ASME B16.11 ASTM A182 F53 Sockolets Delivered to Singapore with Full NACE & Quality Compliance
Recently, Haihao Group successfully delivered a batch of ASME B16.11 ASTM A182 F53 sockolets to a long-term client in Singapore, manufactured and tested in accordance with rigorous specifications for use in sour service environments. These forged fittings are designed for critical high-pressure applications, where reliability and corrosion resistance are essential.

ASTM A182 F53 Class 3000 Sockolets With Full NACE and Quality Compliance
Meeting the Demands of High-Performance Piping Projects
The supplied sockolets were 2″ x 1″ Class 3000, forged from ASTM A182 F53, a super duplex stainless steel known for its outstanding strength and excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. These properties make F53 particularly suitable for offshore, subsea, and refinery projects where media conditions are severe.
The fittings were produced in full compliance with ASME B16.11 and MSS SP-97, ensuring precise dimensional tolerances and compatibility with a wide range of pipe and header configurations.
Moreover, they were manufactured in strict accordance with the client’s internal MD Specification, and fully conform to NACE MR0175 / ISO 15156, making them fit for sour gas and hydrogen sulfide environments without risk of sulfide stress cracking.

Chemical composition testing of the ASME B16.11 ASTM A182 F53 Sockolets
Going Beyond the Standard: Full Scope Testing and Documentation
At Haihao Group, quality doesn’t end with material selection. To ensure product integrity and performance, we provided the client with a comprehensive set of third-party verifiable inspection and test reports, including:
- Chemical composition analysis
- Mechanical property tests (tensile strength, hardness)
- Impact toughness test (for low-temperature applications)
- PMI (Positive Material Identification)
- Ultrasonic Testing (UT)
- Heat treatment records
- Metallographic structure inspection
- Pitting corrosion resistance test – ASTM G48A
All results met or exceeded project requirements. The Mill Test Certificates were issued according to EN 10204 3.1, and reviewed by recognized classification societies as per client request.
This level of transparency and quality control is not just a promise — it’s standard practice at Haihao.

Inspection of the dimensions of the ASME B16.11 ASTM A182 F53 Sockolet
Supporting Precision with Experience
Producing high-performance forged fittings like F53 sockolets requires more than equipment — it demands metallurgical understanding, experience with duplex and super duplex materials, and strict process discipline. Haihao’s experienced team monitored each stage from forging, machining, and heat treatment, to final inspection and packaging.
Thanks to our vertically integrated production and in-house testing capabilities, we’re able to offer fast lead times without compromising technical quality or documentation completeness.
Built for Harsh Conditions – Ready for Global Projects
ASTM A182 F53 is widely used in offshore oil platforms, chemical processing plants, and marine systems where exposure to chlorides and pressure variations is common. With a PREN (Pitting Resistance Equivalent Number) above 40, F53 provides a reliable solution against localized corrosion risks — even in environments containing seawater or sour gas.
Our sockolets are engineered to connect branch lines with minimal weld stress and long-term operational security — a detail that often matters more than price.
Why Clients Continue to Choose Haihao
From Singapore to Saudi Arabia, from super duplex fittings to lined components, Haihao Group continues to support clients with tailored technical solutions, global standards compliance, and full material traceability. Whether it’s a single olet or a complex piping package, we approach each order with the same attention to detail.
If your project requires NACE-compliant forged fittings or custom alloy components under ASME and MSS standards, Haihao is ready to deliver — reliably, and to spec.
📩 Contact Our Technical Team
Need a quotation or technical proposal? Contact us directly at:
📧 sales@haihaopipe.com
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