Custom 18″ ASME B16.36 orifice flange supplied to Singapore client by Haihao Group
Haihao Group is proud to announce the successful production and delivery of a custom 18-inch orifice flange for a Singaporean client. This specialized flange, manufactured according to ASME B16.36 standards, was custom-designed and produced according to client-supplied drawings. It is made from ASTM A105 carbon steel, rated for Class 300 pressure, and fully compliant with NACE standards for sour service applications.
Product Overview:
Product: Orifice Flange
Size: 18”
Standard: ASME B16.36
Pressure Class: 300#
Material: ASTM A105 (Carbon Steel)
Design Features:
Two 1″ NPT side tapping holes
Flange face and dimensions as per ASME B16.36
Compliance with NACE MR0175 / ISO 15156 for use in corrosive environments
Custom ASME B16.36 orifice flange
Project Significance:
This custom orifice flange plays a critical role in flow measurement and control within piping systems, especially in industries such as oil & gas, petrochemical, and power generation. The addition of the 1″ NPT side outlets allows for the installation of pressure gauges or differential pressure transmitters, essential for accurate flow monitoring.
The client’s specifications required strict adherence to NACE standards due to the corrosive nature of the service environment, ensuring resistance to sulfide stress cracking and other corrosion-related failures.
Quality Assurance:
Haihao Group provided a full set of quality assurance documents, including:
- Material Test Certificates (MTC)
- NACE compliance statement
- Dimensional inspection reports
- Thread inspection for NPT ports
- Surface treatment records (if applicable)
All production processes, including machining of orifice bore and tapping of side holes, were conducted under stringent quality controls to ensure complete conformance to client drawings and international standards.
Key Benefits:
- Custom fabrication per drawing
- NACE-compliant for sour gas service
- Accurate machining of orifice bore and tappings
- Reliable sealing and pressure performance (Class 300)
- Trusted by international clients in the energy and petrochemical sectors
About Haihao Group:
Haihao Group is a trusted manufacturer of high-performance industrial piping components, including flanges, fittings, pipes, and related accessories. With over 30 years of experience, we serve global clients across the oil & gas, power, chemical, marine, and infrastructure sectors. We specialize in custom fabrication, meeting the most stringent project demands and international specifications.
For custom ASME B16.36 orifice flanges, NACE-compliant fittings, or other piping components, contact Haihao Group today for expert support and reliable global delivery.