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Defects caused by improper removal of internal burrs on used welded pipe machine

Defects caused by improper removal of internal burrs on used welded pipe machine

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  • Release time:2023-03-14 11:30
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【概要描述】Whether the burr removal process of the used welded pipe machine is appropriate directly affects the quality of the welded pipe. Sometimes grooves are left due to the scraping of the scraper, which is rejected by the user as a welding defect, which brings serious economic losses to the steel pipe manufacturer.

Defects caused by improper removal of internal burrs on used welded pipe machine

【概要描述】Whether the burr removal process of the used welded pipe machine is appropriate directly affects the quality of the welded pipe. Sometimes grooves are left due to the scraping of the scraper, which is rejected by the user as a welding defect, which brings serious economic losses to the steel pipe manufacturer.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2023-03-14 11:30
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Detail

Whether the burr removal process of the used welded pipe machine is appropriate directly affects the quality of the welded pipe. Sometimes grooves are left due to the scraping of the scraper, which is rejected by the user as a welding defect, which brings serious economic losses to the steel pipe manufacturer.

 

In this case, the inspection agency found a black negative image with a width of about 3mm and perpendicular to the annular seam near some of the girth welds during the ray inspection of the pipeline butt joints during the installation process (Figure 1). Unfusion defects of grooves produced during pipe making. The staff found that there was indeed a groove with the same width as the negative image near the welding seam of the welded pipe (Figure 2), but the groove was not located on the welding seam, so they doubted the inspection party's statement, and combined with the production of the batch of welded pipes. It is proposed that the groove is caused by the deviation of the scraper when removing the burr. This claim was verified by comparing the width of the image with the size of the squeegee.

 

Used welded pipe machine

 

Used welded pipe machine

 

Formation of internal burrs in welding

Under the action of the proximity effect and the skin effect of the high-frequency current, the edges of the formed tube blank are rapidly heated to a molten and semi-molten state, and the partially molten metal is extruded when entering the extrusion roll. Burrs are formed on the inner and outer surfaces. The molten metal entering the inner wall of the welded pipe forms the inner burr of the welded pipe weld; the burr extruded from the outer surface of the welded seam becomes the outer burr. Since the internal burr and removal equipment are in the tube, it is difficult to remove it, which has become one of the major technical problems in the production of used welded pipe machine.

 

Common Problems During Internal Burr Removal

Common problems in the process of internal burr removal mainly include scraping deviation, excessive or small scraping amount, and unclean cleaning. No matter what kind of problem occurs, it will affect the quality of the weld. Under normal circumstances, scraping deviation is the most common phenomenon in used welded pipe machine. Scraping deviation will lead to unclean removal of internal burrs or local thinning of the pipe wall, stress concentration at the edge of the scraper, and in severe cases, it will affect the pressure bearing capacity of the welded pipe.

 

Solution

The internal burr scraping deviation is mainly manifested as intermittent deviation to one side or both sides. The deviation of the inner burr to one side is mainly caused by the deviation of the center position of the tool holder from the weld. The main reason for this problem of the used welded pipe machine is generally that the position of the connecting plate of the tool bar is not suitable. The position of the tool bar can be adjusted through the adjusting bolt of the connecting plate until the scraping phenomenon disappears. In addition, another kind of scraping phenomenon is the intermittent deviation on both sides. In this case, the height of the cutter head is generally too much higher than the support wheel, which can be solved by adjusting the relative height of the cutter head and the support wheel;the cutter bar connecting plate The loosening of the lock nut can also cause intermittent deviation on both sides when the internal burr is scraped, and the nut needs to be re-locked.

 

It can be seen from this case that the scraping phenomenon when removing internal burrs will not only lead to local thinning of the welded pipe wall, but also affect the pressure bearing capacity of the welded pipe in severe cases. The groove left after the scraper passes through locally produces stress concentration and bears hoop stress, which causes fatigue in the process of pipeline decompression and boosting. Even a small operating pressure can cause the pipeline to fail in an instant, resulting in an accident. . At the same time, once the scraper deviates seriously, resulting in the failure of the whole batch, it will increase the production cost of the welded pipe manufacturer.

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Evaluation of 76-127 Used Pipe Welding Machine Unit: Performance, Applications and Market Value Analysis
Evaluation of 76-127 Used Pipe Welding Machine Unit: Performance, Applications and Market Value Analysis
Evaluation of 76-127 Used Pipe Welding Machine Unit: Performance, Applications and Market Value Analysis

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 
Detail
Evaluation of 76-127 Used Pipe Welding Machine Unit: Performance, Applications and Market Value Analysis

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 
Furuiwo Used 140 Pipe Welding Machine Unit
Furuiwo Used 140 Pipe Welding Machine Unit
Furuiwo Used 140 Pipe Welding Machine Unit: Cost-Effective Solution for Efficient Production

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 
Detail
Furuiwo Used 140 Pipe Welding Machine Unit: Cost-Effective Solution for Efficient Production

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 
Small cost replacement of 140 second-hand welded pipe equipment
Small cost replacement of 140 second-hand welded pipe equipment
Q: Why did you choose this refurbished 140 to 165 second-hand welded pipe equipment/used tube 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 
Detail
Q: Why did you choose this refurbished 140 to 165 second-hand welded pipe equipment/used tube 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 
Still worrying about production capacity? 140 refurbished welded pipe production line to relieve worries!
Still worrying about production capacity? 140 refurbished welded pipe production line to relieve worries!
Q: Why did you choose this refurbished 140 to 165 second-hand welded pipe equipment/used tube 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 
Detail
Q: Why did you choose this refurbished 140 to 165 second-hand welded pipe equipment/used tube 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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Email: zty@usedpipemill.com
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