Steel Pipe Machine LG-30-HL

Product Overview

The Steel Pipe Machine LG-30-HL is a flagship model in the LG two-roll series, designed for producing high-precision thin-wall tubes. Unlike standard rolling equipment, this machine integrates advanced mechanical, electrical, and lubrication systems to meet strict quality requirements for tube dimensions, surface finish, and material consistency. It is engineered to handle diverse raw materials and deliver consistent performance, making it a preferred choice for manufacturers seeking efficiency and accuracy in cold rolling processes.

Product Features

Mechanical System Components

The mechanical structure of the LG-30-HL is modular and durable, consisting of key components that ensure stable operation:

· Feeding & Discharging Mechanisms: The feeding device enables precise hollow material feeding with a length range of 1.5～5 m, while the discharging device ensures smooth output of finished tubes up to 15 m in length. A rotary feeding mechanism adjusts the hollow’s rotation angle during feeding (45-75 Deg.) and feed length (2～10 mm), optimizing material alignment for rolling.

· Mandrel & Hydraulic Chuck Components: The mandrel component maintains the inner diameter accuracy of tubes, while the hydraulic chuck secures the hollow material tightly during rolling, preventing slippage and ensuring uniform wall thickness.

· Roller & Transmission Parts: Equipped with φ250 mm rollers and a gear driving system with a pitch circle diameter (PCD) of φ224 mm and φ232 mm, the machine delivers consistent rolling force. The main transmission mechanism features a total transmission ratio of 9, paired with a 55 KW main motor to drive the roller carriage efficiently.

Electrical & Lubrication Systems

· Electrical Control System: The machine adopts either servo or direct current (DC) rotate-and-feed mechanisms, enabling precise adjustment of roller carriage stroke rate (40～100 str./min) and stroke length (642 mm). This system ensures real-time monitoring and control of rolling parameters, reducing human error and improving production consistency.

· Lubrication System: A dedicated lubrication system maintains optimal performance of moving parts (e.g., connecting rods, crankshafts) by reducing friction and wear. The 2000 mm-long connecting rod and 320 mm-radius crank, paired with a 160 mm offset distance between crank and slider, work in tandem with lubrication to extend component lifespan.

Key Performance Metrics

· Dimensional Capabilities: For hollow materials, the machine handles an outside diameter of Φ22～58 mm and wall thickness of 1.5～6 mm; finished tubes have an outside diameter of φ15～42 mm and wall thickness of 1～5 mm.

· Rolling Force & Efficiency: It delivers a maximum nominal rolling force of 65 t, suitable for processing rigid materials like alloy steel and stainless steel. The adjustable stroke rate allows manufacturers to balance speed and precision based on material type.

· Center Height: The hollow’s center height is set at 750 mm, aligning with standard production line layouts for seamless integration into existing workflows.

Applications

Industry-Specific Uses

The LG-30-HL Steel Pipe Machine is versatile, catering to multiple industries that require high-precision tubes:

· Automotive & Aerospace: Produces thin-wall stainless steel and alloy steel tubes for fuel lines, hydraulic systems, and aircraft components, where dimensional accuracy and material strength are critical.

· Construction & Infrastructure: Manufactures carbon steel and aluminum tubes for structural supports, plumbing systems, and heating/cooling pipelines, meeting durability standards for long-term use.

· Medical & Precision Engineering: Creates nonferrous metal tubes (e.g., aluminum, copper) and rare metal tubes for medical devices (e.g., surgical instruments) and precision machinery parts, ensuring biocompatibility and tight tolerance control.

Material Compatibility

This machine excels in processing a broad range of materials, including:

· Nonferrous metals (aluminum, copper, brass)

· Stainless steel (304, 316, and other corrosion-resistant grades)

· Alloy steel (chrome-molybdenum steel, high-strength low-alloy steel)

· Rare metals and precision alloys (titanium alloys, nickel-based alloys)
The maximum elongation ratio of rolling depends on the material, but the machine’s adaptive design ensures optimal deformation without compromising material integrity.

FAQ

What materials can the LG-30-HL Steel Pipe Machine process?

The LG-30-HL is compatible with diverse materials, including nonferrous metals (aluminum, copper), stainless steel, alloy steel, black metals, rare metals, and precision alloys. Its adjustable rolling parameters (e.g., stroke rate, rolling force) allow customization for different material hardness and ductility, making it suitable for both common and specialty tube production.

What is the difference between the LG-30-HL and other two-roll cold rolling machines?

Unlike basic two-roll models, the LG-30-HL features a servo/DC rotate-and-feed mechanism (instead of manual adjustment) for precise material control, a higher maximum nominal rolling force (65 t), and a longer roller carriage stroke (642 mm). It also supports longer finished tubes (up to 15 m) and integrates a more advanced electrical control system for real-time parameter monitoring, reducing waste and improving production efficiency.

Does Jiangsu Yongteli provide after-sales support for the LG-30-HL?

Yes. Jiangsu Yongteli offers comprehensive after-sales support for the LG-30-HL, including installation guidance, operator training, spare parts supply, and maintenance services. The company’s 40 years of experience in cold tube rolling machines ensures that technical issues are resolved quickly, minimizing downtime for manufacturers. Additionally, users can access resources via the “Service & Support” section of Yongteli’s official website, including maintenance manuals and troubleshooting guides.