Portable MMA 250 Arc Welding Machine - Quality Welding Suppliers from China Factory

As a leading manufacturer in China, we specialize in the independent development and production of high-quality welding machines. Each machine is meticulously crafted from numerous small components, ensuring top-notch performance and reliability. Our production process begins with the careful procurement of raw materials, including aluminum, copper, electronic components, wires, circuit boards, and transformers. We adhere to strict quality control measures, conducting Incoming Quality Control (IQC) inspections on all raw materials before they proceed to the assembly line. This rigorous assessment guarantees that only the best materials are used in our products. Trust in our factory for superior welding solutions that meet your needs, backed by our commitment to excellence as reliable suppliers in the industry

Product Detail

Product Parameters

Rated Input Voltage	1P 230V ±15%
Actual useable current	120A
Rated Frequency	50/60Hz
No-load voltage(V)	68
Rated duty cycle(40℃)	60%
Input capacity(KVA)	4.7
Perfect usable welding wire/rod	1.6-4.0
Visible cable	1.5m
Holder/Clamp	200A
Machine Meas.	24.5 * 10.5 * 17.5cm
Weight (KG)	3.1KG
Motor Type	DC MOTOR
Protection Degree	IP21S
Type	IGBT 1PCB
Packaging Details	Color box + foam

Product Display

Technological Process

Every procedure in the production process will be tested by our professional inspectors IOC.

Circuit Board Assembly: We assemble the circuit board with various components, including connecting lines, installing potentiometers, transformers, capacitors, and other components. Finally, a complete circuit board assembly is formed. Our professional testers conduct circuit tests to ensure the welding machine has good performance and stability.

Chassis Assembly: After passing the circuit board inspection, the chassis is assembled. The chassis is made of painted iron plates. It requires chassis installation, line connection, overall assembly, and other steps to finally form a complete welding machine equipment.

Current & Voltage Testing: We test the current and voltage. Voltage and current are the core parameters of the welding machine. After production, we carry out real measurement and calibration of voltage and current to ensure that the equipment meets international standards and quality requirements.

FQC Function Testing: The testing and inspection of product functions will be tested by our FQC, such as assembly inspection, non-electric on-off inspection, baking machine, and factory welding process.

OQC Inspection & Storage: Our OQC quality inspector will inspect all products according to the production batch, and the qualified products will be packaged and put into storage.

The production process of electric welding machine has gone through many key steps and requires multi-link quality control and management. Qualified welding machine has good performance and stability. It is a welding equipment widely used in the industrial field and has been recognised and trusted by the majority of users.

Frequently Asked Questions

Q1. What is the rated input voltage and duty cycle of this welding machine?

The welding machine has a rated input voltage of 1P 230V ±15% (50/60Hz) and a rated duty cycle of 60% at 40℃.

Q2. What sizes of welding wires or rods are suitable for this machine?

This equipment is perfectly compatible with welding wires and rods ranging from 1.6mm to 4.0mm in diameter.

Q3. What technology is used in the circuit board and what is its protection rating?

The machine utilizes advanced IGBT 1PCB technology and features an IP21S protection degree to ensure safety and durability.

Q4. How is the quality of the circuit board assembly verified during production?

During production, components like potentiometers, transformers, and capacitors are assembled onto the circuit board. Our professional testers then perform complete circuit tests to ensure optimal stability and performance.

Q5. What final inspection procedures does the product undergo before packaging?

Products undergo strict FQC testing (including assembly, non-electric on-off, baking machine, and factory welding checks) followed by a final OQC inspection by batch before packaging in color boxes with foam.