High-Frequency Tube Mill BSHTM-32 Commissioned in Burkina Faso, Africa

Blue Sky Machine is proud to highlight the successful deployment and continuous operational performance of our High-Frequency Tube Mill, Model BSHTM-32, at a manufacturing facility in Burkina Faso, Africa.

Technical Specifications Overview

Designed for high-output round pipe manufacturing, the BSHTM-32 hf tube mill features robust mechanical and electrical parameters:

Core Performance Highlights in Pipe Manufacturing

Producing high-quality round pipes from thin-gauge steel strip (0.4 mm- 1.5mm) requires precise forming control and stable solid-state high-frequency welding:

1. High-Frequency Solid-State Weld Seam Strength

Powered by a heavy-duty 320KW drive and high-frequency welding unit, the BSHTM-32 ensures full weld penetration along the pipe seam. The heat-affected zone (HAZ) is tightly controlled, delivering smooth, burst-resistant welds ready for immediate structural or decorative use.

2. Stable Precision Forming across 40-Meter Line Length

Spanning 40 meters in overall length, the line’s rigid stand frames and precision-machined forming rolls gradually shape steel strip (70mm - 200mm width) without edge-stretching or surface scoring, maintaining uniform roundness across all production batches.

Expand Your Pipe Manufacturing Capabilities

Looking to establish or upgrade a high-frequency tube mill line in your region? Blue Sky Machine engineers high-output pipe manufacturing equipment tailored to your local grid standards and factory space. Contact the technical specialists at Blue Sky Machine today for a free technical proposal and quotation.

BSSTM-70 Stainless Steel Tube Mill Operating at Customer Facility

Real-world operational footage from our customer's production facility highlights the continuous performance of the Stainless Steel Tube Mill, Model BSSTM-70, engineered and built by Blue Sky Machine.

Designed for precise cold-forming and automated TIG welding of high-grade stainless steel coils, this ss tube mill line reliably processes wide-strip raw material into clean, high-precision industrial and decorative tubes.

Technical Specifications Overview

Engineered for stainless steel pipe manufacturing, the BSSTM-70 features the following core parameters:

Model: SS Pipe Mill- (BSSTM-70)

Pipe Diameter: φ76- 189mm

Raw material thickness: 1.0-3 MM

Raw materlal width:≤700 MM

Total motorpower: 43 KW

Rated PH/VOL/FRE: 3PH/415V/ 50 Hz

Dimension: 32x3x1.8M(LxWXH)

What the BSSTM-70 Accomplishes in Pipe Manufacturing

The BSSTM-70 Stainless Steel Tube Mill integrates forming, welding, sizing, and automated cutting into a single continuous, automated production line:

1. Continuous Precision Roll Forming

Utilizing a 32-meter long sturdy frame, raw stainless steel strip up to 700mm wide passes through a sequence of precision-machined forming rolls. The heavy-duty stand structures prevent strip edge deformation and surface scratching, ensuring consistent roundness prior to the welding zone.

2. High-Integrity Automatic Longitudinal Welding

Equipped with specialized welding torch mounts and stable gas shielding fixtures, the mill delivers a smooth, seam-welded joint along the tube length. The stable 43KW power train ensures uniform weld penetration without burning through thin-wall (1.0mmor under-penetrating thicker (3.0mm) stainless steel.

3. Sizing, Straightening & Automated Cutting

After seam welding and weld bead conditioning, the tube passes through multi-stand sizing and straightening stations to achieve tight outer diameter tolerances and perfect straightness before being cleanly cut to exact customer lengths.


Upgrade Your Stainless Steel Pipe Manufacturing Line

Looking to expand your factory's tube producing capacity? Blue Sky Machine designs and manufactures complete stainless steel pipe mills, high-frequency tube mills and Stainless Steel Pipe Polishing Machine tailored to your target pipe dimensions and plant layout. Contact the engineering team at Blue Sky Machine today for a free technical layout design and factory-direct quotation.

Two Stainless Steel Tube Mills BSSTM-40S & BSSTM-50 Shipped to Raniganj, India

Blue Sky Machine has recently completed the loading and shipment of two stainless steel tube mills, BSSTM-40S and BSSTM-50, for one of our valued customers in Raniganj, West Bengal, India.

The two stainless steel tube mill machines have been successfully loaded onto a vessel and are now on their way to India, marking another milestone in Blue Sky Machine's growing presence in the Indian stainless steel tube manufacturing market.

stainless steel tube mill machine
stainless steel tube mill machine

The BSSTM-40S and BSSTM-50 are designed for the production of high-quality stainless steel tubes and pipes, providing tube manufacturers with reliable forming, welding and sizing capabilities for efficient production.

For stainless steel tube manufacturers, choosing the right tube mill is important for achieving consistent tube dimensions, reliable welding performance and a high-quality surface finish. The equipment configuration can be customized according to the customer's required tube sizes, material specifications and production requirements.

With these two machines now heading to Raniganj, Blue Sky Machine continues to support Indian tube manufacturers with customized stainless steel tube mill solutions.

stainless steel tube mill machine
stainless steel tube mill machine

India has an established steel and tube manufacturing industry, with manufacturers producing stainless steel and other steel tubes for a wide range of industrial applications. Tube mill equipment plays an important role in converting stainless steel strip into accurately formed and welded tubes.

Raniganj, located in West Bengal, is also part of an important industrial region with steel and metal-processing activities. Local industrial companies manufacture a variety of steel products, including pipes and tubes.

For manufacturers looking to expand production capacity or establish a new stainless steel tube production line, selecting a suitable tube mill based on product range and production requirements is essential.

BSSTM-40S & BSSTM-50 Stainless Steel Tube Mills

The shipment of the BSSTM-40S and BSSTM-50 demonstrates Blue Sky Machine's ability to provide different stainless steel tube mill models for customers with different production requirements.

Depending on the required tube specifications, a stainless steel tube mill solution can be configured around factors such as:

This allows the stainless steel tube mill machine to be matched to the customer's actual production needs rather than using a one-size-fits-all configuration.

From China to India: Another Blue Sky Machine Project

From machine design and manufacturing to assembly, testing and shipment, Blue Sky Machine provides complete support throughout the tube mill project.

The successful shipment of the BSSTM-40S and BSSTM-50 to Raniganj is another example of our commitment to serving customers in the international steel tube industry.

As a stainless steel tube mill manufacturer, Blue Sky Machine continues to develop and supply tube mill equipment for customers in India and markets around the world.

If you are planning to establish or upgrade a stainless steel tube production line, our technical team can recommend a suitable tube mill configuration based on your tube size, material, thickness and production requirements.

12-Inch Copy Milling Cold Saw IN ACTION at Customer's Factory

Recently, our service engineers captured fantastic footage of our premium finishing equipment operating on-site, directly from the busy production floor of one of our esteemed global clients.

Running seamlessly alongside a tube mill machine line, the Blue Sky 12-Inch Copy Milling Cold Saw (Model: BS-355) is currently running continuous day shifts, delivering flawless, burr-free cuts at maximum workshop velocity.

The client's workshop required a high-torque, industrial-grade cut-off solution capable of slicing through thick-walled structural tubes without creating massive material heat or loud friction noise. The BS-355 system delivers exactly that, backed by heavy industrial specifications:

With the BS-355 copy milling saw in action, the production line benefits from two major operational upgrades:

  1. Smarter Orbital Cutting Pathway: Instead of dropping straight down through the tube, the 12-inch blade orbits around the profile edge. Powered by a 125KW motor, this orbital motion cuts thick walls smoothly, extends blade longevity, and reduces mechanical strain on the tube mill machine framework.
  2. Perfect Mill-Finish Cuts: Because this is a high-precision cold cutting process, the tube ends remain cool to the touch and perfectly clean. There are zero sharp edge burrs, allowing the client to send the finished tubes directly to the packing yard, saving massive amounts of labor time.

Want to see the full factory floor layout or learn how to integrate a 125KW copy milling saw into your current line? Contact the technical sales team at Guangzhou Blue Sky Machine Co., Ltd today for a free expert consultation!

High Frequency Tube Mill: Shipping Our BSHTM-50 & BSHTM-63 Models to Tanzania

East Africa’s infrastructure and construction sectors are booming. Inside major economic hubs like Dar Es Salaam, Tanzania, the demand for high-quality steel tubes, rectangular hollow sections, and structural pipes has reached an all-time high. Local manufacturers are rapidly shifting from importing finished pipes to producing them domestically to maximize their profit margins.

Recently, we have officially secured and loaded two advanced High Frequency Tube Mills (Models: BSHTM-50 and BSHTM-63) onto ocean vessels, which are now set to sail directly to an esteemed industrial client in Dar Es Salaam.

High frequency tube mill machine ready for shipment to Tanzania
High frequency tube mill machine ready for shipment to Tanzania

Instead of just talking about the shipping logistics, let’s look at the real-world applications of these two powerful machines and how they drive industrial growth.

1. What Can the BSHTM-50 & BSHTM-63 Tube Mills Produce?

The BSHTM-50 and BSHTM-63 are two of our most popular, versatile workhorses. They utilize advanced high-frequency induction welding to transform raw steel strips into premium welded pipes smoothly. Our Tanzania client will utilize this dual-line setup to supply high-demand products across East African markets:

2. Engineered for Maximum Yield and Simple Operation

Running an industrial factory in a developing market requires equipment that balances high speed with simple maintenance. Our high-frequency tube mill platform is built specifically to handle these demanding workshop environments:

  1. Solid, Low-Vibration Forming Rails: The roller stations feature heavy-duty, rigid base frames that ensure the steel strip enters the forming process with zero tracking errors, keeping pipe ovality perfectly circular.
  2. Clean, High-Strength Weld Seams: The high-frequency solid-state welder heats the strip edges instantly without burning the material. This creates a flawless, heavy-duty weld joint that won't crack or leak during downstream bending or hydro-testing.
  3. Automated Flying Saw Cutting: Equipped with a synchronized computer-controlled flying cutting system, the line cleanly chops finished tubes to exact custom lengths without stopping the production loop.
High frequency tube mill machine ready for shipment to Tanzania
High frequency tube mill machine ready for shipment to Tanzania

Partnering with East Africa's Steel Industry

By upgrading to an in-house tube production line, our Tanzanian partner is positioned to significantly reduce import costs, shorten material lead times, and dominate the regional building materials market.

Thank you to our amazing customer in Dar Es Salaam for trusting Guangzhou Blue Sky Machine Co., Ltd as their premier high-frequency tube mill manufacturer. We look forward to seeing these two powerful lines up and running on your factory floor very soon!

Stainless Steel Tube Mill Machine: BSSTM-40 Model Shipped to Casablanca, Morocco

SS Tube Mill Machine: BSSTM-40 Model Shipped to Casablanca, Morocco

Expanding our manufacturing reach to North Africa! Blue Sky Machine Co., Ltd has officially containerized and shipped our premium BSSTM-40 Stainless Steel Tube Mill to a valued client in Casablanca, Morocco.

This high-performance pipe manufacturing system is fully customized to produce high-quality decorative and industrial stainless steel tubes, helping our Moroccan partners scale up their local market production.

1. What Makes the BSSTM-40 Stainless Steel Tube Mill Special?

The BSSTM-40 stainless steel tube mill machine is one of our most reliable and popular models for pipe production. Built for high-speed operation and exceptional accuracy, this line offers several core advantages:

2. Why Choose Blue Sky Machine as Your Tube Mill Manufacturer?

Purchasing an industrial stainless steel tube mill is a long-term investment for any metal processing workshop. Global buyers from India to Morocco choose our machinery because we focus on real-world factory benefits:

  1. High Cutting Accuracy: Our automatic tracking cutting system chops the finished tubes to the exact length you need with zero human error, saving you time and metal scraps.
  2. Heavy-Duty Build Quality: We use premium steel structures and certified gearboxes to ensure the machine can run continuously under high-load shifts without breaking down.
  3. Rust Prevention Packaging: For long ocean journeys to ports like Casablanca, our loading crew applies heavy anti-rust oil and tight plastic wrapping to guard every component against salty sea air.

3. From Guangzhou to Casablanca: Ensuring a Safe Delivery

Shipping heavy-duty industrial machinery across oceans requires professional care. Every part of the BSSTM-40 steel pipe making machine—including the heavy uncoiler, the main forming bases, the welding control box, and the sizing rollers—has been safely braced and chained inside the sea containers.

We want to say a huge thank you to our client in Morocco for choosing Blue Sky Machine Co., Ltd. We can't wait to see this machine running on your factory floor!

April Industry Update: Global Success with Blue Sky Tube Mill Solutions

GUANGZHOU, CHINA – As the 2026 Canton Fair brings the global steel industry to Guangzhou, Blue Sky Machine is proud to share our latest project successes from around the world.

This April, while many are looking for new equipment at the exhibition, our focus remains on our customers' production lines. We are excited to see our machines helping factories grow.

Our Core Solutions for Steel Pipe Production

We specialize in high-performance equipment designed for durability and speed:

Real Results from Customer Sites

Image: Our Stainless Steel Tube Mill recently installed and running smoothly at a customer's facility.

Why do international buyers choose our tube mills?

  1. Stable Performance: Our machines are built to run 24/7 with minimal downtime.
  2. Easy Setup: We provide clear guidance to get your production started quickly.
  3. Perfect Finishing: Especially for stainless steel, our polishing machines ensure a professional look that markets love.

Partner with Blue Sky this Season

If you are visiting Guangzhou this April or searching for a reliable Tube Mill manufacturer online, we are here to help. We don't just sell machines; we provide the complete setup for your success.

Contact us today for a Free Consultation, and let’s plan your next pipe production project together!

Structure Description of Stainless Steel Tube Mill  

Stainless steel tube mill is a special equipment for forming and welding various stainless steel pipes, alloy steel pipes and carbon steel pipes, which is suitable for liquid transportation pipelines in petroleum, chemical, metallurgical and other industries.

Structure of Stainless Steel Tube Mill:

1. Main Forming Machine: It is composed of two parts, the base, and the cross beam; the motor and reducer are mounted on the base, and there is a fixed frame and a movable frame installed on the cross beam by bolts.

2. Fixture: It is composed of three parts: bracket, chuck, and clamping mechanism; the bracket is fixed on the base, and the stands are adjustable; the chuck is installed in the end face of the bracket; the clamping mechanism is mounted on the movable frame.

3. Transmission & Electrical Control Systems: The motor drives the pulley to rotate the spindle and drive the fixture to move longitudinally or laterally to realize the welding process of the workpiece.

4. Hydraulic & Pneumatic Systems: The main function is to keep the workpiece stable during the heating process and guarantee it to meet certain accuracy requirements; At the same time, the flow rate of cooling water can be regulated to adjust the temperature of the workpiece to control the product’s quality.

5.Safety Protection Device: It is mainly composed of overload protection device and safety interlock device.

TUBE INDIA 2022 Exhibition 23th-25th November’2022 @ Mumbai, Maharashtra (INDIA)

We, GUANGZHOU BLUE SKY MACHINE CO LTD will participate in the 9th All Indian Exhibition & Conference for the Tube & Pipe Industries - "TUBE INDIA 2022", which is going to be held from 23rd to 25th November'2022 at Bombay Exhibition Centre (BEC), Goregaon East Mumbai, Maharashtra (INDIA), our Stall No. E-71 in HALL-1.

About TUBE

INDIA:

Tube India 2022 is the oldest & largest exhibition of Tube & Pipe Industry in India and people can experience the entire range of state-of-the-art machinery for tube manufacturing and processing, innovative tube materials and OCTG technology highlights in the exhibition. In India, the building and construction industry and the oil and gas sector are major markets for pipes. Big projects in railways and aviation will also lead to growth in business opportunities.

Industry integrated Manufacturers & Suppliers attend to this high level conference. Innovators and global market leaders gather here with many technical experts and solutions.

We, GUANGZHOU BLUE SKY MACHINE CO LTD offers world-class quality Tube Mill, including Stainless Steel Tube Mill, SS Pipe Polishing Machine, HF Welded Tube Mill, ERW Tube Mill, MS Pipe Making Machine, etc.

Stainless Steel Tube Mill
Stainless Steel Tube Polishing Mill
Tube Mill

We have a well-equipped and professional factory with the latest technology. Apart from Tube Mill, we also offer a wide range of sheet metal equipment and production lines. Cut to length line, Slitting lines, Roll forming machine, supplying both machines and solutions.

Cut to Length Line
Slitting Line
Roll Forming Line
Metal Ceiling Perforation Line

To provide better technical support to all our customers from India and other countries, we have established a after sales service team in CHINA and INDIA. Even under the COVID-19 pandemic situation, Our team still provided the Technical Support at site in customer factory. Successfully done the installation and commissioning in many countries, about 126 nos. Tube Mills, 63 nos. Cut to length lines, 78 nos. Slitting line, 139 nos. Roll forming machines, Our customers are satisfied with our quality and service.

TUBE INDIA 2022 Exhibition – INVITATION

We are looking forward to welcome see you at our Stall No. E-71, Hall No. 1, Bombay Exhibition Centre (BEC), Goregaon East Mumbai, Maharashtra (INDIA) and join us for this mega show.

What Is The Difference Between Food Grade 304 Stainless Steel And Ordinary Stainless Steel

Food grade stainless steel refers to the stainless steel material that meets the requirements of the National Standard of the People's Republic of China / Sanitary Standard for Stainless Steel Food Containers, GB 9684-88, and its lead chromium content is much lower than that of ordinary stainless steel.

Indicator regulations

Food grade stainless steel refers to the part of food machinery that comes into contact with food and must meet certain food safety requirements. Because the food production process uses a lot of acid and alkali, and stainless steel contains chromium, unqualified stainless steel, will dissolve all kinds of chromium, toxic; and it is required to limit the content of various alloy impurity elements such as lead and cadmium.

The difference between food grade stainless steel and 304 stainless steel

When stainless steel products migrate in excess of heavy metals during use, they may endanger human health.

Therefore, the production of stainless steel cookware requires a balance between corrosion protection and safety. If the content of nickel and chromium is high, the anti-corrosion function is enhanced, but the amount of nickel and chromium precipitated will also increase, which means the safety risk is increased.

Because of this, "Stainless Steel Products" (GB9684-2011) national food safety standards, strict regulations on the precipitation of chromium, cadmium, nickel, lead and other heavy metals in the cookware.

Why does the national standard not stipulate the migration limit of manganese?

One reason is that with the increase of manganese content in stainless steel, it is accompanied by the loss of functions such as corrosion resistance and rust resistance of the cookware. Once the manganese content is high to a certain value, the product cannot be used as a cookware or stainless steel cookware. It is. But even such a high manganese content generally does not affect health.

Therefore, although the national food safety standard does not regulate the manganese content, it is clearly stated that the main part of the food container must be made of stainless steel material in accordance with national standards.

Food grade stainless steel is stainless steel according to GB9684 standard

Food grade stainless steel, also known as "GB9864 stainless steel", is the stainless steel material specified in GB 9684-2011 under the National Standard of the People's Republic of China / Sanitary Standard for Stainless Steel Food Containers. The lead content of this stainless steel is lower than that of ordinary stainless steel. Much more, the product's anti-corrosion performance has also increased, the requirements are: lead (in Pb), mg / L 4% acetic acid soaking solution ≤ 1.0 1.0. Chromium (in terms of Cr), mg / L 4% acetic acid soaking solution Medium ≤ 0.5. Nickel (in terms of Ni), mg/L 4% acetic acid soaking solution ≤ 3.01.0. Tin (in terms of Sn), mg/L 4% acetic acid solution ≤ 0.02 0.02. Arsenic (as As), mg/L 4% acetic acid solution ≤ 0.04 0.04. Note: The soaking conditions are all boiled for 30 min, then room temperature for 24 h.

304 stainless steel is a very common stainless steel, also known as 18-8 stainless steel. Its corrosion resistance is better than 430 stainless steel, corrosion resistance, high temperature resistance, good processing performance, so it is widely used in industrial and furniture decoration industry and food medical industry, such as: some high-grade stainless steel tableware, bathroom kitchen utensils.

304 is a versatile stainless steel that is widely used to make equipment and parts that require good overall performance (corrosion resistance and formability).

In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 17% chromium and more than 8% nickel.

Generally 304 stainless steel is not food grade, and the special processed food grade.

It is well known that stainless steel products related to “edible” must use 304, 316 stainless steel. 316 stainless steel is expensive and is used in high-end equipment such as aerospace and food machinery. The food grade stainless steel used in daily necessities is mostly 304 stainless steel, which has good acid and alkali resistance and strong corrosion resistance.

In comparison, 201, 202 stainless steel (commonly known as high manganese steel) is generally used in industrial products, not for tableware, because it:

● The nickel content is not up to standard, the acid and alkali resistance is poor, and it is easy to rust;

● Excessive manganese content, excessive intake of manganese in the human body can cause damage to the nervous system.

201 stainless steel contains less nickel, less chromium, weaker anti-corrosion performance, more manganese, better acid and alkali resistance, and cheaper price! In order to maintain the inherent corrosion resistance of stainless steel, 201 stainless steel must contain more than 16% chromium, more than 8% Nickel content. The surface is very bright with dark light, and the manganese is high and it is easy to rust. 304 contains more chromium, the surface is matte and does not rust. The two are put together and there is comparison. The most important thing is the different corrosion resistance. The corrosion resistance of 201 is very poor, so the price is much cheaper. And because 201 contains low nickel, the price is lower than 304, so the corrosion resistance is not as good as 304.

In daily life, our chances of getting in contact with stainless steel products are extremely high, and stainless steel electric kettles are one of them. Which are "201" and which are "304"? It is difficult to distinguish ~

Differentiating these different stainless steel materials, the laboratory method is mainly to detect the composition of the substance. For example, the hand-held fluorescence spectrometer, which is more commonly used by us, can quickly analyze stainless steel of different materials and quickly obtain the content of all elements in the metal composition. There will be obvious differences.

In general: food grade stainless steel refers to the stainless steel material that meets the national GB9684 standard and can be in contact with food without causing physical harm. GB9864 stainless steel is in accordance with the national GB9684 standard certified stainless steel material, so GB9864 stainless steel is food grade stainless steel. . At the same time, the so-called 304 stainless steel is not required to pass the national GB9684 standard certification, 304 stainless steel is not equal to food grade stainless steel, 304 stainless steel is not only used in kitchen utensils, but also widely used in industry, the hazard to the human body is unknown. At the time of purchase, regular products will be marked with “food grade 304 stainless steel” on the surface and inner wall of the product, and the product labeled “food grade – GB9684” will be safer.