History and Global Adoption
Copper pipes have a long history of use as water supply pipes and are proven to be durable with a long life. In developed countries, copper water pipe systems account for a large proportion of installations. The application technology of copper water pipes is mature internationally, with complete standards for copper pipes and fittings and various interface methods.
Material and Mechanical Properties
Copper water pipes are made of TP2 copper with a purity of 99.9 percent and are seamless pipes drawn by cold extrusion. The pipes combine the advantages of metal pipes and non-metallic pipes. They are hard and strong, with a tensile strength above 205 MPa in the annealed condition and higher in hard tempers, stable chemical properties, good resistance to corrosion, good mechanical properties, and good ductility. This ductility solves the non-standard turning problems of arc loops in gymnasiums, hotels, and hospitals.
Antibacterial Properties
Copper has super antibacterial properties and can kill a variety of bacteria including Candida albicans, Escherichia coli, and Legionella. Copper ions, as charged particles, prevent cell respiration, puncture bacterial cell membranes, destroy virus shells, and damage internal DNA and RNA, causing the organisms to die. This ensures the cleanliness of drinking water and avoids secondary pollution.
Dense Structure and Recyclability
The organizational structure of copper water pipes is extremely dense, and neither grease, bacteria, viruses, oxygen, nor ultraviolet rays can pass through to pollute the water quality. Copper water pipes can be recycled and reused, with a significant portion of copper recycled every year. Compared with other pipes, the main obstacle to wider application is the price.
Blue Water Misconception
Any metal is eluted with a small amount of metal ions by contact with water, and copper pipes are no exception. For water to appear blue, elution requires at least 100 ppm of copper ions, while drinking water standards allow copper content around 1 ppm, far below the visible threshold. Blue stains occasionally found in bathtubs or washbasins are actually copper soap, an insoluble blue compound formed when trace copper ions react with soap or fatty acids in dirt, and can be removed with kitchen grease cleaner and a sponge.
Frequently Asked Questions
Q: What material is used for copper water pipes?
A: TP2 copper with 99.9 percent purity, drawn as seamless pipe.
Q: Is copper pipe antibacterial?
A: Yes, copper ions kill bacteria such as E. coli and Legionella.
Q: Can copper ions color the water blue?
A: No, visible blue requires 100 ppm while standards allow about 1 ppm.
Q: Are copper water pipes recyclable?
A: Yes, a significant share of copper is recycled every year.
Q: What is the tensile strength of copper water pipe?
A: Above 205 MPa in the annealed condition.
Q: Why is the price the main obstacle?
A: Copper carries a higher material cost than plastic alternatives.
Contact us for TP2 copper water pipes with certified purity, dimensions, and fittings.
