ASME SB163 SB423 Alloy 825 Seamless Pipe ISO PED Certified

ASME SB163 SB423 Alloy 825 Seamless Pipe ISO PED Certified

Technical Specifications

How Are Flawless Seamless Pipes Made?

The manufacturing of Alloy 825 seamless pipes follows a rigorous protocol. The process begins with the piercing of round bars to establish a high-quality hollow base. During the critical cold rolling stage, precise process control ensures consistent wall thickness throughout the pipe.

Subsequently, the pipes undergo solution annealing. This step optimizes the metallographic structure and eliminates work hardening. The core pickling process effectively removes surface scale, significantly enhancing the chemical stability of the material in complex corrosive media. Prior to final delivery, every pipe must pass strict non-destructive testing and finished product inspections. The entire workflow adheres strictly to ASME specifications to ensure that both dimensional accuracy and physical properties meet all requirements.

Non-Destructive Testing (NDT)

Non-destructive testing is the vital stage in verifying the quality of 825 piping. We utilize Ultrasonic Testing (UT) and Eddy Current Testing (ET) to identify internal and surface defects, ensuring the safety of the pipes under high-pressure conditions.

Each pipe undergoes a rigorous hydraulic test before leaving the factory to verify its pressure limits. PMI test is conducted to verify chemical composition and prevent material mixing, ensuring 100% material compliance. Every 825 seamless pipe provided by MTSCO undergoes a complete NDT process to fulfill our commitment to zero-defect quality.

Physical Properties

Chemical Composition

Where Are These Nickel Alloy Seamless Pipe Used?

· Chemical Processing: Used in storage systems, heaters, and transport pipelines for strong acid media such as sulfuric and phosphoric acid.

· Offshore Engineering: Exhibits excellent resistance to pitting and crevice corrosion in offshore platforms and seawater cooling systems.

· Oil and Gas: Suitable for production tubing, gathering lines, and gas injection systems in Sour Gas wells.

· Nuclear Fuel Processing: Maintains stable material performance and structural integrity within the complex chemical environments of the nuclear industry.

· Pollution Control: Widely applied in equipment such as Flue Gas Desulfurization (FGD) systems that must resist corrosion from complex acidic condensates.

MTSCO maintains extensive supply experience and a proven track record of stable applications in these demanding industrial sectors.

FAQ about Alloy 825 Seamless Pipe

Q1: What international certifications do the products hold?
A1: Our products are certified under the ISO 9001 quality management system and hold PED, M650, and AD2000 certifications.

Q2: How are the steel pipes protected against corrosion and packaged?
A2: Both ends of the pipes are fitted with plastic caps to prevent impact damage. The pipes are then wrapped in woven bags to ensure they remain in perfect condition during long-distance maritime transport.

Q3: Can you provide customization for special sizes and materials in oil and gas projects?
A3: Yes. The close collaboration between MTSCO and our factories allows for high flexibility. We provide customized production solutions for special wall thicknesses, non-standard dimensions, and high-performance alloy materials.