
Square-Head Soapstone Chalk Used for Positioning and Marking Lines on Steel Plates Before Welding and Cutting. Non-Toxic & Safe: Harmless, no radiation, safe for direct skin contact and children. Durable & Wear Resistant: Higher hardness than chalk, clear lines, long life, marks remain visible after cooling. Customizable Sizes: Available in various sizes including 125*12*5mm and 100*10*10mm. ISO9001 Certified: Manufactured under strict ISO9001 quality management standards. Asbestos Free: Pure talc content with no asbestos, ensuring safety for all users. Wide Application: Ideal for welding, cutting, pipe marking, and machinery manufacturing. Clean Marking: No dust, no dirty hands, leaves clear marks on iron castings. OEM Service Available: Supports minor and full customization, samples, and design-based orders.