Flange Products Supplied to Kazakhstan for Industrial Piping Systems
Haihao Group has recently completed the successful delivery of a batch of carbon steel and stainless steel flanges to a customer in Kazakhstan. The order covers multiple flange types and sizes, manufactured in accordance with ASME B16.5 and supplied to meet different pressure ratings and service requirements in industrial piping systems.
This shipment once again reflects Haihao Group’s capability to supply both standard flanges and custom flanges manufactured according to drawings, ensuring full compliance with project specifications.
Flange Types and Specifications
The delivered products include blind flanges and weld neck flanges, covering both raised face (RF) and ring type joint (RTJ) sealing designs.
Blind Flanges (RF) – Carbon Steel
- Size: 1″, 2″
- Pressure Class: Class 300
- Standard: ASME B16.5
- Material: ASTM A350 LF2 Class 1
- Manufacturing: Standard ASME dimensions and custom production according to customer drawings
ASTM A350 LF2 CL1 blind flanges are widely used in low-temperature and general service conditions due to their good toughness and reliable mechanical performance.
Weld Neck Flanges – Stainless Steel
Type: WN RTJ
- Size: 6″
- Pressure / Pipe Schedule: Class 600 / SCH 40S
- Material: ASTM A182 F316L
Type: WN RF
- Size: 1/2″
- Pressure / Pipe Schedule: Class 300 / SCH 40S
- Material: ASTM A182 F316L
Stainless steel ASTM A182 F316L weld neck flanges offer excellent corrosion resistance and are commonly selected for chemical, oil & gas, and process piping applications.
Manufacturing Standards and Quality Assurance
All flanges in this shipment were produced in strict accordance with ASME B16.5 dimensional and pressure requirements. For flanges manufactured according to drawings, Haihao Group followed customer-approved designs, ensuring accurate dimensions, sealing surfaces, and tolerances.
Each batch undergoes comprehensive quality control, including:
- Raw material verification
- Dimensional inspection
- Visual and surface finish checks
- Full traceability documentation
Reliable Flange Supplier for Central Asia Projects
With extensive experience supplying ASME B16.5 blind flanges and stainless steel weld neck flanges to international markets, Haihao Group continues to support customers in Central Asia with dependable piping connection solutions.
Whether for standard applications or drawing-based customization, Haihao Group provides consistent quality, technical support, and on-time delivery for global industrial projects.



