Double up to contain leaks

摘要

TODAY,MANY CHEMICAL COMPANIES ARE addressing numerous environmental and safety issues with a simple,yet elegant approach:double-walled pipe and tubing.Such systems,which feature a pipe within a pipe or encased in an outer covering,with an annulus between the two diameters,have been around for years.However,enhancements in materials,tools and services make double-walled piping faster to install,more reliable long-term and applicable to a broader variety of needs.