Safety rope& Safety Harness & Lifting Sling Sewing

Longsew has been deeply specialized in the field of heavy-duty materials and thick-thread sewing for many years. Leveraging our profound industry expertise and technical heritage, we have emerged as a world-leading manufacturer of large-scale automated pattern sewing machines. Renowned for their exceptional performance and rigorous quality control, Longsew’s automated rope sewing machines have become the preferred choice for climbing rope and safety harness manufacturers worldwide. Our global footprint spans major industrial hubs, from the United States, Germany, and Italy to Singapore, Vietnam, and China.

In high-altitude sports, industrial fall protection, and heavy-duty lifting, there is no room for compromise. Safety ropes, harnesses, and lifting slings are more than just equipment—they are lifelines. The integrity of these products depends entirely on the quality of their stitching, where every reinforcement pattern and joint must withstand extreme tensile forces.

The Challenge of Heavy-Duty Sewing Processing：multi-layer high-tenacity webbing and thick specialized threads requires more than just power; it requires absolute precision. Manual sewing often struggles with consistency, leading to potential weak points and high labor costs.

The Ultimate Solution for Safety Equipment Manufacturing Longsew’s automated heavy-duty sewing machines are specifically engineered to meet these rigorous demands.

The LS273-2010 series combines Durkopp Adler’s robust hook technology with Dahao’s precision CNC control. Specifically designed for ultra-thick thread applications, it delivers superior stitch integrity on safety ropes, lifting slings, and heavy-duty harnesses. With its 200x100mm sewing area and interchangeable clamp system, this series provides manufacturers with the perfect balance of massive power and programmable versatility for all industrial safety products.

Engineered for maximum penetration and thread capacity, the LS733-3020 features a KSP7-31 shuttle hook that holds 6x more thread than conventional models. This computerized powerhouse utilizes the Dahao CNC system to deliver precise, programmable stitching on ultra-hard materials. With versatile clamping and expandable sewing fields (X: up to 800mm, Y: up to 400mm), it is the premier choice for manufacturing safety harnesses, crane slings, and specialized recovery straps where durability is non-negotiable.

LS733-5020 features the KSP7-31 jumbo shuttle hook, offering 6x the thread capacity to ensure uninterrupted production on the thickest materials. Controlled by the advanced Dahao CNC system, its 500x200mm sewing field delivers unmatched precision for heavy-duty lifting slings, military rigging, and fall protection systems where strength is paramount.

Engineered for industrial-scale efficiency, the LS300 series integrates a massive 6x rotary hook to handle heavy threads with minimal interruption. We offer a versatile range of sewing fields—from the compact 2010 to the expansive 5020 model—alongside custom-engineered sizes to meet specific requirements. It is widely trusted for producing critical safety equipment, including full-body harnesses, crane slings, and tactical gear, ensuring superior durability in every stitch.