SMC Manhole Cover for Gas Station frame cover 500x500mm Standard: EN 124 Loading capability: A15+, A50, ... ,C250 Material:SM frame cover SMC Manhole Cover for Gas Station 500x500mm BS EN124 A15+ , B125, C250, D400 Clear Open 1000mm ... More products : www.triunionie.com SMC Manhole Cover for Gas Station 500x500mm BS EN124 A15 frame cover /composite manhole cover