Matweld Cast Iron Welding Rods 3.2mm – ideal for cold welding cast iron and joining cast iron to steel. These machinable rods deliver superior penetration with DC welding, making them perfect for repairs and fabrication work on all cast iron types. Built to handle demanding local workshop conditions, they provide reliable, consistent results for both DIY enthusiasts and professionals. Durable, efficient, and designed for hassle-free performance every time.