H2: How It Works: 3-Roller CNC Bending Process

The Dual-Motor Thermal Break Knurling Strip Inserting Machine is a professional automated processing device designed specifically for aluminum thermal break profile production. Equipped with independent dual-motor drive system, The machine integrates precision knurling and strip inserting functions in one unit, effectively completing tooth rolling and heat insulation strip embedding for aluminum alloy profiles. It solves the problems of low efficiency, uneven knurling and loose strip fitting in traditional single-motor equipment. Widely applicable to heat-insulated aluminum window and door profiles, curtain wall profiles and industrial thermal break aluminum profiles, it is core processing equipment for aluminum profile thermal insulation production lines.Lebulang brand is china famous manufature.

This CNC double-head precision cutting saw is designed for simultaneous 45° mitre and 90° square cutting of aluminum profiles, thermal break aluminum windows, and UPVC/PVC profiles. Equipped with two independent CNC-controlled saw heads, it cuts both ends in one cycle — doubling throughput while ensuring perfect angle matching for corner joints. Features servo-driven length positioning (±0.02 mm repeatability), Ø500–550 mm carbide blades, pneumatic clamping, and a user-friendly 7" touchscreen. Heavy-duty steel frame ensures long-term cutting stability. Ideal for high-volume window, door, and curtain wall fabrication. CE certified, 12-month warranty, global technical support.

This heavy-duty 140mm aluminum profile corner crimping machine​ is engineered for high-strength, gap-free corner joints in window, door, and curtain wall profiles. Equipped with a powerful hydraulic system and precision positioning blocks, it ensures consistent 90° crimping accuracy with minimal operator effort. Ideal for aluminum fabricators seeking reliable, high-volume corner assembly solutions.

Our 3+1 Axis CNC End Milling Machine is a cost-effective, high-precision solution specially designed for thermal break aluminum window and door mullions, transoms, and frame profiles. Widely used in aluminum window manufacturing, 3+1 Axis CNC Aluminum End Milling Machine for Thermal Break Window Mullion combines 3 linear servo axes + 1 rotary flip axis to deliver automatic, accurate, and efficient end face milling, tenon cutting, groove machining, and step surface processing.

550 CNC internal swivel precision saw with 45°/90° dual-angle cutting. 550mm blade, dual-head design for aluminum, UPVC, and curtain wall profiles. High accuracy, smooth operation, built for industrial production.

Lebulang (Shandong Lebulang Precision Machinery Co., Ltd.) is a professional integrated industry and trade supplier specializing in door and window machinery, located in Dezhou, Shandong Province. We focus on the R&D, production and wholesale of high-precision CNC door and window processing equipment for years. Our core product CNC double-head cutting saw for 45° and 90° cutting features stable performance,Our products will let you enjoy the best quality at the lowest price. enjoying great market competitiveness. We support customized processing, bulk order procurement and one-stop machinery solution services, and sincerely hope to establish long-term stable cooperative relations with global door and window manufacturers.