FIELD: ferrous metallurgy. SUBSTANCE: walls of blast furnace air heater are made of preliminary moulded and fired bricks. In point of two walls joining there are cast joining members of complex shape. it is possible to make cast joining members locally. It allows to avoid different shape joining bricks pressing operation. EFFECT: method and apparatus allow to make joining members locally and to avoid different shape joining bricks pressing operation. 10 cl, 2 dwg
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