... of the whole cover will be up to 25-60 ton based on size ,complies with requirements of EN124;A15;B125;C250;C400wafery edge ... ,drainage pipe well, heat supplied, gas well4,Round SMC Manhole Cover&Circle BMC manhole covers&resin fiberglass covers&Molded resin covers&molded polymer ... ,available in custom width,safe, embossing option available, SMC composit manhole cover