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The hook type shot blasting machine (also known as a hanger type shot blasting machine) is one of the most versatile surface preparation systems in the foundry and metalworking industry. Its unique design — suspending workpieces on a rotating hook or hanger — allows for 360-degree abrasive blasting coverage without requiring the workpiece to be tumbled or flipped manually. But the key to maximizing your investment in a hook shot blasting machine lies in knowing exactly which workpieces it handles best (and which it does not). In this article, we provide a comprehensive breakdown of the workpiece categories ideally suited for hook type shot blasting machines, based on real-world production experience at Qingdao Puhua Heavy Industrial Machinery Co., Ltd.

Recently, a roller conveyor shot blasting machine from Puhua Heavy Industry successfully completed production debugging and, after passing inspection, was packed and shipped to Southeast Asia. This equipment will be delivered to a local steel structure manufacturing company, primarily for surface cleaning of steel plates and sections, providing reliable pretreatment for steel structure painting.

In steel structure manufacturing, shipbuilding, bridge engineering and heavy machinery industries, the quality of surface treatment directly affects coating adhesion, anti-corrosion performance and product service life. In order to standardize the quality of steel surface cleaning, international standards clearly classify the surface condition after blast cleaning. Common grades include Sa2, Sa2.5 and Sa3.