Damage forms and countermeasures of rolls in used welded pipe machines
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【概要描述】The main forms of damage to the rolls of the used welded pipe machines production line are normal wear and tear and breakage.
Damage forms and countermeasures of rolls in used welded pipe machines
【概要描述】The main forms of damage to the rolls of the used welded pipe machines production line are normal wear and tear and breakage.
- Sort:Information
- Auth:
- Source:
- Release time:2023-02-27 11:30
- Pvs:
The main forms of damage to the rolls of the used welded pipe machines production line are normal wear and tear and breakage.
Normal wear and tear: The rolls are generally inspected regularly with grooved plates during use. Once the wear amount exceeds the limited range, they will be scrapped and replaced. In order to reduce the wear of the rolls, measures such as a reasonable pass pattern and an appropriate and balanced amount of extrusion for each flight can be used to ensure that the rolls are adjusted. Surface rusted roll edges cracked off blocks:
(1) Fine forming roll: When four-roll forming is used, the inner edge of the fine-forming upper roll is easily broken and damaged. This is because the assembled structure of the fine-forming upper roll is used, and the concave surface in the middle of the roll near the guide plate is stressed during the forming process of the used welded pipe machines. The largest and most prone to cracking and falling blocks. This type of damage is by far the most common. After the inner edge of the roll is cracked and damaged, a ring with a thickness of about 40mm (inner diameter 500mm, outer diameter 580mm) can be cut off from the damaged inner edge of the roll, and then a ring of the same size can be machined. After heat treatment, heat sleeved on the roll . Since the force of the upper roll during forming is from the inside to the outside, it has little effect on the force of the ring, so that the overall life of the roll is prolonged, and the use effect is not much different from that of the new roll.
When two-roll forming is used, the outer edge of the finishing roll is easy to crack and damage. Caused by unbalanced distribution. Such damage cannot be repaired, but the thickness of the edge can be appropriately increased to increase its strength.
(2) Side squeezing roller: The reason for the cracking of the upper edge of the side squeezing roller and the damage to the block is: the welding squeezing force during the adjustment of forming welding is too large, or the feed amount on both sides is uneven; The variable stress, especially at the weld of the strip joint, is higher than the base metal of the pipe body, causing the pressure to multiply when the weld passes through, causing the edge of the roll to crack. For the damage to the upper edge of the side extrusion roll caused by excessive force, the strength of the upper structure of the roll can be increased by appropriate thickening, thereby prolonging the service life.
(3) Sizing roller: The main reason for the cracking and damage of the edge of the sizing horizontal roller is: the used welded pipe machines production line is not adjusted in place during the adjustment and introduction of materials, which causes the welding seam to be twisted and skewed, just at the edge of the sizing horizontal roller. Residual external burrs at the butt or stop pipe will squeeze the edge of the roll, causing the edge of the roll to be overstressed and cracked. This damage cannot be repaired, and it is necessary to ensure that the weld is not skewed during shape adjustment to avoid roll damage.
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Time of issue : 2025-04-24
With increasing emphasis on cost control and environmental protection in manufacturing, used pipe welding machines have become a popular choice for SMEs due to their cost-effectiveness and sustainability. This article takes the 76-127 model as an example, providing a comprehensive analysis from multiple dimensions including technical parameters, equipment configuration, quality assessment, market advantages and industrial applications.
1. Technical Parameters and Equipment Configuration
The 76-127 used pipe welding machine unit is renowned for its high efficiency and flexibility, with core parameters as follows:
Processing range: Capable of producing square pipes (Φ40-100) and round pipes (Φ50-127) with wall thickness up to 5mm, at a production speed of 60m/min.
Key configurations:
Forming and welding: Includes 7 horizontal rolls and 9 vertical rolls forming unit, paired with 300kW solid-state high-frequency welder to ensure stable weld quality.
Auxiliary systems: Hydraulic uncoiler, shear welder, computer flying saw and Turk's head straightening device to enhance automation.
Process flow: Strip uncoiling→leveling→forming→high-frequency welding→cooling→sizing→cutting, ensuring continuous high-efficiency production.
The modular design simplifies maintenance, and after refurbishment, its performance approaches that of new machines while reducing procurement costs by 40%-60%, making it ideal for budget-conscious enterprises.
2. Key Points for Quality Assessment
According to industry standards, the quality of used pipe welding machines should be comprehensively evaluated from four aspects:
Materials and processes
Material durability: Core components such as rolls and high-frequency welders should be original to ensure corrosion resistance and tensile strength.
Process control: Welding quality directly affects joint strength, requiring precise regulation of high-frequency current's skin effect and proximity effect.
Appearance and performance
Visual inspection: The unit surface should be free of rust and deformation, with no significant wear on molds.
Performance test: Verify production speed, sizing accuracy (e.g. ovality ±0.05mm) and flying saw synchronization through trial operation.
After-sales service
Reputable suppliers like Jinyujie Electromechanical provide installation, spare parts support and technical training to reduce operational risks.
3. Market Advantages and Environmental Value
Cost-effectiveness
The 76-127 model typically costs only 50%-60% of new equipment while being ready for immediate use.
A Zhejiang-based enterprise reported 30% productivity improvement with significantly better ROI.
Sustainability
Refurbishing used equipment reduces resource waste, aligning with green manufacturing trends.
Industry adaptability
Widely used in construction (guardrails, scaffolding), automotive (exhaust pipes) and energy (oil pipelines) sectors, supporting various materials including carbon steel and stainless steel.
4. Maintenance and Risk Control
Routine maintenance
Regular lubrication and inspection of key components to prevent rust and damage.
Operation standards
Operators should receive proper training and wear protective equipment.
Procurement risks
Verify equipment sources and clarify responsibilities through formal agreements.
5. Industry Trends and Selection Recommendations
The domestic used pipe welding machine market grew 25% YoY in 2023, with increasing share of refurbished imported equipment. Selection suggestions:
Match production needs with equipment specifications
Choose reputable suppliers with comprehensive after-sales services
Conclusion
The 76-127 used pipe welding machine unit, with its mature technology, low cost and environmental benefits, has become an optimal choice for manufacturers seeking efficiency improvements. Enterprises should combine quality assessment, maintenance strategies and supplier services to maximize equipment value and promote sustainable development.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill
With increasing emphasis on cost control and environmental protection in manufacturing, used pipe welding machines have become a popular choice for SMEs due to their cost-effectiveness and sustainability. This article takes the 76-127 model as an example, providing a comprehensive analysis from multiple dimensions including technical parameters, equipment configuration, quality assessment, market advantages and industrial applications.
1. Technical Parameters and Equipment Configuration
The 76-127 used pipe welding machine unit is renowned for its high efficiency and flexibility, with core parameters as follows:
Processing range: Capable of producing square pipes (Φ40-100) and round pipes (Φ50-127) with wall thickness up to 5mm, at a production speed of 60m/min.
Key configurations:
Forming and welding: Includes 7 horizontal rolls and 9 vertical rolls forming unit, paired with 300kW solid-state high-frequency welder to ensure stable weld quality.
Auxiliary systems: Hydraulic uncoiler, shear welder, computer flying saw and Turk's head straightening device to enhance automation.
Process flow: Strip uncoiling→leveling→forming→high-frequency welding→cooling→sizing→cutting, ensuring continuous high-efficiency production.
The modular design simplifies maintenance, and after refurbishment, its performance approaches that of new machines while reducing procurement costs by 40%-60%, making it ideal for budget-conscious enterprises.
2. Key Points for Quality Assessment
According to industry standards, the quality of used pipe welding machines should be comprehensively evaluated from four aspects:
Materials and processes
Material durability: Core components such as rolls and high-frequency welders should be original to ensure corrosion resistance and tensile strength.
Process control: Welding quality directly affects joint strength, requiring precise regulation of high-frequency current's skin effect and proximity effect.
Appearance and performance
Visual inspection: The unit surface should be free of rust and deformation, with no significant wear on molds.
Performance test: Verify production speed, sizing accuracy (e.g. ovality ±0.05mm) and flying saw synchronization through trial operation.
After-sales service
Reputable suppliers like Jinyujie Electromechanical provide installation, spare parts support and technical training to reduce operational risks.
3. Market Advantages and Environmental Value
Cost-effectiveness
The 76-127 model typically costs only 50%-60% of new equipment while being ready for immediate use.
A Zhejiang-based enterprise reported 30% productivity improvement with significantly better ROI.
Sustainability
Refurbishing used equipment reduces resource waste, aligning with green manufacturing trends.
Industry adaptability
Widely used in construction (guardrails, scaffolding), automotive (exhaust pipes) and energy (oil pipelines) sectors, supporting various materials including carbon steel and stainless steel.
4. Maintenance and Risk Control
Routine maintenance
Regular lubrication and inspection of key components to prevent rust and damage.
Operation standards
Operators should receive proper training and wear protective equipment.
Procurement risks
Verify equipment sources and clarify responsibilities through formal agreements.
5. Industry Trends and Selection Recommendations
The domestic used pipe welding machine market grew 25% YoY in 2023, with increasing share of refurbished imported equipment. Selection suggestions:
Match production needs with equipment specifications
Choose reputable suppliers with comprehensive after-sales services
Conclusion
The 76-127 used pipe welding machine unit, with its mature technology, low cost and environmental benefits, has become an optimal choice for manufacturers seeking efficiency improvements. Enterprises should combine quality assessment, maintenance strategies and supplier services to maximize equipment value and promote sustainable development.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill

Time of issue : 2025-04-23
Recently, Furuiwo launched its highly anticipated used pipe welding machine—the 140 model pipe welding unit. With outstanding processing capabilities and significant cost-performance advantages, this equipment has become an ideal choice for small and medium-sized pipe processing enterprises.
Core Performance: Precision and Efficiency for Diverse Needs
The Furuiwo 140 used pipe welding machine emphasizes practicality and stability, with key technical parameters as follows:
Processing Diameter Range: Φ60-159 mm, covering production needs from light-duty pipes to medium industrial pipelines;
Processing Thickness: Supports materials up to 5 mm, suitable for construction and machinery manufacturing;
Processing Speed: 60 meters/minute, significantly improving efficiency while reducing energy consumption.
The unit adopts a modular design for easy maintenance. After comprehensive inspection and upgrades by Furuiwo’s technical team, its performance is close to new machines, yet procurement costs are substantially lower.
Market Advantages: Economic and Environmental Value
Amid intensifying competition in manufacturing, used pipe welding machines are becoming a strategic choice for cost optimization. The Furuiwo 140 model stands out with the following advantages:
Cost Savings: Priced 40%-60% lower than new machines, ideal for budget-conscious SMEs;
Rapid Deployment: Pre-tested and ready for immediate use, shortening production setup time;
Sustainability: Extends equipment lifecycle, aligning with green manufacturing trends.
Wang Qiang, Furuiwo’s Sales Director, stated: “We are committed to providing high-value solutions. This used pipe welding machine not only ensures reliability but also comes with full after-sales support, including a one-year warranty and lifelong technical assistance.”
Applications: Versatility Across Industries
The unit processes carbon steel, stainless steel, and other materials, serving industries such as:
Construction: Production of guardrails and scaffold pipes;
Automotive: Exhaust pipes and chassis components;
Energy: Customized oil and water pipelines.
A Zhejiang-based pipe manufacturer reported: “After purchasing Furuiwo’s used pipe welding machine, our productivity increased by 30%, with costs halved compared to new equipment—ROI far exceeded expectations.”
Industry Outlook: Growing Demand for Used Equipment
As manufacturing upgrades, the used industrial equipment market is booming. Industry reports indicate a 25% year-on-year growth in China’s used pipe welding machine transactions in 2023, with refurbished imported brands gaining traction. Furuiwo, leveraging technical expertise and channel advantages, has emerged as a leader in this sector.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill
Recently, Furuiwo launched its highly anticipated used pipe welding machine—the 140 model pipe welding unit. With outstanding processing capabilities and significant cost-performance advantages, this equipment has become an ideal choice for small and medium-sized pipe processing enterprises.
Core Performance: Precision and Efficiency for Diverse Needs
The Furuiwo 140 used pipe welding machine emphasizes practicality and stability, with key technical parameters as follows:
Processing Diameter Range: Φ60-159 mm, covering production needs from light-duty pipes to medium industrial pipelines;
Processing Thickness: Supports materials up to 5 mm, suitable for construction and machinery manufacturing;
Processing Speed: 60 meters/minute, significantly improving efficiency while reducing energy consumption.
The unit adopts a modular design for easy maintenance. After comprehensive inspection and upgrades by Furuiwo’s technical team, its performance is close to new machines, yet procurement costs are substantially lower.
Market Advantages: Economic and Environmental Value
Amid intensifying competition in manufacturing, used pipe welding machines are becoming a strategic choice for cost optimization. The Furuiwo 140 model stands out with the following advantages:
Cost Savings: Priced 40%-60% lower than new machines, ideal for budget-conscious SMEs;
Rapid Deployment: Pre-tested and ready for immediate use, shortening production setup time;
Sustainability: Extends equipment lifecycle, aligning with green manufacturing trends.
Wang Qiang, Furuiwo’s Sales Director, stated: “We are committed to providing high-value solutions. This used pipe welding machine not only ensures reliability but also comes with full after-sales support, including a one-year warranty and lifelong technical assistance.”
Applications: Versatility Across Industries
The unit processes carbon steel, stainless steel, and other materials, serving industries such as:
Construction: Production of guardrails and scaffold pipes;
Automotive: Exhaust pipes and chassis components;
Energy: Customized oil and water pipelines.
A Zhejiang-based pipe manufacturer reported: “After purchasing Furuiwo’s used pipe welding machine, our productivity increased by 30%, with costs halved compared to new equipment—ROI far exceeded expectations.”
Industry Outlook: Growing Demand for Used Equipment
As manufacturing upgrades, the used industrial equipment market is booming. Industry reports indicate a 25% year-on-year growth in China’s used pipe welding machine transactions in 2023, with refurbished imported brands gaining traction. Furuiwo, leveraging technical expertise and channel advantages, has emerged as a leader in this sector.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill

Time of issue : 2025-03-21
Answer: Three core advantages:
The processing capacity of this used pipe making machine includes round pipes with diameter of 60-159mm, square and rectangular pipes with diameter of 50 * 50-120 * 120mm, anda wall thickness of 2.0-5.0mm, fully covering the mainstream demand of the welded pipe equipment market.
Refurbishment guarantee for Used ERW tube mill machinery: All mechanical and electrical components undergo professional maintenance/replacement, and the life assessment of key components meets the standards. The renovation and maintenance process for second-hand welded pipe equipment takes at least one month and up to three months.
The cost efficiency of the second-hand high-frequency welded pipe machine is only 45% of that of the new welded pipe machine. The production line of the used welded pipe mills production line sold by our company includes a one-year extended warranty, free training, and lifelong technical support.
Q: After purchasing second-hand welded pipe equipment, how long can it be put into production?
Answer: Jin Yujie Company's second-hand welded pipe equipment is all sourced from first-hand sources, with stock in the warehouse. It takes 7 days to ship and 15 days to complete installation and commissioning. The second-hand welded pipe unit can be purchased and used immediately.
It is recommended to arrange a technical team and decision-makers to conduct on-site inspections of the warehouse as soon as possible, select a second-hand welded pipe unit on site, in order to put it into production as soon as possible, create production capacity for the second-hand welded pipe production line, and achieve profitability.
more datail about this 140 enlarged 165 used tube mill line, please check here:
https://www.usedpipemill.com/product/Forever-Used-High-Frequency-Welding-Pipe-Making-Machie-of-%CE%A6140-Expand-to-%CE%A6165MM-221.html
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill
Answer: Three core advantages:
The processing capacity of this used pipe making machine includes round pipes with diameter of 60-159mm, square and rectangular pipes with diameter of 50 * 50-120 * 120mm, anda wall thickness of 2.0-5.0mm, fully covering the mainstream demand of the welded pipe equipment market.
Refurbishment guarantee for Used ERW tube mill machinery: All mechanical and electrical components undergo professional maintenance/replacement, and the life assessment of key components meets the standards. The renovation and maintenance process for second-hand welded pipe equipment takes at least one month and up to three months.
The cost efficiency of the second-hand high-frequency welded pipe machine is only 45% of that of the new welded pipe machine. The production line of the used welded pipe mills production line sold by our company includes a one-year extended warranty, free training, and lifelong technical support.
Q: After purchasing second-hand welded pipe equipment, how long can it be put into production?
Answer: Jin Yujie Company's second-hand welded pipe equipment is all sourced from first-hand sources, with stock in the warehouse. It takes 7 days to ship and 15 days to complete installation and commissioning. The second-hand welded pipe unit can be purchased and used immediately.
It is recommended to arrange a technical team and decision-makers to conduct on-site inspections of the warehouse as soon as possible, select a second-hand welded pipe unit on site, in order to put it into production as soon as possible, create production capacity for the second-hand welded pipe production line, and achieve profitability.
more datail about this 140 enlarged 165 used tube mill line, please check here:
https://www.usedpipemill.com/product/Forever-Used-High-Frequency-Welding-Pipe-Making-Machie-of-%CE%A6140-Expand-to-%CE%A6165MM-221.html
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill

Time of issue : 2025-03-19
Answer: Three core advantages:
The processing capacity of this used pipe making machine includes round pipes with diameter of 60-159mm, square and rectangular pipes with diameter of 50 * 50-120 * 120mm, anda wall thickness of 2.0-5.0mm, fully covering the mainstream demand of the welded pipe equipment market.
Refurbishment guarantee for Used ERW tube mill machinery: All mechanical and electrical components undergo professional maintenance/replacement, and the life assessment of key components meets the standards. The renovation and maintenance process for second-hand welded pipe equipment takes at least one month and up to three months.
The cost efficiency of the second-hand high-frequency welded pipe machine is only 45% of that of the new welded pipe machine. The production line of the used welded pipe mills production line sold by our company includes a one-year extended warranty, free training, and lifelong technical support.
Q: After purchasing second-hand welded pipe equipment, how long can it be put into production?
Answer: Jin Yujie Company's second-hand welded pipe equipment is all sourced from first-hand sources, with stock in the warehouse. It takes 7 days to ship and 15 days to complete installation and commissioning. The second-hand welded pipe unit can be purchased and used immediately.
It is recommended to arrange a technical team and decision-makers to conduct on-site inspections of the warehouse as soon as possible, select a second-hand welded pipe unit on site, in order to put it into production as soon as possible, create production capacity for the second-hand welded pipe production line, and achieve profitability.
more datail about this 140 enlarged 165 used tube mill line, please check here:
https://www.usedpipemill.com/product/Forever-Used-High-Frequency-Welding-Pipe-Making-Machie-of-%CE%A6140-Expand-to-%CE%A6165MM-221.html
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill
Answer: Three core advantages:
The processing capacity of this used pipe making machine includes round pipes with diameter of 60-159mm, square and rectangular pipes with diameter of 50 * 50-120 * 120mm, anda wall thickness of 2.0-5.0mm, fully covering the mainstream demand of the welded pipe equipment market.
Refurbishment guarantee for Used ERW tube mill machinery: All mechanical and electrical components undergo professional maintenance/replacement, and the life assessment of key components meets the standards. The renovation and maintenance process for second-hand welded pipe equipment takes at least one month and up to three months.
The cost efficiency of the second-hand high-frequency welded pipe machine is only 45% of that of the new welded pipe machine. The production line of the used welded pipe mills production line sold by our company includes a one-year extended warranty, free training, and lifelong technical support.
Q: After purchasing second-hand welded pipe equipment, how long can it be put into production?
Answer: Jin Yujie Company's second-hand welded pipe equipment is all sourced from first-hand sources, with stock in the warehouse. It takes 7 days to ship and 15 days to complete installation and commissioning. The second-hand welded pipe unit can be purchased and used immediately.
It is recommended to arrange a technical team and decision-makers to conduct on-site inspections of the warehouse as soon as possible, select a second-hand welded pipe unit on site, in order to put it into production as soon as possible, create production capacity for the second-hand welded pipe production line, and achieve profitability.
more datail about this 140 enlarged 165 used tube mill line, please check here:
https://www.usedpipemill.com/product/Forever-Used-High-Frequency-Welding-Pipe-Making-Machie-of-%CE%A6140-Expand-to-%CE%A6165MM-221.html
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier(Please click the link→) :second-hand pipe mill
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Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province
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