Square steel bending marking ruler, with laser engraving for precise and wear-resistant graduations, and angle positioning accurate to the millimeter level. Suitable for bending marking of various profiles such as square steel and round tubes. Made of high-hardness alloy material, it is rust-proof and durable. Simple to operate, it is an accurate processing tool for metal processing, construction, and sheet metal industries.

It is not an ordinary ruler; it is a "precise marking assistant" specifically designed for bending operations: Its core function directly addresses the pain points in processing - it can quickly mark 90° right-angle bending lines for square tubes and square bars, and also easily draw the contour lines for circular arc bending. Throughout the process, no complex calculations are required. Just place the ruler against the material, follow the scale lines with a single stroke, and you will obtain precise bending marks. Even beginners can draw them accurately at first attempt.In scenarios such as metal processing, steel structure assembly, and pipeline installation, do you ever encounter problems like inaccurate bending angles of square steel and cumbersome marking procedures? The square steel bending marking ruler, with its core advantages of "precise angle positioning + one-step bending marking", has become a "craftsmanship tool" for welders, sheet metal workers, and construction workers, making metal bending operations free from errors and doubling the efficiency.
Its laser-engraved scale ensures accuracy: The scale on the ruler is engraved by laser technology, which is clear and durable. Even when used in environments with metal debris and oil stains for a long time, the scale will not be worn or blurred. The angle indication is precise to 1°, allowing for quick positioning of bending angles for different types of materials such as square steel, round pipes, and angle steel. From a 45° bevel to a 135° large-angle bending, it can achieve millimeter-level precision, completely solving the problem of angle deviation caused by "estimating by experience" with traditional marking tools.
The multi-functional integrated design is a "multi-purpose tool" for metal processing: It can be used for square steel bending marking, and when combined with different accessories, it can also be adapted for round pipe bending, angle positioning for steel structures, and other scenarios. The multi-hole design on the ruler body can assist in fixing the workpiece and prevent it from sliding during marking. The built-in angle reference table visualizes the calculation formulas for common bending angles, even for beginners, they can quickly master the logic of marking complex angles without relying on cumbersome trigonometric function calculations.
The applicable scenarios cover the entire metal processing field: On construction sites, it is the "standard ruler" for angle positioning of steel structures, ensuring precise angles for beams and columns; in the sheet metal workshop, workers use it to make cases and cabinets for square steel bending, achieving one-time molding without rework; during pipeline installation, it can be used to make 90° and 45° bends for galvanized pipes and steel pipes, making the pipeline layout neat and beautiful.
Durability withstands high-intensity operations: The main body is made of high-hardness alloy material, resistant to dropping and wear, even if dropped from a high place or collided with metal workpieces, it will not deform or damage; the surface is treated with anti-rust treatment, and it is not prone to rust even when in contact with metal processing fluids and rainwater for a long time. It is a "hardcore tool" that can perform stable service in outdoor construction sites, workshops, and other harsh environments.
For professional welders, it is a "secret weapon" for improving welding accuracy, ensuring that the angles at the weld seams are aligned and the force is uniform; for steel structure engineers, it can be used to quickly complete the angle layout of the framework, shortening the construction period; for individual entrepreneurs in hardware processing, it can be used to undertake more high-demand orders with precise craftsmanship, enhancing competitiveness.
What's more, its operation convenience is commendable: The ruler body has a moderate weight, allowing for easy operation with one hand; the edges are rounded to avoid hand injuries; when using it, simply press the ruler body against the workpiece and align the scale to complete the marking. The learning cost is almost zero.
Whether in professional processing scenarios that pursue ultimate precision or daily metal operations that emphasize efficiency, this square steel bending marking ruler can perform perfectly. With the "precision" of laser-engraved scales, the "practicality" of multi-functional design, and the "durability" of alloy material, it redefines the process standard for metal bending marking, making each bending operation as "copy and paste" as precise as possible. It is an indispensable "angle master" for metal processing practitioners.