NAICS 327331 — Concrete Block and Brick Manufacturing 
BEA sector: Concrete pipe, brick, and block manufacturing
Activity: Architectural block, concrete (e.g., fluted, ground face, screen, slump, split), manufacturing
Activity: Blocks, concrete and cinder, manufacturing
Activity: Bricks, concrete, manufacturing
Activity: Cinder (clinker) block, concrete, manufacturing
Activity: Patio block, concrete, manufacturing
Activity: Paving blocks, concrete, manufacturing
Activity: Plinth blocks, precast terrazzo, manufacturing
Activity: Precast concrete block and brick manufacturing
Activity: Prestressed concrete blocks or bricks manufacturing
Activity: Slumped brick manufacturing