square tube making machine

Product Overview

This lock‑seam square tube roll forming machine is a versatile multi‑purpose roll forming equipment. It adopts the mechanical lock‑seam forming process to produce hollow square profiles with interlocked mechanical seam, no welding required. It can process galvanized steel, prepainted color‑coated steel and galvalume steel with thickness ranging from 0.5 mm to 1.2 mm

The machine is capable of manufacturing two categories of finished products:

1. Lock‑seam square rainwater downpipes for gravity rainwater drainage systems;
2. Light‑gauge steel framing square profiles, for non‑load‑bearing and light‑load decorative & auxiliary steel frame structures.

It is widely used in industrial construction, building decoration, exhibition & display engineering, modular building and agricultural facility manufacturing.

Key Features

1. Lock‑Seam Mechanical Interlock Forming The profile seam is mechanically crimped and interlocked without welding. It delivers good dimensional stability, smooth surface and consistent cross‑section. For drainage application, the interlock seam provides reliable water‑tight performance for gravity‑flow rainwater. For light‑frame profile use, it forms rigid hollow square section for decorative and auxiliary framing.
2. High‑Precision Multi‑Stand Roll Forming Station Heavy‑duty roll forming stands with precise roller tooling. Stable forming performance, high dimension accuracy. Supports customizable square sizes such as 80×80 mm, 100×100 mm and other square profiles as per customer requirement.
3. Flying Saw Online Cut‑off System Equipped with travelling flying‑saw cutting unit. Continuous online cutting without stopping production line. Encoder‑based length measuring, automatic cutting to pre‑set length, clean and flat cutting end face, high production efficiency.
4. Full‑Automatic PLC Control System PLC control with touch‑screen HMI. Parameters including profile length, production speed can be set and stored. Easy‑to‑operate, low labor cost, stable continuous operation.
5. Heavy‑Duty Machine Structure & Transmission Robust welded steel base frame, gear‑box driven transmission system, built for long‑hour continuous high‑speed production. Safety guard covers for operator protection.
6. Wide Raw Material Compatibility Compatible with galvanized steel, prepainted color‑coated steel, galvalume steel coil. Can produce both drainage downpipes and light‑gauge square framing profiles.

Production Workflow

Detailed description

1.Ectric decoiler:Used to stand the steel coil and uncoil, keep them working stably. Manual and automatic options available

2.Sheet guide device:Leveling machine ensures the flatness of the raw material

3.Roll forming system : Roller surfaces polish, hard plating dealing Polished surface and heat treatment towards molds can keep the molding plate surface smooth and not easy to be marked when it is being stamped

4.Main motor:The main motor provides power to the forming rollers through chains or gears

6.Fly saw cutting system:Servo tracking enables fast and precise cutting of products to the target length, resulting in a smooth, burr-free cut that is less prone to deformation.

7.PLC control system : Button press and screen touch operate Target piece`s length is adjustable Work automatically The system operate easily

8.Pump station Hydraulic oil into the hydraulic oil tank, the pump drives the cutter work Hydraulic oil: 46# Oil add capacity: oil add 3/4 of box capacity Oil pressure: 8-10 MPa.

We offer customization services for our clients’ various designs.

Below is product customization information for reference.