Haihao Group Successfully Delivers ASME B16.5 Stainless Steel Flanges for Russian Industrial Pipeline Project
Haihao Group has recently completed the production and shipment of a batch of ASME B16.5 stainless steel flanges for a valued customer in Russia. The order covers a wide range of forged stainless steel flanges, including weld neck flanges (WN), socket weld flanges (SW), slip-on flanges (SO), blind flanges (BL), and a spectacle blind manufactured in accordance with ASME B16.48.
As an experienced manufacturer of pipeline components, Haihao Group provides customized flange solutions that comply with international standards and meet demanding project specifications. Every ASME B16.5 stainless steel flange in this shipment underwent strict manufacturing and inspection procedures to ensure reliable performance in industrial piping systems.
Product Overview
| Product | Size | Rating / Schedule | Material | Standard |
| Slip-On Flange RF | 2″ | — | ASTM A182 F304L | ASME B16.5 |
| Spectacle Blind | 4″ | Class 600 | ASTM A240 316L | ASME B16.48 |
| Socket Weld Flange RF | 1-1/2″ | Class 300 / SCH40S | ASTM A182 F304L | ASME B16.5 |
| Weld Neck Flange RF | 3″, 4″, 10″ | Class 150 / SCH10S & SCH80S | ASTM A182 F304L / F316L | ASME B16.5 |
| Weld Neck Flange RF | 2″, 3″, 4″, 10″ | Class 300 / SCH10S | ASTM A182 F304L / F316L | ASME B16.5 |
| Weld Neck Flange RF | 14″, 16″, 2″ | Class 600 / SCH40S & SCH60 | ASTM A182 F304L | ASME B16.5 |
| Weld Neck Flange RF | 3/4″ | Class 2500 / SCH160 | ASTM A182 F304H | ASME B16.5 |
| Blind Flange | 3″ | Class 150 | ASTM A182 F304L | ASME B16.5 |
The shipment demonstrates Haihao Group’s capability to manufacture ASME B16.5 stainless steel flanges across multiple pressure classes, pipe schedules, and stainless steel grades. Whether customers require standard piping components or customized configurations, our production team can deliver products that match project specifications with consistent quality.
ASME B16.5 ASTM A182 F304L and F316L stainless steel flanges manufactured by Haihao Group
Heat Treatment and Corrosion Resistance Verification
For this Russian project, maintaining material performance was a key requirement. All applicable forged flanges received appropriate solution heat treatment to ensure the specified mechanical properties and corrosion resistance were achieved.
In addition, every relevant stainless steel flange successfully passed the Intergranular Corrosion (IGC) Test, confirming that the materials maintain excellent resistance to intergranular attack after heat treatment. This verification is especially important for stainless steel piping systems operating in chemical processing, petrochemical plants, offshore facilities, and energy projects.
| Inspection Item | Result |
| Raw Material Verification | Qualified |
| Dimensional Inspection | 100% Inspected |
| Heat Treatment | Completed to Maintain Mechanical Properties |
| Intergranular Corrosion Test (IGC) | Passed |
| Visual Inspection | No Surface Defects |
| Final Packaging | Export Standard Protection |
Why Customers Choose Haihao Group for Stainless Steel Flanges
With more than four decades of manufacturing experience, Haihao Group supplies forged flanges and piping components to customers in over 100 countries. Every ASME B16.5 stainless steel flange is produced using certified raw materials, advanced machining equipment, and a comprehensive quality management system.
Our manufacturing capabilities include:
- Stainless steel, duplex stainless steel, alloy steel, carbon steel and nickel alloy flanges
- Pressure ratings from Class 150 to Class 2500
- RF, RTJ and FF sealing faces
- Complete material traceability
- Heat treatment and PMI testing
- IGC, mechanical testing and third-party inspection upon request
- Customized packaging for international transportation
These capabilities allow Haihao Group to support projects in oil & gas, LNG, petrochemical, power generation, water treatment, and offshore engineering.
Looking for a Reliable ASME B16.5 Flange Manufacturer?
Whether your project requires standard forged flanges or customized piping components manufactured to international specifications, Haihao Group can provide dependable products with strict quality control and fast global delivery.
If you are sourcing ASME B16.5 stainless steel flanges, weld neck flanges, socket weld flanges, spectacle blinds, or other pipeline products, our engineering and sales teams are ready to assist with technical support, quotations, and customized manufacturing solutions.
Contact Haihao Group today to discuss your next pipeline project.
FAQ
What standards were used for these flanges?
The shipment primarily followed ASME B16.5 for forged flanges, while the spectacle blind was manufactured according to ASME B16.48.
Which stainless steel grades were supplied?
The order included ASTM A182 F304L, ASTM A182 F316L, ASTM A182 F304H forged flanges, along with an ASTM A240 316L spectacle blind.
Were the products heat treated?
Yes. The flanges underwent heat treatment to maintain the required mechanical properties and corrosion resistance.
Did the products pass corrosion testing?
Yes. The stainless steel products successfully passed the Intergranular Corrosion (IGC) Test, confirming compliance with the project’s quality requirements.
Can Haihao Group manufacture customized flange specifications?
Yes. Haihao Group produces forged flanges in various materials, pressure classes, sealing faces, and dimensions according to ASME, EN, DIN, JIS, GOST, and customer drawings.