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Alloy 400 Pipe

Alloy 400 Pipe

TORICH Alloy 400 pipes are manufactured from nickel-copper alloy (Alloy 400 / UNS N04400), offering excellent corrosion resistance, mechanical strength, and toughness across a wide range of temperatures. Monel 400 exhibits superior resistance to seawater, hydrofluoric acid, alkalis, and reducing environments. We offer both seamless and welded pipes, suitable for applications in oil and gas, marine engineering, chemical processing, power generation, and other industries.

Outer Diameter: 5mm-420mm (customizable)
Wall Thickness: 0.5mm-55mm (customizable)
Length: Can be customized upon request
Standards: ASTM B165/ASTM B725, Or as per customer specifications.
Steel Grade: Alloy 400 / UNS N04400

Product Introduction

Products Description

 

Our Advantages 

 

1. Superior Corrosion Resistance

  • The high nickel-copper composition of Alloy 400 provides inherent corrosion resistance, unlike many stainless steels, maintaining its corrosion resistance without relying on a passive oxide film.
  • TORICH Alloy 400 Pipe is tested using a spectrometer to ensure the pipe composition meets ASTM B165/ASTM B725 standards.
     

2. High Mechanical Strength and Toughness

  • Our pipes maintain excellent strength, ductility, and toughness from cryogenic temperatures to approximately 480°C.
  • Our pipes undergo cold drawing and appropriate annealing treatments, resulting in stable mechanical properties over a wide temperature range.
     

3. Pipe Quality

  • TORICH Alloy 400 Pipe is available in both seamless and welded forms. The pipes are cold-drawn, resulting in a smooth surface and precise dimensions.
  • The pipes undergo non-destructive testing to ensure no internal defects, guaranteeing uniform wall thickness, consistent mechanical properties, and excellent pressure resistance.
     

4. Surface Quality

  • Our Alloy 400 steel pipes are available with pickled, bright annealed, or polished surface finishes. The pipes are cleaned internally to ensure a smooth and uniform inner surface.
  • We conduct surface defect inspections and provide visual inspection reports according to ASTM requirements to ensure the pipe surface meets customer specifications.
     

5. Machinability and Weldability

  • Alloy 400 is relatively easy to machine compared to other high-performance nickel-based alloys. Our pipes utilize a controlled solution annealing process during production to ensure a uniform grain structure and a smooth surface after cutting.
  • Our pipes are solution-strengthened, exhibiting excellent weldability, and can be welded using various methods such as TIG (GTAW), MIG (GMAW), and SMAW. Our welded pipes undergo rigorous quality testing to ensure leak-free welds.

 

application areas

 

  • Seawater and marine piping systems
  • Heat exchangers and condensers
  • Oil and gas production and processing
  • Chemical equipment
  • Hydrofluoric acid alkylation units
  • Power plants and desalination plants

 

Chemical Composition

Element Ni Cu Fe Mn C Si S
Monel 400 % (max) 63.0 min 28.0–34.0 2.5 2.0 0.3 0.5 0.024

 

Mechanical Properties

Property Tensile Strength (MPa) Yield Strength 0.2% (MPa) Elongation (%) Hardness (HB)
Value ≥ 480 ≥ 170 ≥ 35 ≤ 65

 

Possible Alternative Grades

Alternative Grades Reasons
Monel K500 Its strength and hardness are significantly higher than alloy 400, making it suitable for marine shafts and fasteners, oil and gas valves and pump components, offshore equipment, and high-strength seawater piping systems.
Inconel 600 It possesses excellent oxidation resistance and high-temperature strength, making it suitable for heat exchanger tubes, furnace components, chemical processing equipment, nuclear engineering, and high-temperature piping systems.
Incoloy 825 It exhibits excellent corrosion resistance to sulfuric acid, phosphoric acid, and nitric acid, making it suitable for chemical processing plants, acid production facilities, oil and gas pipelines, pollution control equipment, and pickling lines.

 

Products Show

Alloy 400 Pipe
Alloy 400 Pipe

 

 

Testing Equipment

Eddy Current Flaw Detector
Eddy Current Flaw Detector
Hydraulic Universal Testing Machine
Hydraulic Universal Testing Machine
Intergranular Corrosion Tester
Intergranular Corrosion Tester

 

Factory Equipment

Pickling Equipment

Pickling equipment

Polishing Equipment
Polishing equipment
Cold drawing equipment
Cold drawing equipment

 

Products Package


stainless steel pipe package

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