... Small/OEM orders are welcome Refrireation and Plumbing Insulated Copper Tube Specifications:1) Classification: PE coated ... Copper pipeline:1) Healthy and non-toxic, bacteriological neutral, conforming to drinking waterstandards2) Resistant to high temperatures ... For subterranean natural gas, coal gas and oxygen Pictures of Product Pictures of CompanyPictures of Certification Insulated Copper Tube, For ...