Haihao Group Supplies ASTM B564 UNS N06625 Sour Service Flanges for Singapore High-Pressure Project
Haihao Group has successfully completed the manufacturing and shipment of a batch of ASTM B564 UNS N06625 flanges for a Singapore customer. The order includes weld neck flanges, blind flanges, slip-on flanges, long weld neck flanges, and spectacle blind plates manufactured according to ASME B16.5 and ASME B16.48 requirements.
Designed for demanding sour service environments, these nickel alloy flanges were produced with strict material control, complete inspection procedures, and traceable quality documentation to ensure reliable performance in corrosive and high-pressure applications.
Product Overview
| Product | Size Range | Pressure Class | Standard | Material | Facing |
| Blind Flange | 1/2″ – 8″ | 600# / 900# / 1500# | ASME B16.5 | ASTM B564 UNS N06625 | RF |
| Weld Neck Flange | 1/2″ – 8″ | 600# / 900# / 1500# | ASME B16.5 | ASTM B564 UNS N06625 | RF / BW End |
| Slip-On Flange | 1-1/2″ | 1500# | ASME B16.5 | ASTM B564 UNS N06625 | RF |
| Spectacle Blind Fig.8 | 8″ | 600# | ASME B16.48 | ASTM B564 UNS N06625 | RF |
| Long Weld Neck Flange | 1-1/2″ | 1500# | Project Standard / ASME B16.5 | ASTM B564 UNS N06625 | RF / BW End |
ASTM B564 UNS N06625 Flanges for Sour Service Applications
The main products in this shipment are ASTM B564 UNS N06625 flanges, manufactured from nickel alloy 625 material. This alloy is widely selected for applications requiring excellent corrosion resistance, high mechanical strength, and stable performance in aggressive environments.
Nickel alloy 625 offers outstanding resistance against:
- Chloride-induced corrosion
- Pitting and crevice corrosion
- Oxidation at elevated temperatures
- Sour service conditions containing hydrogen sulfide (H₂S)
Because of these properties, ASTM B564 UNS N06625 flanges are commonly used in oil and gas facilities, offshore platforms, chemical processing plants, and other critical pressure systems.
ASTM B564 UNS N06625 sour service weld neck flanges and blind flanges manufactured by Haihao Group
Complete Range of ASME Standard Flanges
This Singapore project included multiple flange types to meet different pipeline connection requirements.
The supplied products include:
- Weld neck flanges with RF facing and BW ends
- Blind flanges for pipeline isolation
- Slip-on flanges for specific connection requirements
- Spectacle blind plates manufactured according to ASME B16.48
- Long weld neck flanges produced according to customer drawings
The weld neck flange sizes covered various pressure classes, including 600#, 900#, and 1500#, with different schedules such as S-10S, S-20, S-30, S-40S, and customized dimensions.
Strict Quality Inspection and Documentation
For this order, Haihao Group implemented a comprehensive inspection plan according to customer requirements. The quality documents included:
- Original material certificates
- Heat treatment reports
- Mechanical property reports
- Inspection and Test Plan (ITP)
- Testing procedures
- Production schedule
- PMI procedure
To guarantee material authenticity and product reliability, all ASTM B564 UNS N06625 flanges underwent strict inspection processes:
- 100% Positive Material Identification (PMI) by direct reading equipment
- 100% Ultrasonic Testing (UT)
- 100% Penetrant Testing (PT)
These inspection procedures ensure that every component matches the specified nickel alloy grade and meets sour service requirements.
Surface Protection During Transportation
Due to the high value and corrosion-resistant characteristics of nickel alloy products, surface protection was carefully considered before shipment.
Haihao Group applied protective measures including:
- Surface protection against scratches and damage
- Protective caps for flange ends
- Export-standard packing suitable for international transportation
These measures help ensure that the flanges arrive at the customer’s facility in excellent condition and are ready for installation.
Haihao Group’s Capability in Nickel Alloy Pipeline Components
Haihao Group has extensive experience manufacturing special alloy pipeline products, including nickel alloy flanges, duplex stainless steel components, stainless steel fittings, and customized forged products.
For projects involving sour service, high pressure, and corrosive media, Haihao Group provides complete solutions from material selection and manufacturing to inspection documentation and global delivery.
If you are looking for a reliable supplier of ASTM B564 UNS N06625 flanges, ASME pressure class flanges, or customized nickel alloy components, Haihao Group is ready to support your next pipeline project.