Product Details
Features:
- The power supply unit's duty are balanced. Three phase power make
MD frequency inverter more adaptable in winding and pressure of
wire.
- More preaser, faster current control, can analyse parameters more
and faster compare with power frequency system.
- Faster to set up current, the speed is 20folds quicker than
traditional technic
- Process more reliable: the majority of the application of solder DC
welding metal effect will be even better.
- Reduce operating costs, including energy savings each and every
point of welding as well as shortening the welding cycle.
- Save energy :especially suitable for welding thick workpieces and
high-conductivity metal .such as aluminum and galvanized steel
sheet.etc.
Item Model | MD-20 | MD-25 | MD-40 | MD-60 | MD-80 | MD-120 |
Maximum short current KA | 20 | 25 | 40 | 60 | 80 | 120 |
Rated duty cycle % | 50 | 50 | 50 | 50 | 50 | 50 |
Secondary voltage V | ≈9.8 | ≈9.8 | ≈11.6 | ≈13.6 | ≈13.6 | ≈13.6 |
Rated power KVA | ≤50 | ≤70 | ≤120 | ≤160 | ≤240 | ≤300 |
Electrode pressure N | 4700 | 4700 | 7300 | 12000/18000 | 12000/18000 | 18000 |
Electrode stroke mm | 80 | 80 | 80 | 100 | 100 | 100 |
Cooling water L/min | 24 | 24 | 30 | 50 | 50 | 60 |
Q Are you a trading company or a factory?
A We are an integrated industry and trade, and have our own factory.
Q Where is your factory located?
A Our factory is located in Songjiang district, Shanghai of China. In
addition, we also have factories in Dongguan and Ningbo.
Q Can you customize the machine?
A We support OEM/ODM service and can customize the machine according
to your requirements.
Q What is the MOQ?
A According to the customer's requirements.
Q What are your services during the purchase process?
A Pre-sales: Visit the factory, Technical solutions and program
design services, Proofing services, Sample testing services.
On-sales: Technical training, Installation and commissioning
services.
After-sales: Free non-wearable parts, Repair service, Video
technical support, Online remote guidance.
Q How long is your warranty period?
A We offer a one-year warranty.
Q What is the payment terms?
A We ship with full payment, and we can negotiate payment terms.
Q How long is the delivery time?
A Delivery time for standard machines: 7-15 working days
Delivery time for customized machines: According to the degree of
customization, about 1-3 months
Q Can you provide samples?
A We provide sampling service, but you need to send us the sample by
courier.
Company Profile

Established in 1995, Trintfar is a high-tech enterprise of
automatic welding equipment integrating scientific research,
development, manufacturing and sales.
As a national high-tech enterprise, after more than 20 years of
unremitting efforts, Trintfar has many cutting-edge welding
technology products, including medium frequency, high frequency
inverter resistance welding machine, numerical control resistance
welding, laser welding equipment, automobile welding production
line, welding robot integrated system, high speed steel drum seam
welding machine, etc. It is not only used in major automobile
manufacturing and parts manufacturing enterprises, but also in
aerospace, home appliance manufacturing, high-speed rail,
low-voltage electrical appliances and other industries. The
innovative team, excellent product design, advanced technology and
reliable quality have made the Trintfar brand a reputation as a
"reliable partner" in the welding equipment market at home and
abroad.
At present, Trintfar has a large number of high-quality talents who
are dedicated, innovative, and united. All staffs adhere to the
"sincere, innovative" business philosophy, has been committed to
providing customers with efficient welding automation solutions.
From consulting to welding equipment operation and maintenance, our
service has been accompanied by our customers.
With high-tech and high-quality services, we will continue to work
hard and innovate. We sincerely and enthusiastically expect to
share with our customers the high efficiency, high quality and work
pleasure brought by our combination of advanced technology and lean
production.