Advanced Induction Heating System for Large Steel Tubes

Product Description

Induction Heat Treatment Furnace Open Air Annealing Equipment

Product Parameters

 

Product Details

Model No.:	HHS-L-400
Colour:	customized
Output Power:	400KW
Working speed:	6 m/min
Length of tubes:	customized
Applicable material	stainless steel, carbon steel, doble phase steel and ect.
Rated input voltage:	3 phase, 380V, 50Hz
Resonace frequency:	10-30KHz (automatic tracking)
Output power adjusted range:	1%-100%

Large diameter API pipe black annealing machine is a special machine for heating the steel pipe to solution temperature and then cool it to room temperature. This machine adopts the advanced induction heating power supply, the new type DSP+IGBT power supply. It uses IGBT inverter, DSP precision control, air-cooling structure( water cooling for induction coil), reduce the loss of system. It has perfect self-protection and self diagnostic function, saves 50% energy comparing with the similar product. It is the first machine that could annealing such large stainless steel welding pipes.

 

Product Description

 

Process Flow of SEKO Black Annealing Heat Treatment Furnace

Concept Drawing

 
What Is Induction Heating?

The power saving principle of electromagnetic induction heating technology is to make the metal heated body heat itself, and according to the specific situation, a certain heat insulation material can be wrapped outside the heating body, which greatly reduces the heat loss and improves the thermal efficiency, so the power saving effect very significant.
 

 The off-line rotary induction heating production line independently developed by SEKO Machinery (Hangao Tech) has been tested and can effectively save energy by up to 50%. The whole production process includes automatic feeding-front and rear tube speed synchronization-induction heating-water cooling-automatic unloading.

The equipment is customized according to the customer's specific order requirements and can handle pipe range from 219 to 1219MM. The pipe is conveyed by rotating wheels, which avoids the collapse and deformation of the large-diameter steel pipe due to the softening of the material after heating, and solves the problem of secondary straightening. This equipment has been applied in many domestic leading pipe manufacturing enterprises like Jiuli Group, Wujin Group and etc., and has been fully proved by the market.
 

Our Advantages

 

√ No preheating required.
√ Start and stop at any time.
√ Max OD up to 1219MM.
√ Efficiency increased by 50%.

√ Min OD could be 219MM.
√ Guarantee pipe straightness.
√ Fast heating speed,surface of the workpiece gets evenly heated , and un-easily oxidized.

√ Integrated control panel, CNC design, easy to operate.
√ Imported IGBT module,more efficient than traditional heating way

 

Function
1. Reduce the hardness of steel pipes, improve the plasticity, to facilitate  cutting machining and cold deformation.

2. Fine grains and homogeneous steel organization and composition, to improve the performance of steel, also to make preparation for the heat treatment.

3. Remove the residual internal stress in steel, to prevent deformation and cracking.


Feature

1. No need pre-heating. Comparing traditional black annealing furnace, it only takes 10 minutes to reach the exact temperature.

2. No need re-straightening. Using rotary tube delivering structure, there is only tiny deformation after heat treatment. 

3. Automatic uploading tubes, with strict docking of front and rear tube's end.

4. Fully automatic running, saving labor cost.
 

Detailed Photos

Liquid Spray Cooling

Wheel Type Automatic Loading + Unloading

Application

SEKO Machinery induction heating equipment black annealing furnace for large diameter steel pipe specializes in industrial usage, like HVAC pipe fittings, sanitary tubes, water pipes, valve pipe fittings, petrochemical pipes, chemical industry, medicine industry, wine-making industry, petroleum industry, food industry, automobile industry, paper making industry, air-condition making industry and so on. Products dealed with our tube mill could reach ASTM, DIN, ISO, GB and JIS standard.
 

Company Profile

 

About SEKO

Guangdong Shunde Seko Machinery Co., Ltd. founded in 2009. We are an industrial stainless steel welded pipe making machine manufacturer, with 20 year experience, which integrates design, research and development, manufacture, sale, after-sale service and other supporting service. By virtue of its excellent credit, high performance products and considerate service, our company has won a large group of loyal customers and is recognized by its peers and the authoritative organizations highly. Its products are exported to Dubai, Russia, India, Thailand, Pakistan, Vietnam and ect..

Packaging & Shipping

 

FAQ

 

FAQ   

1. Which countries your products are exported to?
Our products are sold all over the world and with related certifications.

2.How about the warranty?
All our products have one year quality warranty, during the warranty time, the spare parts replacement is free. And we provide life long time technical support and other assistance.

3.How to install your machine?
Usually speaking, engineers will be sent to your factory to help to install and adjust the machines. We also have paper installation instructions and videos, teaching you till you command it.

4. Which export port you use?
Any China ports. Commonly, we will use Shenzhen port. But it can be appointed as you like.

5. How about the payment terms and delivery time ?
Payment terms for small machines: 100% T/T/ Western Union/Cash in advance.
The big machines and big amount: 40% deposit, 60% before shipment (we will shoot total delivering process for customer's confirmation) and the related papers. You can pay by T/T,L/C, Western Union or other ways.
The machine delivery time is within 45-90 days.

6.Is your goods with ISO9001 or CE certificate ?
Yes, all our goods has ISO certificate. All machines are high quality goods.

7.What is your nature of your company:dealer or factory ?
We are manufacturer with a big factory ,warmly welcome to visit our factory and contact us. 




                                                                                                                                                                                                                       2025-08-28