DRAX manufactures precision hollow block molds for automatic concrete block machines worldwide. Each mold is CNC-machined from high-manganese low carbon alloy steel and carburized heat-treated to 58-65 HRC, delivering 100,000+ production cycles, tight dimensional tolerance, and smooth, sticking-free demolding. We supply hollow block molds from 4 to 12 inches, including: – Standard Hollow Block Mold — 400×200×200 mm (8-inch) – Medium Hollow Block Mold — 400×150×200 mm (6-inch) – Small Hollow Block Mold — 400×100×200 mm / 390×190×190 mm (4-inch) All molds support fully custom cavities, wall thickness, bottom-close/open and pallet layouts, and are compatible with leading block machine brands — Besser, Masa, Hess, Zenith, QGM, and Qunfeng. As a trusted hollow block mold manufacturer in China, DRAX has shipped molds to 50+ countries across Africa, the Middle East, Southeast Asia, and Latin America.