Common Methods for Special Shaped Steel Cutting for Construction

The common methods for Special Shaped Steel Cutting for Construction (cutting of specially shaped steel for construction purposes) mainly include the following:
Mechanical Cutting:
Plate Shears and Profile Steel Punching Shears: Suitable for cutting thin steel plates, profiled steel sheets, cold-formed purlins, etc., with fast cutting speed, neat cuts, and high efficiency.
Toothless Saws: Capable of cutting various types of profile steel, steel pipes, and steel plates of different shapes. They are suitable for components with lower precision requirements for sawing or for components that require additional material allowance during blanking and subsequent finishing. However, they generate significant noise.
Abrasive Wheel Saws: Suitable for cutting wall-type steel and small steel pipes. They produce smooth cuts with thin burrs that are easy to remove, but they also generate significant noise and dust.
Sawing Machines: Offer high cutting precision and are suitable for cutting various types of profile steel and structural steel components such as beams and columns.
Gas Cutting:
Cutting is performed using multi-head straight-line gas cutting machines, H-beam automatic gas cutting machines, or manual gas cutting. Gas cutting equipment is simple, cost-effective, and offers relatively high production efficiency. It also enables cutting in various spatial positions.
Before gas cutting, oil stains and grease on the steel surface must be removed, and sufficient space must be left underneath to facilitate the expulsion of slag. During cutting, the cutting torch should be moved at a uniform speed, and the shape and process parameters of the cutting oxygen jet should be properly adjusted.
Plasma Cutting:
Utilizes the heat of a high-temperature plasma arc to locally melt (and vaporize) the metal at the workpiece's cut, and then uses the momentum of high-speed plasma to expel the molten metal to form the cut.
It is suitable for cutting various metals that are difficult to cut with oxygen cutting, especially non-ferrous metals (such as stainless steel, aluminum, copper, titanium, and nickel). Plasma cutting offers fast cutting speed, a smooth cutting surface, minimal thermal deformation, and almost no heat-affected zone.
CNC Intersection Cutting:
Automatically calculates and cuts the intersection line holes, intersection line ends, and elbows (segmented bends) at the junctions of steel pipes and tubes.
Each model achieves coordinated control of axes during cutting, with functions for cutting various intersection lines and intersection holes, as well as fixed-angle beveling, fixed-point beveling, and variable-angle beveling. It also features functions for compensating for pipe out-of-roundness and eccentricity.