Xinlian

In daily life, several construction fasteners are often used to access two separate components such as rings and rings. In the field of construction engineering, firmware is also a very important auxiliary tool for construction operations. It is mainly divided into new firmware, steel pipe hand frame firmware, cast steel firmware, T-shaped building firmware, concrete pillow firmware, wooden pillow firmware, steel rail firmware, force firmware, etc. Among them, the steel hand frame is a typical construction operation part, and its main function is to fix the steel hand frame. Let us have a detailed understanding of the basic knowledge and precautions related to the fixed construction fasteners.

Steel Pipe Building Fasteners

Definition and classification of fasteners for 1. steel pipe construction

The steel building fastener is an access component between the rail and the rail pillow. Its function is to fix the rail on the rail pillow, maintain the gauge, and prevent the rail from moving vertically and horizontally relative to the rail pillow. It is often used in construction operations. Fixed steel hand frame with an outer diameter of 48mm. The main firmware commonly used in domestic construction projects are right-angle firmware (cross firmware and directional firmware), rotating firmware (movable firmware and general firmware), docking firmware (single-word firmware and direct firmware).

(1) right angle fastener: access to the vertical cross steel pipe fastener.

(2) Rotating firmware: two firmware that intersect the steel pipe at any angle are connected.

(3) Docking firmware: Connect the firmware of two butt steel pipes.

Quality standard for 2. steel pipe building fasteners

Steel pipe building fasteners are mainly used for peripheral protection structures, operation platforms, safety protection railings, formwork supports, foundation pit supports and other safety-related protection structures in construction, electric power, municipal administration, water conservancy, chemistry, metallurgy, coal, ships and other projects. The parts play an important role in various safety projects and protection work, so the quality of steel pipe hand frame fasteners is related.

Matters needing attention in the use of 3. steel pipe building fasteners

In order to improve the quality of firmware products and the safety of the process, not only to strictly check the quality of firmware products, but also to strictly manage the use of firmware. Proper use not only helps to improve job safety, but also helps to extend the life of the firmware. The following 5 points of steel pipe hand frame fasteners should be strictly observed and mastered by the operation unit.

1. Before the operation of fastener steel pipe formwork, an operation plan shall be formulated, and a relatively strict and detailed operation plan shall be formulated. If the plan is not well formulated, unpredictable safety incidents may occur during the operation.

2. The steel pipes and firmware used to install the firmware template bracket shall be sampled and inspected before use. Whether the quality and appearance of the steel pipes and firmware meet the standards shall be sampled and inspected. The sampling quantity shall be carried out according to relevant regulations, and the sampling inspection shall be carried out according to a certain proportion. Those that fail the inspection or inspection shall not be used.

3. Always check the appearance quality of the firmware. The surface of the firmware should be anti-rust treated (not coated with asphalt), the paint should be uniform and beautiful, and there is no paint or old iron. The contact part between the firmware and the steel pipe shall not have oxide scale, and the cumulative oxidation area of other parts shall not exceed 150 mm2. It is forbidden to use cracks, deformation or bolt with slide to prevent operation failure and accident.

4. The joint surface of the building fastener and the steel pipe is strictly formed to ensure the anti-skid and tensile performance requirements of the firmware. The movable part can be flexibly rotated, and the distance between the two rotating surfaces of the rotating firmware is less than 1mm.

5. The working load of the working layer shall meet the design requirements, shall not be overloaded, and shall support a certain weight. The hand frame shall not be connected to the template support, and certain treatment shall be carried out during the connection to ensure the reasonable bearing weight of the firmware.