High-Quality Reducing Threaded Flanges Delivered to Singapore
Haihao Group has completed a new shipment of reducing threaded flanges for a long-term customer in Singapore. The supplied product is a 3/4″ × 1/2″ 150# reducing threaded flange RF × 0.5 NPT(F), manufactured from ASTM A182 Grade F51 duplex stainless steel and produced in full compliance with .
Designed for demanding offshore, petrochemical, and high-pressure systems, these F51 reducing threaded flanges offer superior strength, excellent corrosion resistance, and reliable performance in chloride-rich environments.
ASTM A182 GR F51 ASME B16.5 reducing threaded flange manufactured by Haihao Group
Product Specifications
| Product | Size | Material | Standard |
|---|---|---|---|
| Reducing Threaded Flange RF × 0.5 NPT(F) | 3/4″ × 1/2″ 150# | ASTM A182 GR F51 | ASME B16.5, MSS SP-97, NACE MR0175 / ISO15156 |
The flange is equipped with 0.5 NPT(F) threads, machined according to ASME B1.20.1, ensuring precise engagement and leak-proof connection in complex pipeline systems.
Full Testing and Certification Package Provided
To meet the strict quality requirements of the project, Haihao Group supplied a complete set of testing and inspection documentation. Every reducing threaded flange was validated through:
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Chemical composition analysis
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Tensile test report
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Hardness test report
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PMI (Positive Material Identification)
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Impact test report
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Metallographic examination
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Pitting corrosion test (ASTM G48A)
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Ultrasonic testing (UT)
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Mill Test Certificate (EN 10204 3.1)
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Classification society–approved Mill Certificate
These comprehensive reports ensure full traceability and verify that the ASTM A182 F51 reducing threaded flanges meet offshore and high-corrosion service requirements.
Haihao Group’s Commitment to Premium Duplex Steel Flanges
As a trusted global supplier of duplex stainless steel fittings and flanges, Haihao Group continuously invests in advanced machining capabilities and stringent quality control. Our F51 duplex threaded flanges, outlets, pipe fittings, and customized components are widely used in oil & gas, marine engineering, desalination, and chemical industries.
We take pride in supporting international clients with reliable products, timely delivery, and superior technical documentation.