The Steel Pipe Machine LD-100 is a high-performance cold rolling pipe machine tailored for medium-scale steel pipe production. It integrates advanced rolling technology, intelligent control systems, and robust structural design to optimize the pipe-forming process. Unlike conventional machines, the LD-100 minimizes material waste, reduces production cycles, and maintains consistent pipe quality—making it a cost-effective solution for manufacturers seeking to enhance productivity.
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The LD20x2 abandons the traditional two-roller design and adopts a three-roller pass structure regulated by a slide curve. During the rolling process, the three rollers form a dynamically adjustable pass that changes in a "large-small-large" cycle. When the taper die reaches its maximum size, the rollers do not contact the tube shell, creating a safe interval for the shell’s rotation and feeding; when the taper die shrinks to the minimum, the pass precisely shapes the tube shell to the required finished size. This design effectively reduces the risk of uneven deformation of the tube shell and improves the straightness of the finished pipe.
The equipment’s transmission system consists of a high-power main motor, a precision reducer, and a brace connecting rod structure, which jointly drive the rocker system (OABCD) to perform stable swing movements. The upper and lower connecting rods further convert this swing into regular reciprocating linear motion of the nose sleeve and roller frame along the rolling line. The difference between the reciprocating strokes of the components forms the rolling stroke, and each reciprocating cycle completes one rolling process. This mechanical structure ensures low energy consumption during operation and minimizes wear, extending the equipment’s service life to over 8 years under normal maintenance.
The LD20x2 relies on two core technologies to ensure precision: first, the slide curve’s precise control of the three-roller pass, which avoids dimensional deviations caused by manual adjustment; second, the automatic feeding structure that can rotate the tube shell at a specified angle (adjustable between 5° and 15°) and push it forward by a fixed length (2mm to 8mm per feed) after each rolling cycle. These two technologies work together to ensure that the finished pipe’s inner diameter, outer diameter, and wall thickness meet the design requirements without secondary processing.
The equipment is compatible with a variety of pipe materials, including 304/316 stainless steel, copper alloys (such as H62 brass), aluminum alloys (such as 6061 aluminum), carbon steel (such as Q235), and alloy steel (such as 40Cr). It can handle both soft non-ferrous metals and hard alloy steels by adjusting the rolling pressure, feeding speed, and pass size — eliminating the need for enterprises to purchase multiple sets of equipment for different materials, thus reducing initial investment costs.
Each rolling cycle of the LD20x2 takes only 8-12 seconds, and the continuous operation mode allows it to achieve a production capacity of 500-800 pieces per shift (based on 8-hour working time and standard pipe length of 6 meters). Compared with similar multi-roller cold rolling machines on the market, its efficiency is improved by about 15%-20%, which helps enterprises increase output while controlling labor costs.
The LD20x2 is equipped with a digital control panel that displays real-time parameters such as rolling pressure, feeding length, reciprocating speed, and temperature of key components. Operators can set or adjust parameters with one click, and the system will automatically alarm for abnormal conditions (such as excessive pressure or insufficient lubrication). This design reduces the requirement for operators’ professional skills — new employees can master basic operations after 3 days of training, lowering the enterprise’s talent training costs.
In the copper pipe industry, the LD20x2 is used to process small-diameter copper pipes for air conditioners, refrigerators, and heat exchangers. Its high precision ensures that the copper pipes have uniform wall thickness, which improves the heat transfer efficiency of the equipment. In the aluminum pipe industry, it is applied to the production of aluminum alloy pipes for automobile radiators and architectural decorative pipes — the equipment’s gentle rolling process avoids cracks on the surface of aluminum pipes (a common problem with traditional rolling machines).
For the aerospace and medical industries, the LD20x2 can process thin-walled titanium alloy pipes (with a minimum wall thickness of 1mm). Titanium alloy has high strength but poor plasticity, and the equipment’s three-roller pass design reduces the deformation stress of the material, ensuring that the titanium alloy pipes have no internal defects and meet the biocompatibility requirements of medical implants.
In the food processing industry, the LD20x2 is used to produce 304 stainless steel pipes for food delivery pipelines and storage tanks. The equipment’s rolling process does not require cutting fluids (adopting dry rolling technology), so the inner wall of the pipe is free of oil stains and impurities, complying with the FDA (Food and Drug Administration) and EU 10/2011 food contact material standards.
For the oil and gas industry, the LD20x2 processes 316L stainless steel pipes for high-pressure transmission pipelines. The equipment’s precise control of wall thickness ensures that the pipes can withstand a working pressure of up to 20MPa, and the smooth inner wall reduces the resistance of fluid transmission, improving the efficiency of oil and gas transportation.
In the automotive manufacturing industry, the LD20x2 produces 40Cr alloy steel pipes for automobile drive shafts and hydraulic cylinders. The equipment’s rolling process enhances the material’s tensile strength (up to 900MPa) and fatigue resistance, extending the service life of automotive components. In the machinery industry, it is used to process alloy steel pipes for bearing sleeves and gear shafts — the high straightness of the finished pipes reduces the difficulty of subsequent machining.
The LD20x2 has strong material adaptability and can process a variety of metals, including: non-ferrous metals (copper, aluminum, titanium and their alloys), stainless steel (304, 316, 321, etc.), carbon steel (Q235, Q345, etc.), and alloy steel (40Cr, 20CrMnTi, etc.). For materials with special properties (such as high-hardness alloy steel or thin-walled titanium alloy), Jiangsu Yongteli Machinery can provide customized pass design and parameter adjustment services to ensure processing quality.
The production capacity of the LD20x2 depends on the size of the processed pipe and the working system. Under the standard working condition (8-hour shift, processing 15mm outer diameter, 3mm wall thickness stainless steel pipes with 6-meter length), the equipment can produce 500-800 pieces per shift. If the enterprise adopts a 12-hour shift system and optimizes the feeding speed (within the range allowed by material properties), the daily output can reach 1,200-1,500 pieces. The specific capacity can be adjusted according to the enterprise’s production needs and the technical team of Yongteli can provide capacity optimization plans.
The LD20x2 achieves high precision through three core technologies: 1. Three-roller pass with slide curve adjustment: The slide curve precisely controls the change of the pass size during the rolling cycle, avoiding dimensional deviations caused by manual adjustment; 2. Automatic feeding mechanism: It can rotate the tube shell at a fixed angle and push it forward by a fixed length, ensuring uniform processing of each section of the pipe; 3. Real-time monitoring system: The digital control panel monitors the rolling pressure, temperature, and stroke in real time, and automatically adjusts parameters when deviations occur. These technologies together ensure that the finished pipe’s outer diameter tolerance is ≤ ±0.02mm and wall thickness tolerance is ≤ ±0.01mm.
Jiangsu Yongteli Machinery provides comprehensive after-sales support for the LD20x2, including: 1. Installation and commissioning: Professional engineers go to the customer’s site to install and debug the equipment, and ensure normal operation within 7 days; 2. Technical training: Provide 3-day on-site training for operators and maintenance personnel, covering operation, parameter adjustment, and daily maintenance; 3. Spare parts supply: Establish a spare parts warehouse in major industrial areas, and provide urgent spare parts within 48 hours for equipment failures; 4. Regular maintenance: Conduct annual on-site inspection and maintenance guidance for the equipment to extend its service life; 5. Technical upgrade: Provide free technical upgrade services for the equipment’s control system within 3 years of purchase, keeping it in line with the latest industry standards.
The LD20x2 abandons the traditional two-roller design and adopts a three-roller pass structure regulated by a slide curve. During the rolling process, the three rollers form a dynamically adjustable pass that changes in a "large-small-large" cycle. When the taper die reaches its maximum size, the rollers do not contact the tube shell, creating a safe interval for the shell’s rotation and feeding; when the taper die shrinks to the minimum, the pass precisely shapes the tube shell to the required finished size. This design effectively reduces the risk of uneven deformation of the tube shell and improves the straightness of the finished pipe.
The equipment’s transmission system consists of a high-power main motor, a precision reducer, and a brace connecting rod structure, which jointly drive the rocker system (OABCD) to perform stable swing movements. The upper and lower connecting rods further convert this swing into regular reciprocating linear motion of the nose sleeve and roller frame along the rolling line. The difference between the reciprocating strokes of the components forms the rolling stroke, and each reciprocating cycle completes one rolling process. This mechanical structure ensures low energy consumption during operation and minimizes wear, extending the equipment’s service life to over 8 years under normal maintenance.
The LD20x2 relies on two core technologies to ensure precision: first, the slide curve’s precise control of the three-roller pass, which avoids dimensional deviations caused by manual adjustment; second, the automatic feeding structure that can rotate the tube shell at a specified angle (adjustable between 5° and 15°) and push it forward by a fixed length (2mm to 8mm per feed) after each rolling cycle. These two technologies work together to ensure that the finished pipe’s inner diameter, outer diameter, and wall thickness meet the design requirements without secondary processing.
The equipment is compatible with a variety of pipe materials, including 304/316 stainless steel, copper alloys (such as H62 brass), aluminum alloys (such as 6061 aluminum), carbon steel (such as Q235), and alloy steel (such as 40Cr). It can handle both soft non-ferrous metals and hard alloy steels by adjusting the rolling pressure, feeding speed, and pass size — eliminating the need for enterprises to purchase multiple sets of equipment for different materials, thus reducing initial investment costs.
Each rolling cycle of the LD20x2 takes only 8-12 seconds, and the continuous operation mode allows it to achieve a production capacity of 500-800 pieces per shift (based on 8-hour working time and standard pipe length of 6 meters). Compared with similar multi-roller cold rolling machines on the market, its efficiency is improved by about 15%-20%, which helps enterprises increase output while controlling labor costs.
The LD20x2 is equipped with a digital control panel that displays real-time parameters such as rolling pressure, feeding length, reciprocating speed, and temperature of key components. Operators can set or adjust parameters with one click, and the system will automatically alarm for abnormal conditions (such as excessive pressure or insufficient lubrication). This design reduces the requirement for operators’ professional skills — new employees can master basic operations after 3 days of training, lowering the enterprise’s talent training costs.
In the copper pipe industry, the LD20x2 is used to process small-diameter copper pipes for air conditioners, refrigerators, and heat exchangers. Its high precision ensures that the copper pipes have uniform wall thickness, which improves the heat transfer efficiency of the equipment. In the aluminum pipe industry, it is applied to the production of aluminum alloy pipes for automobile radiators and architectural decorative pipes — the equipment’s gentle rolling process avoids cracks on the surface of aluminum pipes (a common problem with traditional rolling machines).
For the aerospace and medical industries, the LD20x2 can process thin-walled titanium alloy pipes (with a minimum wall thickness of 1mm). Titanium alloy has high strength but poor plasticity, and the equipment’s three-roller pass design reduces the deformation stress of the material, ensuring that the titanium alloy pipes have no internal defects and meet the biocompatibility requirements of medical implants.
In the food processing industry, the LD20x2 is used to produce 304 stainless steel pipes for food delivery pipelines and storage tanks. The equipment’s rolling process does not require cutting fluids (adopting dry rolling technology), so the inner wall of the pipe is free of oil stains and impurities, complying with the FDA (Food and Drug Administration) and EU 10/2011 food contact material standards.
For the oil and gas industry, the LD20x2 processes 316L stainless steel pipes for high-pressure transmission pipelines. The equipment’s precise control of wall thickness ensures that the pipes can withstand a working pressure of up to 20MPa, and the smooth inner wall reduces the resistance of fluid transmission, improving the efficiency of oil and gas transportation.
In the automotive manufacturing industry, the LD20x2 produces 40Cr alloy steel pipes for automobile drive shafts and hydraulic cylinders. The equipment’s rolling process enhances the material’s tensile strength (up to 900MPa) and fatigue resistance, extending the service life of automotive components. In the machinery industry, it is used to process alloy steel pipes for bearing sleeves and gear shafts — the high straightness of the finished pipes reduces the difficulty of subsequent machining.
The LD20x2 has strong material adaptability and can process a variety of metals, including: non-ferrous metals (copper, aluminum, titanium and their alloys), stainless steel (304, 316, 321, etc.), carbon steel (Q235, Q345, etc.), and alloy steel (40Cr, 20CrMnTi, etc.). For materials with special properties (such as high-hardness alloy steel or thin-walled titanium alloy), Jiangsu Yongteli Machinery can provide customized pass design and parameter adjustment services to ensure processing quality.
The production capacity of the LD20x2 depends on the size of the processed pipe and the working system. Under the standard working condition (8-hour shift, processing 15mm outer diameter, 3mm wall thickness stainless steel pipes with 6-meter length), the equipment can produce 500-800 pieces per shift. If the enterprise adopts a 12-hour shift system and optimizes the feeding speed (within the range allowed by material properties), the daily output can reach 1,200-1,500 pieces. The specific capacity can be adjusted according to the enterprise’s production needs and the technical team of Yongteli can provide capacity optimization plans.
The LD20x2 achieves high precision through three core technologies: 1. Three-roller pass with slide curve adjustment: The slide curve precisely controls the change of the pass size during the rolling cycle, avoiding dimensional deviations caused by manual adjustment; 2. Automatic feeding mechanism: It can rotate the tube shell at a fixed angle and push it forward by a fixed length, ensuring uniform processing of each section of the pipe; 3. Real-time monitoring system: The digital control panel monitors the rolling pressure, temperature, and stroke in real time, and automatically adjusts parameters when deviations occur. These technologies together ensure that the finished pipe’s outer diameter tolerance is ≤ ±0.02mm and wall thickness tolerance is ≤ ±0.01mm.
Jiangsu Yongteli Machinery provides comprehensive after-sales support for the LD20x2, including: 1. Installation and commissioning: Professional engineers go to the customer’s site to install and debug the equipment, and ensure normal operation within 7 days; 2. Technical training: Provide 3-day on-site training for operators and maintenance personnel, covering operation, parameter adjustment, and daily maintenance; 3. Spare parts supply: Establish a spare parts warehouse in major industrial areas, and provide urgent spare parts within 48 hours for equipment failures; 4. Regular maintenance: Conduct annual on-site inspection and maintenance guidance for the equipment to extend its service life; 5. Technical upgrade: Provide free technical upgrade services for the equipment’s control system within 3 years of purchase, keeping it in line with the latest industry standards.
