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hebeihaihao

Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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Haihao Group supplies reactor-Grade stud bolts and nuts compliant with ASME SA-193M B16 and SA-194M 2H Standards

Haihao Group, a trusted global manufacturer and supplier of industrial piping components and fasteners, continues to meet the demands of the most stringent engineering applications. We are proud to support our long-term Belarusian customer with a new batch of reactor-grade stud bolts and nuts designed to meet strict mechanical and material standards.

Project-Specific Product Requirements

For this high-precision application in the reactor construction and pressure system industry, Haihao Group is supplying:

  • Stud Bolts: ASME SA-193M Grade B16
  • Heavy Hex Nuts: ASME SA-194M Grade 2H
  • Optional B7 Certification available for cross-compliance

Testing & Certification:

  • Ultrasonic Testing (UT) Report
  • Magnetic Particle Testing (MT) Report
  • PMI (Positive Material Identification) Report
  • Full documentation of chemical composition and hardness results

These fasteners are critical for high-temperature, high-pressure reactor environments, where reliability and compliance are non-negotiable.

Stud bolts and nuts compliant with ASME SA 193M B16 and SA 194M 2H Standards

Stud bolts and nuts compliant with ASME SA 193M B16 and SA 194M 2H Standards

ASME SA-193M B16 Stud Bolts – Engineered for High-Temperature, High-Pressure Applications

ASME SA-193M Grade B16 is a chromium-molybdenum-vanadium alloy steel used primarily for pressure vessels, boiler systems, and nuclear reactors. It offers excellent tensile strength and creep resistance, especially at elevated temperatures.

Typical Applications Include:

  • Reactors & Steam Generators
  • Heat Exchangers
  • Refinery and Chemical Processing Equipment
  • High-pressure flanged connections

ASME SA-194M Grade 2H Nuts – Reliable Strength for Critical Joints

SA-194M 2H nuts are specially heat-treated for use in high-stress bolted connections, ensuring they maintain structural integrity under heavy loads and fluctuating temperatures.

Why Choose Haihao Group?

Haihao Group is certified and experienced in manufacturing and supplying fasteners for nuclear, petrochemical, and power generation sectors. Our products undergo rigorous inspection processes, including UT, MT, PMI, and full material traceability, ensuring compliance with international codes such as ASME, ASTM, and ISO.

We deliver:

Full certification (EN 10204 3.1 / 3.2)

Custom production based on international drawings and standards

Prompt export service to Europe, Middle East, and Southeast Asia

Whether you’re working on a nuclear facility, chemical plant, or pressure vessel project, Haihao Group can provide custom-engineered fasteners to your exact specifications. Contact our team today to request a quote or technical consultation. Email:sales@haihaogroup.com

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