Cladded Pipe

The CRA clad or lined pipe is composed of a conventional carbon steel or low alloy steel pipe and a corrosion-resistant alloy layer. CRA refers to corrosion-resistant alloy. The CRA layer is metallurgically bonded (clad) or mechanically bonded (lined) to the internal or external surface of the steel pipe. The carbon steel or low alloy steel pipe is called base metal, or backing steel; The CRA layer is usually called cladding material or lining. This is economically favorable for large-diameter heavy pipelines since the relatively much thinner CRA layer not only retains enhanced corrosion-resistant properties but also reduces the cost to the minimum. The CRA clad or lined steel pipes are widely used in pipeline transportation systems in the petroleum and natural gas industries. They are also extensively used for marine applications, chemical plant, and power plant, etc.