However, lead is ranked number two on the U.S. Government's Top 100 Hazardous Substances Priority List. The U.S. Environmental Protection Agency has listed lead as a toxic chemical and set very restrictive threshold limits for concentrations in air, soil, water and vegetation. Lead is also under strict limitations in unleaded gasoline, paint, and general exposure in workplaces. According to this List, lead poses the second "most significant potential threat to human health", due to its toxicity and potential for exposure.
As lead is toxic, diving tungsten weight is a suitable for diving lead weight replacement. It has an even higher density than lead. However, due to its extremely high melting temperature, molding tungsten into a shape is complex and costly. Still, tungsten diving weight can be formed into solids through a process called sintering. This is where tungsten and other metal powders are pressed into shape and bound in a special furnace. And the diving tungsten weight is harder than the lead diving weight, so it would have a longer service life than the lead weight.
Diving tungsten weight is become more and more popular among the divers, and it’s high density and would be made small than the lead weight which is easy to wear and it’s helpful for the diver to diving more deeply.If you have any interest in diving tungsten weight, please feel free to email us: sales@chinatungsten.com sales@xiamentungsten.com or call us by: 0086 592 512 9696, 0086 592 512 9595. We are at your service.