Online Welding Steel Tube Black Annealing Machine Induction Heat Treating Furnace


Scope of Application: Industrial Tube/ Sanitary Pipe

Material Applied: 300 Series; Austenite, 400 Series; Ferrite

O.D. Range: 6-762 mm

Thickness: 0.5-20.0 mm

Temperature: 1050-1200

Production Speed: 1-7 M/Min

Power(W): 60-1500 Kw

Heating Type: Induction Heating

After-Sales Service: Engineers Service Machinery Overseas Available

1.Heating power system

2.Induction coil

3.Inductor water spray cooling

4.Infrared temperature measurement

5.Electrical control system

6.Alarm system

Process Flow

Online welding steel tube black annealing euipment induction heat treating furnace specializes in heating steel pipe to black annealing treatment temperature, and then cooling it to indoor temperature by water. Advanced inductor heating power is new type DSP+IGBT structure energy-efficient production. It is 
IGBT inversion and employ DSP do full digital accurate control, full air cooling structure (inductor water cooling) reduces system loss. It has set with  self-protection and self-diagnostic function. It can save about 15% energy than congeneric product.

Material applied: 300series austenite, 400 series ferrite, dual-phase steel
(Note: According to pipe diameter,thickness and production speed to match power. Moreover, the steel pipes need to be pickled after annealing.)


Hangao Tech (SEKO Machinery) duplex steel pipe black annealing machine induction heating oven 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.


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. 




Guangdong Hangao Technology Co., Ltd.

We are always providing our customers with reliable products and considerate services.

If you would like to keep touch with us directly, please go to contact us

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