CRA Cladding Pipes

Product: CRA Clad and Lined Steel Pipe

CRA refers to corrosion-resistant alloy. The CRA Clad and Lined Steel Pipe is composed of conventional carbon steel or low alloy steel pipes and a corrosion-resistant alloy layer. The CRA layer is metallurgically cladding to the internal or external surface of the steel pipe. Carbon steel or low-alloy steel pipe is called lining steel.

Inner CRA layer (0.25~6.0mm) normally such as Stainless steel, Duplex, Nickel alloy, Titanium, Hastelloy, Monel, etc. which are suitable for high corrosion environment.

Composition and Structure

CRA Clad Pipe consists of two main components:
Base Material: A conventional carbon steel or low alloy steel pipe, also called backing steel.
CRA Layer: A corrosion-resistant alloy layer metallurgically bonded to the internal (and sometimes external) surface of the steel pipe.

Specification of  CRA Cladding Pipe
Bare Pipe	Seamless pipes and welded pipes
Standard of Bare Pipe	API5L，ASTMA106，ASTMA333 ，ASTMA335, etc
CRA Material	stainless steel and non-ferrous alloys: SS 304, SS 316, SS 317, duplex, alloy 254, SMO 904, Incoloy alloy 825, Inconel alloy 625, Hastelloy C-276, Inconel alloy 59, alloy 31, AL6NX, alloy 20, Monel 400, titanium, aluminum and some copper alloys
Standard of CRA Material	ASTMA240，A263，A264 ，A265，B898，B424，B443，B619，B622，B675，B265，B551
Standard of CRA Cladding Pipe	API5LD

 

Advantages

• Excellent corrosion resistance in harsh environments, including high temperature, high pressure, and corrosive fluids.
• Combines the strength and durability of carbon steel with the corrosion resistance of CRA materials.
• Cost-effective for large-diameter heavy pipelines, as the thin CRA layer provides enhanced properties while minimizing expenses.

Applications

CRA Clad Pipes are widely used in various industries:

oil and gas industry,

Shipbuilding,

chemical plants,

power plants, and so on.

That’s because the CRA layer not only enhances the corrosion resistance of the pipeline but also reduces the cost to a minimum.