MarShield is a Canadian manufacturer with exceptional experience in nuclear lead castings and nuclear lead pours. We have proven ourselves to be leaders in the field by helping companies from the first stages of product development right though to a completed, lead filled component. At MarShield we have the facilities to pour molten lead in a continuous pour in excess of 100,000 lbs. This provides a nuclear lead pour consisting of low porosity, high density lead into a customer’s supplied, fabricated weldment. We use only purest lead meeting ASTM B29 standards. We specialize in all types of structural lead pours including nuclear flasks, nuclear storage containers, pipe sleeves and castings.