steps of steel bar processing

On-site elastic line, and cut chisel, clean the joint surface concrete laitance, loose sub, concrete block, etc., finishing the joint catch reinforcement.

2024/01/18

Safety Operation Regulations for Steel Bar Cutting Machine

Safety Operation Regulations for Steel Bar Cutting Machine

The feeding table and the lower part of the cutter are kept horizontal, and the length of the table can be determined according to the length of the processed material.

2024/01/10

China Steel Association: the recent steel market chasing up and down, the initiative steel enterprises to maintain a firm, to avoid stampede

China Steel Association: the recent steel market chasing up and down, the initiative steel enterprises to maintain a firm, to avoid stampede

The China Iron and Steel Association stated that the iron and steel industry is an important basic raw material industry and is vital to the healthy and stable development of the national economy. The high-quality development of the steel industry is the unity of quality and quantity, which is the last word. The national industrial structure determines the consumption structure, the consumption structure determines the variety structure, and the variety structure determines the production structure. Since the Spring Festival, the steel market has been declining rapidly, showing a "three high and three low" situation of high output, high cost, high inventory, low demand, low price and low efficiency. In the short term, the steel market fluctuates greatly, which is not conducive to the orderly and healthy development of the industry.

2024/03/18

Construction Engineering Field: Basic Knowledge of Steel!

Construction Engineering Field: Basic Knowledge of Steel!

Refers to the reinforced concrete and prestressed reinforced concrete steel, its cross section is generally circular, sometimes square with rounded corners. Reinforcement for reinforced concrete refers to the straight or coiled steel used for reinforced concrete reinforcement, and its shape is divided into smooth round reinforcement and ribbed reinforcement.

2024/01/09

What are the standard practices for reinforcement construction?

What are the standard practices for reinforcement construction?

WALL COLUMN REINFORCEMENT LIMBING REINFORCEMENT REQUIREMENTS, LEVEL (stirrup) REINFORCEMENT SPACING MEETINGER DESIGN REQUIREMENTS, LEVEL REINFORCEMENT OR stirrup and each main reinforcement shall be bound in place, and jumping binding is prohibited.

2024/02/23

All that stuff about the rebar connection

All that stuff about the rebar connection

The joint shall be set at the place with small stress as far as possible, and the key parts with large stress of the structure shall be avoided. Avoid the beam end and column end stirrup encryption range during seismic design. If it is necessary to connect in this area, mechanical connection or welding shall be adopted.

2024/02/15

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