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Corrosion resistant CRA Clad and Lined pipe

Corrosion resistant CRA Clad and Lined pipe

Product Detail

Product Tags

Pipe diameter: 632mm
Pipe wall thickness:11mm
Pipe Length:5830mm
Pipe Material:SA516GR.70+UNS N04400
Technique: GTAW Welded.
Grade: SB 127 UNS N04400


Chemical process equipment, crude oil stills, gasoline and fresh water tanks, marine engineering equipment, valves, pumps and fasteners.

The characteristics of Monel 400/ UNS N0400
Monel 400 has excellent resistance to corrosion by many reducing media such as sulfuric and hydrochloric acids. It is generally more resistant to corrosion by oxidizing media than higher copper alloys. Monel 400 resists pitting and stress corrosion cracking in most fresh and industrial waters. It has good resistance in flowing seawater, but under stagnant conditions, pitting and crevice corrosion is induced. Monel 400 is probably the most resistant to hydrofluoric acid in all concentrations up to the boiling point, of all engineering alloys. Monel 400 is notable for its toughness, it does not show embrittlement tendency at cryogenic temperatures. It is work hardenable.

  • Marine engineering
  • Chemical and hydrocarbon processing equipment
  • Gasoline and freshwater tanks
  • Crude petroleum stills
  • De-aerating heaters
  • Boiler feed water heaters and other heat exchangers
  • Valves, pumps, shafts, fittings, and fasteners
  • Industrial heat exchangers
  • Chlorinated solvents
  • Crude oil distillation towers
Chemical Compostion: %
C Mn S Si Ni Cu Fe
0.3max 2.0max 0.024max 0.5max 63.0min 28-34 2.5max

Clad pipe manufacturing process
The point of manufacturing of clad pipe is using metallurgical ways to create the bond. Clad pipe adopts hot rolled or explosive clad plate to combined with carbon steel plate. (There are also other ways to bonding two kinds steel material, like weld overlay, or co-extrusion.)

After we get the CRA clad steel plates, then we begin the process for manufacturing plate to cladding pipe (An sample type):

Clad Steel Plate Checking – UT for Steel plate – Plate Beveling – Preforming – Forming to Pipe (JCOE) – Welding – Rounding – Hydrastatic test – Beveling pipe end – X Ray Test- Ultrasonic Test – Size Inspection and Measuring – Marking – Packing and Storage

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