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KHGC Closed Head series Orbital Welders

KHGC could process carbon steel, alloy steel, stainless steel and titanium alloy,etc.
KHGC is capable of making welding beam with high seal performance and clean outlook.
KHGC is designed with tiny welding head, very convenient to operate in narrow tube installation site.
Therefore, KHGC orbital welder is widely adopted in the installation of plants such as food& alcohol plant,chemical industry, medicine and other industries.

Features:
- To addresses the issue of operator error in GTAW / TIG . computer-controlled process runs with little intervention from the operator.
- Famous Japanese OTC brand welding source (or other famous brand as customization) rather than Chinese brand.
- Beautiful welding seam with excellent seal performance. TIG welding, no feeding wire and closed welding space by welding head, together makes high seal performance without new impurity, so the weld seam looks beautiful.
- Tiny welding head, very convenient to operate in narrow tube installation site.
- To guarantee high quality repeatable welding. a successful programming monitors variables and performs periodic samples during its test welding. LCD touch screen, easy to input.
- Intelligent welding . 100 groups of welding programs are stored in PLC control system, just pick one.
- Mirco-printer which can print out the welding programs anytime and anywhere.
- High productivity. 2-3 times higher than conventional TIG welding.
- Easy operation. Clamp device to fix the two separated tubes tightly, no need for spot welding, precise positioning.
- 10 hours continuous welding. qualified welding head and power and water cooling system make it.
- Portable, freedom of movement.
- Stable welding. Over 28 years development & improvement based on market
Welding heads:
3.1 Weld heads' specifications (Total 6 models weld heads) |
Model |
KHGC20 |
KHGC34 |
KHGC63 |
KHGC89 |
KHGC114 |
KHGC180 |
Weld speed |
0.6-10 rpm |
0.6-10 |
0.3-5 |
0.1-2.5 |
0.1-2.5 |
0.1-2.5 |
Suitable Dia |
3-20 mm |
10-34 mm |
12-63 mm |
16-89 mm |
20-114 mm |
51-180mm |
Suitable thickness |
Generally 0.7-3mm, Max. 3.5mm, without wire feeding |
Electrode Dia |
1.6 mm |
1.6/2.4 mm |
1.6/2.4 mm |
1.6/2.4 mm |
1.6/2.4 mm |
1.6/2.4 |
Cooling Way |
Air Cooling |
Air Cooling |
Water Cooling |
Water Cooling |
Water Cooling |
Water Cooling |
Weight (without cables) |
1.2kg |
2.1kg |
3.5kg |
4.7kg |
6kg |
9.5kg |

3.2 Features of Weld heads:

- Total 6 models of weld heads, each head suits for different range of pipe sizes.
- Narrow design system suits for narrow working space.
- Water cooling channels running through the entire weld heads body have provided for excellent heat dissipation that enable the weld heads to work continuously even at high welding currents and intensive load.
- The enclosed design and the insert gas management system of the heads ensure a permanent infiltration of the weld seam during welding with insert gas.
- Quick change system for removable clamping shells.
- Stable clamp connections in conjunction with clamping shells available for all tube dimensions guarantee secure clamping and centering of the parts to be welded without misalignment.
- Remote control built into the handle.
- All the important commands for welding can be transmitted to the power supply via a control panel built into the robust and durable aluminum handle, so that no additional remote control is required.
3.3 Clamping shells of heads
- Each set of clamping shells includes 4 pcs. And each size of clamping shells suit for one pipe size.
- Quick removable clamping shells.
3.4 Dimension of Welding Heads(mm)-Total 6 models weld heads |
Model |
KHGC20 |
KHGC34 |
KHGC63 |
KHGC89 |
KHGC114 |
KHGC180 |
A |
62 |
92 |
130 |
156 |
204 |
254 |
B |
35 |
53 |
71.5 |
88 |
110 |
130 |
C |
95 |
135.3 |
174.5 |
218 |
280 |
340 |
D |
265 |
300 |
330 |
384 |
446 |
470 |
E |
20 |
40 |
43 |
43 |
43 |
43 |
F |
12.5 |
24 |
25.5 |
26 |
26 |
26 |
4. Technical Specifications of Welding source:
Welding source Brand |
Famous Japanese OTC brand, EWM or other brands as option |
Rated input Voltage |
380V±10% |
220V±10% |
Phase |
3 phases |
3 phases |
1 phase |
Rated input capacity |
10.6KVA(9.0 KW) |
10.3KVA(7.4KW) |
9KVA(6KW) |
Frequency |
50 / 60 Hz |
Rated welding voltage |
TIG welding, 20V/30V |
Rated voltage no-load |
65V |
57V/62V |
Power control mode |
IGBT Inverter control |
|
Welding current adjust range |
DC 5~315A |
DC 5~300A |
Rated load sustained rate |
60% |
Current rise time |
0.0 ~ 15.0 s |
Weldable wall thickness |
0.8-3mm |
Preheating time |
0.0 ~ 0.1 s |
Current decline time |
0.0 ~ 25.0 s |
Pulse frequency |
0.5 ~ 500 Hz |
Duty ratio adjustment range |
15% ~ 85% |
Cooling type |
Water cooling/ Air cooling |
Weight |
30 kgs |
21 kgs |
Size (L×W×H) |
640×250×430 mm |
560×250×370mm |
Insulation class |
H |
NOTES: the tubes must be standard type, the deviation must be within machine tolerance.
A trained operator is necessary to make sure its normal work.
5. Water cooling system

Water cooling unit for application with inverter Power Source and Control system in conjunction with water-cooled welding tools.
Technical Data:
Input voltage |
220V±10% AC |
Weight |
16.5kg |
Dimensions (L x W x H) |
480 x 280 x 380mm |
Tank capacity |
approx. 9L |
Water column |
35m/5L/min. |
Cooling capacity |
1500W (1L/min.) |
Package includes: |
Water cooling unit;Connection cable Inverter / water cooling unit |
6. Welding Applications


Detailed Photos

Packaging: wooden case
Shipping: By express, by air, by sea, by truck or by rail.

1.Can I purchase products which are not shown on the website?
Yes. Please send us your detailed requirements and we will try to help with your specific needs.
2.How can I place an order?
You can contact us by email (see contact page).
3.Where do you loading the goods?
Shanghai or Ningbo or Qingdao or Shenzhen port, etc.
4.How to make payment?
You can pay us by Paypal, L/C ,T/T and West Union,etc.
5.What is the type of our transportation?
As your requirement, by express, truck, rail, by sea or by air.
6.Can you offer the customers product sample?
Yes .After receiving your inquiry , we will arrange to send the sample within 3 days.
7.How do you pack the goods ?
According to customer's request.
8.What is your payment terms?
FOB Shenzhen, Guangzhou, Qingdao, Shanghai /Ningbo or other city in China , Or CIF Destination.
9.Can you also offer the service with OEM and ODM ?
Yes. We can offer OEM/ODM service. Please send us your brand information and specification.
10.How long is the warranty of your products ?
Generally, it's one-year-warranty. During the warranty period, we offer you free maintenance.
After the warranty time, lower price for customers buying breakdown parts.