Before talking about DC+ and DC-,First, we need to understand the definition of DC welding machine connections. In China, the Base metal is used as the reference: when the workpiece is connected to the positive terminal, it is called DC positive polarity (DC positive connection); when the Bease meta

The number-letter code tells a welder exactly how the joint is oriented:The Number refers to the welding position (1=Flat, 2=Horizontal, 3=Vertical, 4=Overhead).The Letter "G" stands for Groove Weld.1. 1G (Flat Position) / PAOrientation: The pipe or plate is placed so the weld is on top, and the wel

Notice on Implementation of Traceability QR Codes for Welding Wire ProductsTo strengthen quality assurance and enhance after-sales support, a traceability QR code system will be implemented on all welding wire products manufactured from November 2025 onwards.◈ QR Code ApplicationEach product coil wi

ER70S-6 is the most common and versatile choice for MIG (GMAW) welding of mild steel. But selecting the right diameter is crucial for achieving strong, clean welds and maximizing productivity.Your choice should be a strategic balance of four key factors:1. Material Thickness (The Primary Factor): Ma