NEWS

You can get the latest industry information from here.

• Why does Our Annealing Furnace Use DSP＋IGBT Structure

  Why the intermediate frequency induction heating power supply of our annealing furnace is the DSP + IGBT structure

• Factors Affecting Bright Annealing of Stainless Steel Tubes

  Bright annealing is a crucial step for industrial pipe, so what should be done when the operation?

• What is TIG Welding : Working Principle, Applications, Advantages

  Tungsten Inert Gas (TIG) Welding：Combining versatility with high quality and process stability

• How to Use "Gas" in Laser Welding Correctly?

  The invisible and intangible "gas", which cannot be ignored in laser welding, refers to the shielding gas. Its selection directly affects the quality, efficiency and etc.How to Use "Gas" in Laser Weld

• Advantages of Laser Beam Welding

  What are the advantages of laser welding?

• What Are the 10 Common Defects and Solutions of Laser Welding?

  Laser welding is a high-efficiency and precise welding method that uses a high-energy-density laser beam as a heat source. What are the 10 common defects and solutions of laser welding? How to avoid?

• How to Solve the Spatter in Laser Welding?

  The spatter generated by laser welding seriously affects the surface quality of the weld seam, and will pollute and damage the lens. How to solve it?

• Global Industrial Pipe Market Forecast

  The future of the global industrial pipe market forecast, what is the market potential? In what direction?

• Advantages of Automated Welding Tracking Systems

  The reason why pipe making machine is equipped with automatic welding tracking system.

• Hope To Meet You On 13th Indian Stainless Steel Pipe Expo 2023

  With the openning policy, Hangao Tech decides to attend to the Indian Stainless Steel Pipe Expo of 2023. Sincerely hope to meet and service for you at that time.

• Advantages And Applications of Black Annealed Tube

  Introduce some outstanding features of black annealed tube to help you choose the product you want to produce.

• Machining requirements for precision stainless steel pipe fittings

  Hangao tech(SEKO ) precision stainless steel welded pipe making machine (tube mill ) is equipped with uncoiler, Stocker ,The shear welder ,forming &welding machine, weld bead rolling machine,etc

• Why Is the Effect of Laser Welding Unsatisfactory?

  Due to its high efficiency and good welding effect, laser welding machines have gradually become mainstream products in the welding industry. ...

• Causes and Solution of Laser Welding Machine Energy Weakening

  After some manufacturers' laser welding machines have been used for a period of time, the energy will weaken. What is the reason? ...

• Why do industrial stainless steel pipes need annealing?

  Bright annealing machine buying guide, some reasons why you need bright solution equipment.

• Tube Mills and Pipe Mills Selection Guide

  What do you need to pay attention to when choosing pipe making machine？

• Polishing Technology for Stainless steel tube

  Hangao Tech(SEKO Machinery) Stainless steel round pipe outside polishing machine can be used for high quality decorative stainless steel pipe and industrial stainless steel pipe

• The Main Difference between Fine Drawn Pipes and Fine Rolled Pipes

  Cold drawing is to use a cold drawing machine to draw a metal pipe without heating the metal. The advantage is that it does not need to be carried out at high temperature, and the disadvantage is ...

• What is food grade stainless steel?

  Food grade stainless steel is in line with the "People's Republic of China National Standard GB9684"stainless steel material.

• What are the differences between industrial piping and decorative piping?

  What are industrial pipe used for? In what circumstances do we need industrial pipe?

• Listen to the Party and Follow the Party

  In order to enrich the organizational life and establish a close relationship between the party and the masses, on the morning of February 24, 2023, under ...

• Seize The Chance To Get High Quality Development

  The "2022 Guangdong Stainless Steel Industry Annual Conference" was held on February 16, 2023.

• Hangao Tech 2023 Chinese Spring Festival Holiday Noticement

  This is notice for Hangao Tech (SEKO Machinery) working schedule of new year in the coming.

• 2023 New Year Holiday Noticement of Hangao Tech

  Hangao Tech, SEKO Machinery, stainless steep pipe making machine, pipe polishing machine

• Common Problems and Solutions of Welded Pipe Internal Leveling Equipment

  When making stainless steel sanitary fluid pipes, internal weld treatment is an essential process. You will need an internal weld leveling machine. In manufacturing activities, daily equipment ...

• Causes and Preventive Measures of Stainless Steel Welded Pipe Defects (2)

  In last articles, we have discussed parts of causes and preventive measures of stainless steel welded pipe defects. Today, we keep overviewing the rest of them. ...

• Causes and Preventive Measures of Stainless Steel Welded Pipe Defects (1)

  There will be some defects in the welding process of stainless steel welded pipes. The defects of stainless steel welded pipes will lead to stress concentration, reduce bearing capacity, shorten ...

• Classification and Process Distinction of Titanium Alloy Tubes

  some aspects about titanium pipe which is usually extruded called seamless titanium pipe.

• The National Days Vacation Noticement of Hangao Tech (SEKO Machinery)

  The China National Days will be coming soon. Hangao Tech (SEKO Machinery) will leave office from 1st-5th,Oct, and come back to work on 6th.Oct. ...

• Summary of Heat Treatment Process of Titanium Tube

  The common heat treatment methods of titanium tubes are annealing, heat treatment and tempering. Annealing is to better remove thermal stress, improve ...

• Which Is Better between Austenitic Stainless Steel And 304 Steel? (2)

  There are many types of austenitic stainless steel, 304 stainless steel is actually a kind of austenitic stainless steel. So ...

• Which Is Better Between Austenitic Stainless Steel And 304 Steel ? (1)

  There are many types of austenitic stainless steel, 304 stainless steel is actually a kind of austenitic stainless steel. ...

• Hangao Tech (SEKO Machinery) Vacation Noticement of Mid-autumn Festival 2022

  For the Mid-Autumn Festival in 2022, Hangao Tech (SEKO Machinery) will have a holiday on September 10-11. At that time, if ...

• Bright (BA grade) Stainless Steel Tube Annealing Principle and Requirements

  Bright annealing (BA) means that the stainless steel material is heated in a closed furnace in a reducing atmosphere of inert gas ...

• What Is the Difference between 304 Stainless Steel and Austenitic Stainless Steel?

  What Is the Difference between 304 Stainless Steel and Austenitic Stainless Steel? There are 3 differences between 304 stainless steel and austenitic stainless steel:

• What Are the Factors Affecting the Bright Annealing Heat Treatment of Stainless Steel Welded Pipes?

  The purpose of on-line bright heat treatment of stainless steel welded pipes: one is to eliminate the residual stress generated ...

• Analysis of Production Process and Product Characteristics of Titanium Welded Pipe

  At present, there are only a handful of large titanium welded pipe companies in the world. One of the main factors restricting the development of titanium welded pipes is the insufficient ...

• Differences Between Seamless Titanium Alloy Pipes And Welded Titanium Alloy Pipes

  Titanium tubes are generally divided into two types of pipes, here are the differences between them. Extruded titanium tubes include cold-rolled tubes, ...

• What Is The Suitable Welding Processes For Sanitary Stainless Steel Pipes ?

  Generally, sanitary and stainless steel pipe welding process, using argon arc welding method

• Inauguration Ceremony of Hangao-Tech Foshan Marketing Center

  At 8:28 a.m. on July 9, 2022, the inauguration ceremony of the marketing center of Guangdong Hangao-Tech (SEKO Machinery) Co., Ltd. was officially held.

• SEKO Party Branch Celebrates The Theme of HongKong's Return To The Motherland

  SEKO branch members participated in the 101st anniversary of the communist party of China and the 25th anniversary of the return of Hong Kong (China)

• Congratulations to Mr. Lv Haihui for Winning the Title of "Stainless Craftsman"

  On the afternoon of June 15th, the Guangdong Stainless Steel Materials and Products Association held the 2021 "Stainless Craftsman" publicity ...

• 2022 Hangao Tech (SEKO Machinery) Starts New Journey

  Hangao Tech, SEKO Machinery, Online intelligent bright annealing furnace, high-speed precision stainless steel industrial tube production line

• Forging Ahead! Brand New Hangao with Vitality

  In order to better respond to the country's call for "Made in China 2025" and promote the transformation and upgrading of enterprises ...

• Common Welding Pipe Weld Seam Inspection Methods

  The methods of welding tests of non-destructive in pipe producution lines are as follows.

• Hangao Tech (SEKO Machienry) New Factory Opening Ceremony

  Hangao Technology Co., Ltd. is a high-tech and specialized new enterprise. ...

• Hangao Tech (SEKO Machinery) Holiday Noticement of Dragon Boat Festival

  Chinese traditional festival - Dragon Boat Festival is approaching. Hangao Tech (SEKO Machinery) will ...

• Hangao Tech (SEKO Machinery) Conducts Voluntary Service Activities in Nucleic Acid Testing

  In the early morning of May 17, Leliu Street launched the second round of large-scale nucleic acid testing. At ...

• Nucleic Acid Detection Hangao Tech (SEKO Machinery) Is Taking Action

  In April, the new crown virus epidemic had the momentum of a comeback. Hangao Tech (SEKO Machinery) responded ...

• Why Do We Choose Servo Motor Driving Weld Bead Rolling Machine?

  Welding seam leveling machine with servo motor driving is more energy saving with higher efficiency.

• Is Stainless Steel 304 Industrial Welded Pipe Suitable for Laser Welding?

  304 steel is a general-purpose stainless steel that is widely used to make equipment and parts that require good overall properties ..

• Hangao Tech attended to "Good Living, Realizes Dreams" Activity and Sent Warmth

  Hangao Tech (SEKO Machinery), as a local company in Shunde, is rooted here and deeply cultivated here. In response to the call of the Leliu Sub-district Office ...

• Protecting The Environment Starts by Garbage Classification

  Stainles steel tube mill line manufacturer HanGao company attended this activity of garbage classfication.

• How Many Types Are the Welding Residual Stress?

  Welding machine process in residual are generally classified in to thermal stress and restraint stress and so on.

• Austenitic Stainless Steel’s Bright Annealing Heat Treatment

  Austenitic stainless steel cannot be strengthened by heat treatment, but it can be strengthened by cold working deformation ...

• Precautions for Heat Treatment of Austenitic Stainless Steel Pipes

  Austenitic stainless steel, as the name implies, its structure is austenite, and the heat treatment of austenitic stainless steel is very important, because ...

• How does Induction Heating Bright Annealing Furnace Work?

  The principle of induction heating heat treatment is to put the workpiece into the inductor (coil). When an alternating current of a certain frequency ...

• Difference Between Stainless Steel Precision Tube And Ordinary Tube

  In the context of rapid economic development, the demand for stainless steel pipes is increasing. With the development of science ...

• What Is the Internet of Things Technology?

  The Internet of Things technology is: through radio frequency identification (RFID), infrared sensors, global positioning systems, laser scanners ...

• Working Principle of Argon Arc Welding Machine

  What is argon arc welding? Argon arc welding is tungsten inert gas shielded arc welding. It refers to a welding method ...

• What Is Sanitary Stainless Steel Pipe?

  Sanitary grade (food grade) stainless steel pipes are widely used in many fields and industries such as pharmaceuticals, video, beer, drinking water, biological engineering, ...

• What Is 2205 Stainless Steel Tube Annealing? What Is the Annealing Process?

  Annealing is a heat treatment process for stainless steel welded pipes. Its purpose is to eliminate residual stress, stabilize dimensions, and reduce the tendency of deformation and cracking ...

• What Are the Methods for Reducing Magnetic Deflection During Welding in Welded Pipe Production Lines?

  The magnetic bias blowing during arc welding is due to the uneven distribution of magnetic field lines around the arc, which causes the arc to deviate from ...

• Precautions When Using Welding Machine

  For general welding machines, especially arc welding machines, you should know some general knowledge before using them ...

• Various "Problems" and "Prescriptions" in the Process of Stainless Steel Pipe Welding (2)

  Next, Hangao Tehc (SEKO Machinery) will continue to take you to understand the problems that may occur during the welding process and help you prevent and solve such problems ...

• Brief Introduction of Stainless Steel Classification and Welding Characteristics

  Stainless steel can be divided into four categories according to its steel structure, namely, austenitic stainless steel, ferritic stainless steel, martensitic stainless steel ...

• Various "Problems" and "Prescriptions" in the Process of Stainless Steel Pipes Welding (1)

  The welding characteristics of austenitic stainless steel: the elastic and plastic stress and strain during the welding process are very large, but ...

• What Are The Efficient Welding Methods for Titanium Alloy Welding ?

  When we carry on the titantium alloy welding process, here some notices we should learn.

• What The Welding Performance And Influencing Factors of Metal Materials ? (1)

  Choosing correct welding materials is an important factor to ensure high-quality welded joints.

• What The Welding Performance And Influencing Factors of Metal Materials ? (2)

  Choosing correct welding materials is an important factor to ensure high-quality welded joints.

• Identification and Evaluation Indexes for Weldability of Metallic Materials

  How to identify and evaluate the indexes of the matal materials welding procrss ?

• To Improve Stainless Steel Pipe's Corrosion Resistance, What Should Be Noticed When Welding?

  what we we should keep in mind when we welding for its better piple corrosion resistance？

• 6 Main Factors Affecting Laser Deep Penetration Welding

  In this article, we'll talk about some factors playing actions in laser welding pipe production line's deep penetration process.

• Brief Description of Welding Heat Affected Zone

  Hangao Tech (SEKO Machinery), which has 20 years of experience in the development and production of stainless steel industrial welded pipe production line equipment ...

• Laser Welding, Do You Know All About the "Gas"?

  Have you encountered any welding defects such as large splashes during welding, unsightly weld formation, and a large number of pores after welding? ...

• About the Injecting Method of Protective Atmosphere When Doing Laser Welding

  There are currently two main ways to blow in the shielding gas: one is to blow the shielding gas on the side ...

• Why do Stainless Steel Longitudinal Welded Pipes Need to Be Internally Leveled?

  At present, the petroleum, chemical, nuclear power, boiler, food, pharmaceutical and other industries mainly use stainless steel seamless pipes. ...

• Why does Laser Welding Cause Black Solder Joints?

  Fiber laser welding machine has the advantages of small welding seam, high strength and easy automation. Since its launch on the market, it has been well ...

• Why should stainless steel be leveled?

  Industrial welded pipe on the molding process to add more leveling in this process, many customers do not know why need this process

• Detailed Description of the Laser Welding Method of Stainless Steel Pipe Welding

  Generally speaking, people think that the laser welding process is faster than GTAW, they have the same rejection rate, and the former brings better metallographic ...

• Pros And Cons of All The Different Seam Tracking Solutions (1)

  Understanding weld tracking technology means understanding all possible smart solutions. Depending on your welding process, materials ...

• Pros And Cons of All The Different Seam Tracking Solutions (2)

  Understanding weld tracking technology means understanding all possible smart solutions.

• Tips for Welding Thin Stainless Steel Pipe by Argon Arc Welding

  What we should notice when welding stainless steel pipe ?

• What Is The Welding Seam Flaw Detection And Working Principle ?

  Weld flaw detection is to detect cracks or defects in metal materials or components in the welding machine process.

• To Have A Look the Industrial Production in the Era of the IOT, via 8 Major Industrial Big Data Application Scenarios! (2)

  Big data is a good sales analysis tool. Through the multi-dimensional combination of historical data, we can ...

• To Have A Look the Industrial Production in the Era of the IOT, via 8 Major Industrial Big Data Application Scenarios! (1)

  Industrial big data is a new concept, literally understood, industrial big data refers to the big data generated in ...

• On-line Eddy Current Flaw Detection of Welded Stainless Steel Pipes

  With the rapid development of science and technology and industrial production, companies have higher and higher ...

• Bright (BA grade) Stainless Steel Tube Annealing Principle And Requirements

  The bright annealed stainless steel tube can be widely used in heat exchangers, boilers, condensers, coolers, and heaters. ...

• Surface Treatment And Polishing Process of Stainless Steel Welded Pipe

  The surface polishing process of stainless steel welded pipes commonly includes stainless steel anodizing, stainless steel galvanizing, stainless steel ...

• Stainless Steel Tube Bright Annealing Process Description (2)

  In the stainless steel welded pipe industry, to make high-quality products, ASTM A249 in the United States clearly ...

• How to Deal with the Black Surface of Stainless Steel Pipes?

  Stainless steel polished pipe has good corrosion resistance, heat resistance, low temperature strength and ...

• What Should Be Paid Attention When Producting Stainless Steel Welded Pipe?

  The production of stainless steel welded pipes has to go through the processes of uncoiling, feeding, forming, welding, weld grinding, etc. ...

• News about Convention of Hangao Tech (SEKO Machinery) Party Branch

  Today, Hangao Tech hold the first convention of members and finished it successfully, with the leading of our party branch ...

• Public Holiday Notice of Hangao Tech (SEKO Machinery)

  The National Day is coming soon. We will leave office from 1st-4th, Oct., and come back on 5th,Oct.. If you ...

• Reasons And Solutions For Protective Gas Stainless Steel Welded Pipe Bright Annealing Furnace

  With the increasing demand for stainless steel pipes in domestic and foreign markets, customers

• Stainless Steel Tube Bright Annealing Process Description（1）

  The bright annealing equipment is a special equipment for heating stainless steel pipes to 1050 degrees Celsius on-line.

• Some Knowledge of Stainless Steel Welded Pipe Making Machine's Roller Sets

  Welded pipe molds are used to produce stainless steel profiles and are also used to produce high frequency welded pipes. The quality of the mold determines ...

• What Kinds of Cracks do Stainless Steel Welded Pipes Have When Welding?

  Stainless steel welded pipes may have many problems during the welding process, such as undercuts, pores ,,,

• Factors affecting the yield of stainless steel welded pipe and improvement measures

  Stainless steel welded tubes are used in a wide range of applications and manufacturers. Therefore, only high-end, high-quality industrial welded pipes have a competitive advantage. ...

• Why Stainless Steel Pipe Fittings Need Bright Annealing Heat Treatment?

  The thin-walled stainless steel pipe fittings are made of 304 (06Cr19Ni10) austenitic stainless steel. After forming, they are welded into a blank pipe, and then reduced and ...

• Can Stainless Steel Welded Tubes Be Used as Heat Exchanger Tubes?

  In the past five years, the development trend of stainless steel welded pipe has been relatively good. Regardless of scale, quality, and production technology, there ...

• Why Can SS Heat Exchange Tubes Replace SST Composite Heat Exchange Tubes?

  Stainless steel heat exchange tubes, single metal pipes and ordinary bimetallic composite pipes are difficult to meet the requirements of the boiler and heat ...

• What Is Sanitary Grade Stainless Steel Pipe Fittings?

  Sanitary pipe fittings refer to sanitary fittings used in places in the pharmaceutical, food, and other industries that require high levels of hygiene. The general ...

• The Pickling Passivation Process of Stainless Steel Welded Pipe

  The pickling process of stainless steel welded pipe is to remove the pipe welding and other stains to make the surface texture better, form a good.

• Why does the Stainless Steel Tube Turn Yellow or Black after Bright Annealing?

  At present, the application of stainless steel pipes in the market is very extensive, and it has a very important role in many industries. In order to ...

• What Are The Precautions For Decorative Stainless Steel Tubes When Cooling?

  Regarding the cooling of decorative stainless steel pipes in the production process, the technical requirements applied here are very high.

• Precautions for Stainless Steel Processing

  How to solve the problems in stainless steel production and processing engineering? Many manufacturers or consumers ...

• About Small Diameter Heat Exchanger Stainless Steel Welded Pipe

  Small-diameter stainless steel welded pipes have developed rapidly in recent years, bringing economic benefits to manufacturers ...

• What Are the Factors that Affect the Accuracy of Stainless Steel Welded Pipe's Outer Diameter?

  Stainless steel welded pipe refers to a steel pipe with strict internal and external dimensional accuracy (tolerance range), good internal and ...

• What Is the Difference between Ordinary Stainless Steel Tubes And Stainless Steel Precision Tubes?

  The stainless steel precision tube has a high-precision diameter and thickness, and the tolerance control range is relatively ...

• How Should Stainless Steel Heat Exchange Tubes Be Heat Treated?

  The heat exchange tube is the heat exchange element of the heat exchanger. The quality and performance characteristics of the heat exchange tube will affect the heat exchange work and ...

• What Are the Advantages of Stainless Steel Eelded Pipe?

  Stainless steel welded pipe, referred to as welded pipe, is a steel pipe made by welding commonly used steel or steel strip after crimping through a unit ...

• Hidden Dangers of Large Weld Reinforcement of the Stainless Steel Industrial Welded Pipe

  Following the rapid development trend of high-quality strip continuous rolling production and the development of electric welding and testing technology, the continuous...

• Why Does Austenitic Welded Pipe Have Hot Cracks And Deformation?

  The welding characteristics of austenitic stainless steel: The elastic and plastic stress and strain during the welding process are very large, but ...

• Austenitic Stainless Steel Welding Method And Welding Material Selection

  Austenitic stainless steel can be welded by argon tungsten arc welding (TIG), molten argon arc welding (MIG), plasma argon arc welding (PAW) and ...

• How To Solve Problem of Yellowing or Blackening of Stainless Steel Tubes After Bright Annealing?

  At present, the application of stainless steel pipe in the market is very extensive, and it has a very important role in ...

• Production and Application of Sanitary (Food Grade) Stainless Steel Pipe

  Production and Application of Sanitary (Food Grade) Stainless Steel Pipe

• What Is the Prospect of Stainless Steel Water Pipes?

  Water is the source of life. People can live for 7 days without food, but can only live for 5 days without water, so water is the root of all things growth and survival. The history ...

• Why do We Need to Use Welding Protective Gas When Welding?

  As a pioneering company in the stainless steel industrial welded pipe production equipment industry, Hangao Tech draws conclusions from the user experience. Today, ...

• Why is TIG Welding Technology Recommended for Stainless Steel Industrial Pipes?

  Why is TIG Welding Technology Recommended for Stainless Steel Industrial Pipes?

• Steel Pipe Production Line

• How automatic Pipe Welding Machines Can Benefit Your Business

• Pipe Making Machine Reviews - How to Find a Pipe Maker at a Competitive Price

• Choose the Best Tube Mill Manufacturer

• Hangao Tech Devoted into the Voluteer Activity of Foshan National Nucleic Acid Testing

  Hangao Tech Devoted into the Voluteer Activity of Foshan National Nucleic Acid Testing

• Pipe Making Machine - Essential Equipment in Various fields

• How to Choose a Tube Mill Manufacturer

• Using Tube Mill Machine To Create Strong Tubes

• 5 Pipe Making Machine Challenges

• What are the three essential kinds of pipe making machine?

• Making the Cut: Pick the Right Cutting Machine for Pipe

• How to Use a Polishing Machine

• All about Tube Mill Machine

• Intelligent Bright Solid Solution Equipment for Your Business

  Intelligent bright solid solution equipment is equipment that is made to be used in a more efficient and productive manner.

• Know More About Electromagnetic Control System

  Electromagnetic control systems are essential to the construction of modern industry.

• News! Brand SEKO Upgrades to HANGO Tech Officially

  To offer service and promote our brand better, SEKO Machinery decides to upgrade as Hangao Tech in 2021.

• Is Stainless Steel Pipe Welding Machine Expensive?

  What is the quotation for stainless steel pipe welding machine? Ideal is very plump, the reality is very skinny.

• Do You Understand the Production Process of Stainless Steel Pipe Making Machine?

  The production process of stainless steel pipe making machine equipment.

• What Effect Does the Electromagnetic Control System Have on the Pipe Welding Machine?

  Recently, a lot of customers come to inspect and ask about the electromagnetic control system is the same thing?

• Laser Welding Will Become the Next Laser Industry Development Focus！

  In recent years, as a kind of high quality, high precision, low deformation, high efficiency and high speed welding equipment.

• Notes for Use of Stainless Steel Pipe Welding Machine

  Stainless steel welded pipe equipment in the use of a lot of matters to pay attention to.

• Multifunctional welding machine introduction!

  Digital welders are generally digital welders. Digital welders are controlled by DSP.