ZHANGJIAGANG ZHONGYUE WELDED PIPE MILL_MODEL ZY50
The EN Standard Steel Pipe Making Machine and Pipe Welding Equipment is designed for manufacturers who need to produce welded steel pipes that meet European market requirements for dimensional accuracy, welding stability, and consistent production quality.
This machine is suitable for producing round pipes, square tubes, rectangular tubes, and structural hollow sections used in construction, furniture, mechanical structures, water systems, and general engineering applications.
The purpose of this page is not only to introduce a pipe welding machine.
It explains what production problems buyers face, why EN standard pipe production requires stricter process control, and how to choose the right pipe making equipment.
Technical and service advantage
Pipe production is an industry which need qualified machine and experienced technology link together to produce the products, that means the machine and experience are both important, our company are only High frequency welded pipe mill manufacture whom use self-machine to produce steel tubes in large quantity, we are improving our machine with running them to get experienced technology. Choose us, you are not only get the machine from us, you are also get he experienced technology from us.
Brief of High frequency welded pipe mill application
High frequency welded pipe mill as known of steel tube manufacturing line, using the high frequency welder and rollers to produce all kinds of steel tube, profile, etc. also widely used in construction tubes, precision tubes, auto tubes, fence, heat exchanger, furniture tube, pressure tube production, with suitable finishing equipment, machine also can capable to produce the API pipe, gas transportation, and high standard tubes and so on.
Market distribution
At the beginning, we are manufacturing and selling the High frequency welded pipe mills at domestic market only, during the opening and development of country policy, also with the improvement of the technology, we are start the export of the machinery since 2006, and now the High frequency welded pipe mill has been export to more than 70 countries, the main market like Asia, North America, South America, Europe, Middle East, Southeast Asia and Africa. We are getting reputed in the world market.
High frequency welded pipe mill production process
According to different customer, the machinery consist by different process, but our company having the standard production process as blew, this is for your reference, suppose your company have special requirement, we could discuss and make your special design.
Uncoiler→ Shear&welding machine→ Accumulator (Cage) →Forming machine→ HF welding→ Sizing machine→ Flying saw (Cold saw) → Run out table
High frequency welded pipe mill specification
Accordingly to the market demands. We are given the standard models as blew, and this is for your reference only, the production range and main technical can be adjustable suppose your company have special requirement.
| High frequency welded pipe mill Specification |
| Mill Model |
OD range (mm) |
Thickness range(mm) |
Line Speed(m/min) |
| ZY-16 |
7.6-16 |
0.3-1.0 |
120 |
| ZY-20 |
10-25.4 |
0.3-1.5 |
120 |
| ZY-32 |
12.7-38.1 |
0.6-1.8 |
120 |
| ZY-45 |
16-50.8 |
0.7-2.0 |
110 |
| ZY-50 |
20-63.5 |
0.8-3.0 |
90 |
| ZY-60 |
25.4-76.2 |
1.0-3.2 |
80 |
| ZY-76 |
31.8-88.9 |
1.2-3.75 |
80 |
| ZY-89 |
33.4-101.6 |
1.2-4.5 |
75 |
| ZY-125 |
50.8-130 |
2.0-5.0 |
60 |
| ZY-165 |
76.2-168 |
2.0-6.0 |
50 |
| ZY-219 |
88.9-219 |
2.0-8.0 |
50 |
| ZY-273 |
89-273 |
3.0-12.0 |
40 |
| ZY-325 |
89-325 |
3.0-12.7 |
40 |
| ZY-406 |
114-406 |
4.0-16.0 |
40 |
| ZY-508 |
219-508 |
4.0-19.1 |
40 |
| ZY-610 |
273-610 |
4.0-19.1 |
40 |
| ZY-660 |
273-660 |
4.0-22 |
40 |
Problem
Many steel pipe manufacturers want to enter or expand in European-standard markets, but they often face several production challenges:
Pipe dimensions are not stable enough.
Weld seam quality is inconsistent.
Wall thickness tolerance is difficult to control.
Pipe straightness does not meet buyer expectations.
Production speed is high, but scrap rate is also high.
For buyers, the key question is not only “Can this machine make steel pipes?”
The more important question is:
Can this steel pipe making machine help produce welded pipes with stable quality, controlled dimensions, and better compliance with EN-related production requirements?
The answer depends on forming accuracy, welding system stability, sizing precision, cutting accuracy, and quality inspection configuration.
Cause
Why EN Standard Pipe Production Is More Demanding
EN-related pipe applications usually require more than basic pipe forming.
For example, EN 10219 covers cold-formed welded structural hollow sections and includes requirements related to technical delivery conditions, tolerances, dimensions, and sectional properties.
EN 10255 is used for non-alloy steel tubes suitable for welding and threading, and it includes requirements for circular tubes, tube ends, coatings, and related delivery conditions.
This means the pipe making machine must support stable production from coil entry to finished pipe output.
Common Causes of Production Failure
Poor roll forming design can cause uneven strip deformation.
This may lead to edge waves, poor roundness, unstable welding gaps, and surface scratches.
If the welding unit is not stable, the pipe seam may have insufficient fusion, burr problems, or inconsistent weld strength.
If the sizing section is not accurate, the final pipe may fail to meet outer diameter, square tube angle, straightness, or length tolerance requirements.
Why Machine Stability Matters
EN-related pipe buyers usually care about repeatable quality.
A machine that only works well during trial production is not enough.
The production line must remain stable during long running hours, frequent size changes, and different material batches.
Conclusion:
The main cause of poor EN pipe production is not one single problem.
It is usually the result of weak forming accuracy, unstable welding, poor sizing control, and insufficient inspection planning.
Solution
Complete Welded Pipe Production Solution
The solution is to use a steel pipe making machine with a rigid forming structure, accurate roll tooling, stable high-frequency welding system, precise sizing section, and reliable cutting equipment.
This pipe welding equipment is designed to help manufacturers improve:
Pipe dimensional consistency.
Weld seam stability.
Surface quality.
Production efficiency.
Specification change accuracy.
Finished pipe acceptance rate.
Forming and Welding Solution
The forming section gradually bends steel strip into the required pipe shape.
This controlled deformation reduces stress concentration and helps maintain better pipe geometry.
The welding section uses high-frequency welding to join the strip edges continuously.
Stable edge forming before welding is critical because poor edge alignment can directly affect weld seam quality.
Sizing and Cutting Solution
After welding and cooling, the pipe enters the sizing section.
The sizing stands correct the final pipe diameter, shape, and straightness.
The cutting system then cuts the pipe to the required length without stopping continuous production.
Flying saw or cold cutting saw can be selected according to pipe material, speed, burr requirement, and end-face quality.
Conclusion:
A qualified EN standard pipe making solution should control the full process, not only the welding point.
Application
Structural Steel Pipe Production
This machine can be used for producing structural hollow sections for building frames, support structures, machinery frames, and engineering components.
EN 10219-related applications often focus on structural hollow sections, including circular, square, and rectangular profiles.
For this application, dimensional accuracy, straightness, and weld seam consistency are important.
Water, Gas, and General Service Pipe
For non-alloy steel tubes suitable for welding and threading, EN 10255-related applications may include general fluid conveyance, construction pipe, and pipe systems requiring tube end or coating options.
The production line should support stable round pipe forming and consistent pipe end quality.
Construction and Infrastructure Pipe
Welded pipes are widely used in scaffolding, support systems, fencing, handrails, and light infrastructure applications.
In these markets, buyers usually care about pipe strength, surface finish, straightness, and batch consistency.
Mechanical and Industrial Tube
The machine can also produce tubes used in machinery, storage systems, agricultural equipment, transportation structures, and industrial frames.
For mechanical use, pipe consistency improves downstream cutting, punching, bending, and welding.
How It Works
Production Flow
A typical EN standard welded pipe production line includes:
Steel coil loading.
Uncoiling.
Strip leveling.
Shearing and butt welding.
Accumulator.
Roll forming.
High-frequency welding.
Weld seam scarfing.
Cooling.
Sizing.
Straightening.
Cutting.
Finished pipe collection.
Optional inspection.
Forming Principle
The steel strip enters multiple forming stands.
Each stand bends the strip step by step until both edges meet at the welding point.
Good roll pass design ensures that the strip edges are aligned before welding.
This is important because even a small forming error can create an unstable welding gap.
Welding Principle
High-frequency welding heats the strip edges rapidly.
The edges are then squeezed together by squeeze rolls to form a continuous weld seam.
After welding, the external burr can be removed by scarfing tools.
This improves surface quality and prepares the pipe for downstream processing.
Sizing Principle
The sizing section corrects pipe diameter, shape, and straightness after welding and cooling.
For square and rectangular tubes, the sizing and shaping section also controls corner radius, side flatness, and profile accuracy.
Conclusion:
The machine works as a complete forming, welding, sizing, and cutting system.
Stable EN pipe production depends on the coordination of every section.
How To Choose
1. Choose According to Target EN Application
First confirm which EN-related application the pipe is intended for.
If the target is structural hollow section production, the machine should focus on forming accuracy, sizing precision, and profile consistency.
If the target is pipe suitable for welding and threading, roundness, pipe end quality, and surface treatment compatibility become more important.
2. Choose According to Pipe Size Range
The buyer should provide round pipe diameter, square tube size, rectangular tube size, and wall thickness.
A wide size range requires stronger forming stands and more roll tooling planning.
A narrow size range may use a more economical machine configuration.
3. Choose According to Material Grade
Different materials require different forming force and welding control.
Carbon steel is common for structural and general pipe production.
Galvanized steel requires better surface protection and careful welding control.
Stainless steel requires more attention to surface finish and roll material.
4. Choose According to Production Capacity
Higher speed can increase output, but only if welding, cooling, sizing, and cutting remain stable.
If the factory focuses on EN-related quality, stable output is more valuable than only pursuing maximum speed.
5. Choose According to Inspection Requirements
For export-oriented pipe production, optional inspection systems may be required.
These may include eddy current testing, online diameter measurement, length control, and weld seam monitoring.
Inspection configuration should match the buyer’s market and customer acceptance requirements.
6. Choose According to Factory Layout
Before ordering the machine, the buyer should confirm workshop length, crane capacity, foundation condition, power supply, water cooling system, and material flow direction.
A correct layout improves efficiency and reduces handling problems.
Company Capability and Trust Information
Zhangjiagang Zhongyue Metallurgy Equipment Technology Co., Ltd provides customized welded pipe production line solutions for different tube applications and market requirements.
Our engineering support can include:
Pipe size and wall thickness analysis.
Material and welding requirement review.
EN-related application discussion.
Machine configuration design.
Roll tooling planning.
Factory layout support.
Installation guidance.
Operator training.
After-sales technical service.
We do not recommend choosing equipment only by pipe diameter.
A reliable pipe making solution should be selected according to pipe standard, material type, production speed, quality inspection needs, and downstream application.
This helps customers reduce production risk before investment.
FAQ
1. What is an EN standard steel pipe making machine?
An EN standard steel pipe making machine is a welded pipe production line configured to support pipe production for European-standard applications.
It usually focuses on stable forming, high-frequency welding, sizing accuracy, pipe straightness, and optional inspection systems.
2. Can this machine produce pipes according to EN 10219?
Yes, the machine can be configured for producing cold-formed welded structural hollow sections used in EN 10219-related applications.
However, final compliance also depends on raw material, production control, inspection, testing, and customer certification requirements.
3. Can this equipment produce EN 10255 type pipes?
The machine can be configured for producing circular welded steel pipes used in EN 10255-related applications.
The buyer should confirm pipe diameter, wall thickness, end finish, coating requirement, and threading or welding application.
4. What affects welded pipe quality most?
The most important factors are steel strip quality, roll design, forming accuracy, welding stability, cooling control, sizing precision, cutting accuracy, and inspection method.
Machine rigidity and operator training also affect long-term production quality.
5. How do I choose the right pipe welding equipment?
You should provide pipe size range, wall thickness, steel grade, target EN standard, production speed, annual output, workshop layout, and inspection requirements.
With these details, engineers can recommend the suitable forming section, welding system, cutting method, automation level, and testing options.
Suggested Supporting Content
Technical Article / How
How to Produce EN Standard Welded Steel Pipe with a High Frequency Pipe Welding Line
This article can explain forming, welding, sizing, scarfing, cooling, and inspection steps.
Industry Analysis / Why
Why EN Standard Pipe Production Requires Better Welding Stability and Dimensional Control
This article can analyze export requirements, customer inspection, scrap cost, and hidden quality risks.
Application Case / Where
EN Standard Structural Pipe Production Line Project Case Study
This case page can show pipe size range, material type, production speed, line configuration, inspection method, and customer application.
Final Conclusion
An EN standard steel pipe making machine should not be presented as a simple product page.
For manufacturers targeting European-standard pipe markets, it is a complete production solution that affects dimensional accuracy, weld seam quality, inspection reliability, and long-term customer acceptance.
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