Heat Exhange Pipe Welding Machine Refrigerator Hot Rolled Coil

ZY-16 Refrigerator pipe, bundy pipe, heat exhange pipe welding machine line

Product Overview

The ZY-16 Heat Exchange Pipe Welding Machine is designed for producing small-diameter straight seam welded tubes used in refrigerator pipe, Bundy pipe, heat exchange pipe, condenser pipe, and precision low-carbon steel tube applications.

This production line is suitable for CR steel and copper-coated CR steel coil. It can produce tubes with an outer diameter range of 7.6 mm to 16 mm and a wall thickness range of 0.3 mm to 1.0 mm.

With a design line speed of 120 m/min, the ZY-16 line is suitable for manufacturers who need stable, continuous, and high-efficiency production of small precision welded tubes.

Unlike ordinary structural pipe mills, this machine focuses on small OD tube forming accuracy, weld seam stability, surface protection, and consistent tube size. These factors are especially important for refrigerator pipe and heat exchange pipe production.

Problem

Manufacturers of refrigerator pipe, Bundy pipe, and heat exchange pipe often face a different challenge from common construction pipe producers.

The tube size is small, the wall thickness is thin, and the final application requires stable welding quality, smooth surface condition, accurate diameter, and good consistency for downstream bending, coiling, cutting, or assembly.

If the machine is not designed for small precision tube production, common problems may appear:

The tube may become oval after forming.

The weld seam may be unstable at high speed.

The copper-coated surface may be damaged during forming.

The pipe may crack during bending or later assembly.

The production speed may look high in theory but become unstable in real factory operation.

The real buyer question is not only “Can this machine make pipe?” The better question is: “Can this line produce small refrigerator and heat exchange tubes continuously, accurately, and with stable weld quality?”

Cause

Small-diameter heat exchange pipe production has high technical requirements.

First, the forming process must control the strip gradually and gently. For OD 7.6 mm to 16 mm tubes, even a small roll gap error can affect tube roundness and weld seam position.

Second, thin-wall material from 0.3 mm to 1.0 mm is sensitive to forming pressure. Excessive pressure may scratch the strip surface or deform the tube. Insufficient pressure may cause poor forming shape and unstable welding.

Third, copper-coated CR steel requires better surface protection. If the roll surface, guiding method, or strip tension is not controlled well, the copper-coated layer may be scratched or damaged.

Fourth, high-speed production at 120 m/min requires strong coordination between uncoiling, accumulation, forming, welding, sizing, and cutting. If any section is unstable, the entire line will lose speed and quality.

The conclusion is clear: refrigerator pipe and heat exchange pipe production requires precision forming technology, stable high-frequency ERW welding, and experienced machine adjustment.

Solution

The ZY-16 Heat Exchange Pipe Welding Machine provides a complete production solution for refrigerator pipe, Bundy pipe, and small heat exchange tube manufacturing.

The line can be configured with uncoiler, shear and end joining, accumulator, forming section, high-frequency ERW welding system, squeeze roll unit, cooling section, sizing section, straightening unit, cutting system, and run-out table.

The machine adopts a “W” forming type. Compared with rough forming methods, W forming helps distribute forming force more reasonably across each stand. This supports better forming shape, more stable strip edge control, and improved tube roundness before welding.

The high-frequency ERW welding system heats the strip edges quickly and locally. The squeeze roll unit then presses the heated edges together to form a straight longitudinal weld seam.

For refrigerator pipe and heat exchange pipe production, stable edge alignment is critical. The forming and welding area must keep the tube seam position consistent, because weld seam instability can affect downstream bending, sealing, and assembly performance.

Zhangjiagang Zhongyue Metallurgy Equipment Technology combines pipe welding machine manufacturing with real tube production experience. The company uses its own pipe welding machines for steel tube production, which helps improve machine design based on actual running feedback.

This means the buyer receives not only the machine, but also practical production experience in forming adjustment, welding control, tooling use, and daily troubleshooting.

Specifications

The following specifications are based on the ZY-16 refrigerator pipe, Bundy pipe, and heat exchange pipe welding machine line.

Application

The ZY-16 line is suitable for small precision welded tube production in refrigeration, heat exchange, and industrial tube fields.

Refrigerator Pipe Production

Refrigerator pipe requires stable small OD size, good weld seam consistency, and reliable surface condition.

The ZY-16 line helps manufacturers produce tubes used in refrigerator systems, cooling circuits, condenser parts, and related home appliance tube applications.

For this application, buyers should focus on surface protection, tube roundness, welding stability, and downstream bending performance.

Bundy Pipe Production

Bundy pipe production requires accurate forming, stable thin-wall welding, and consistent tube size.

Because Bundy pipe is often used in precision fluid or heat transfer applications, the machine must control the forming and welding process carefully.

The ZY-16 machine is suitable for manufacturers who need continuous production of small-diameter welded tubes from CR steel or copper-coated CR steel.

Heat Exchange Pipe Production

Heat exchange pipe needs good dimensional consistency and stable tube quality because it may be used in coils, condensers, radiators, or heat transfer components.

A stable welding seam is important because the pipe may later go through bending, expanding, cutting, or assembly.

The ZY-16 line supports heat exchange pipe producers by improving forming accuracy, welding control, and production continuity.

Precision Small Tube Production

This machine can also be used for small precision tubes in automotive parts, appliance components, furniture fittings, and machinery accessories.

For these applications, buyers should confirm tube size, thickness, material surface, tolerance requirement, and downstream processing method before selecting the machine configuration.

How It Works

The production process starts with CR steel or copper-coated CR steel coil.

The coil is loaded onto the uncoiler and fed into the line. The strip joining section connects coils to support continuous production and reduce downtime.

The accumulator stores strip material before the forming mill. This allows the forming and welding section to continue running while the next coil is prepared.

In the forming section, the flat strip is gradually formed into a small round tube by W forming stands. This forming method helps control tube shape and strip edge position before welding.

In the welding section, high-frequency current heats the strip edges. The squeeze rolls press the heated edges together and create a straight seam weld.

After welding, the tube enters the cooling and sizing section. The sizing stands help control the final tube OD, roundness, and straightness.

The tube is then cut to the required length or transferred to the next downstream process according to the customer’s production requirement.

The key conclusion is simple: stable refrigerator pipe and heat exchange pipe production depends on accurate small-tube forming, controlled ERW welding, surface protection, and continuous line speed.

How To Choose

1. Choose by Tube OD Range

If your target tube OD is between 7.6 mm and 16 mm, the ZY-16 line is suitable for small-diameter refrigerator pipe, Bundy pipe, and heat exchange pipe production.

If your required OD is outside this range, the forming stands, roll tooling, welding configuration, and line model should be redesigned.

2. Choose by Wall Thickness

The ZY-16 line is designed for 0.3 mm to 1.0 mm wall thickness.

Thin-wall tube production requires careful roll pressure control. Buyers should not only check the maximum thickness, but also confirm whether the machine can run stably at the most common production thickness.

3. Choose by Raw Material

This line is suitable for CR steel and copper-coated CR steel.

If the buyer uses copper-coated material, surface protection becomes more important. Roll material, roll polishing, guiding structure, strip tension, and operation method should be considered carefully.

4. Choose by Final Product

Refrigerator pipe, Bundy pipe, and heat exchange pipe have different downstream requirements.

If the tube will be bent, coiled, expanded, or assembled into a sealed system, the buyer should pay special attention to weld seam quality, tube roundness, and material surface condition.

5. Choose by Production Speed

The design line speed is 120 m/min, but actual stable production speed depends on tube size, thickness, material condition, welding power, cutting method, and operator setting.

For long-term factory operation, stable running speed is more important than only the highest theoretical speed.

6. Choose by Factory Layout and Service

Before quotation, the buyer should provide workshop size, coil loading method, power supply, required tube length, downstream process, and target output.

Zhongyue can provide workshop arrangement design before contract confirmation. After contract, the company provides one-year warranty and long-term after-sales support for the machine life cycle.

When the machine has production problems, technical support can be provided through video conference and remote communication to help the customer solve operation issues faster.

FAQ

1. What is the ZY-16 heat exchange pipe welding machine used for?

The ZY-16 machine is used for producing refrigerator pipe, Bundy pipe, heat exchange pipe, condenser pipe, and small precision welded tubes. It is suitable for OD 7.6 mm to 16 mm and thickness 0.3 mm to 1.0 mm.

2. What raw material can this machine process?

The machine is mainly suitable for CR steel and copper-coated CR steel. If the buyer wants to use other materials, the material grade, surface condition, forming difficulty, and welding requirement should be confirmed before machine design.

3. Why is W forming useful for this machine?

W forming helps distribute forming force more reasonably across each forming stand. For small-diameter thin-wall tubes, this can improve tube shape, reduce forming stress, and help keep the strip edge position stable before welding.

4. Can the machine run at 120 m/min?

The design line speed is 120 m/min. Actual production speed depends on tube OD, wall thickness, raw material quality, welding power, cutting method, and operator adjustment. For buyers, stable continuous speed is more important than short-time maximum speed.

5. What information is needed before getting a quotation?

Buyers should provide tube OD range, wall thickness range, raw material type, copper-coated or non-coated surface, required tube length, production speed target, final application, workshop layout, power supply, and downstream process requirement.

Technology Advantage

Pipe production needs both qualified machines and experienced production technology.

Zhongyue is not only a pipe welding machine manufacturer. The company also uses its own machines for steel tube production, which allows engineers to improve machine structure and adjustment methods based on real production experience.

For customers, this is important because buying a pipe welding machine is not only buying equipment. It is also buying forming experience, welding adjustment knowledge, and practical problem-solving support.

This is especially valuable for refrigerator pipe, Bundy pipe, and heat exchange pipe production, where small size, thin wall, surface quality, and weld seam stability directly affect final product quality.

Market Distribution

Zhongyue first manufactured and supplied pipe welding machines for the domestic market.

With the development of technology and international business, the company started exporting machinery in 2006. Today, Zhongyue pipe welding machines have been exported to more than 70 countries.

Main markets include Asia, North America, South America, Europe, the Middle East, Southeast Asia, and Africa.

This international experience helps the company understand different factory layouts, power supply standards, production habits, raw material conditions, and customer application requirements.

Service

Pre-Contract Service

Before contract confirmation, Zhongyue can design the machine proposal according to the customer’s product requirements.

The company can also provide workshop layout arrangement based on the customer’s factory condition, helping the buyer evaluate machine position, material flow, coil loading, pipe collection, and future maintenance space.

After-Contract Service

After contract confirmation, Zhongyue provides equipment manufacturing, installation guidance, commissioning support, and operator training.

The machine comes with a one-year warranty after sale. Long-term after-sales service support is available throughout the machine life cycle.

Production Support

If the customer has trouble during production, Zhongyue can arrange video conference support.

The technical team can help check forming adjustment, welding setting, roll use, speed matching, and common production problems.

tube mill equipment

erw pipe mill

Heat Exhange Pipe Welding Machine Refrigerator Hot Rolled Coil Images