Haihao Group Supplies High-Quality Flanges to Kazakhstan Client
Haihao Group is pleased to announce the successful shipment of a batch of flanges to a valued customer in Kazakhstan. This order once again demonstrates our capability as a reliable flange manufacturer and exporter, delivering products that meet stringent international standards for oil, gas, and industrial applications.

Haihao Group high quality flanges ready for export to Kazakhstan
Scope of Supply
The shipment covers a diverse range of products, including:
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Spectacle Blind RTJ: 10″ and 14″, Class 900#, ASTM A516 Grade 70, manufactured to ASME B16.48
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Spade Blind RTJ: 10″, Class 900#, ASTM A516 Grade 70, to ASME B16.48
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Weld Neck Flanges RF: 2″, 1 ½″, 4″, and 5″, PN6/STD and PN16/SCH80, ASTM A350 LF2 CL1, to DIN 2631 / DIN 2633
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Blind Flanges RF: ¾″ (ASTM A182 F316L) and 1 ½″ (ASTM B564 825), Class 150#, to ASME B16.5
All flange products are manufactured in strict compliance with customer requirements. Materials conform to NACE standards, with ASTM A516 S ≤ 0.003 and ASTM A350 S ≤ 0.02, ensuring excellent toughness and corrosion resistance. Heat treatment was applied where required, and sealing surfaces were delivered with precision spiral serrations.
Special customization included spade blinds without handle holes and spectacle blinds with one hole, fully aligned with client specifications.
Commitment to Quality
Haihao Group’s weld neck flanges, blind flanges, and spectacle blinds are engineered for reliable performance in demanding environments. From high-pressure RTJ spectacle blinds to forged steel flanges for pipeline systems, every product undergoes strict quality inspections before shipment.
This successful delivery reinforces our position as a trusted flange supplier in Kazakhstan and across global markets, providing customized solutions for pipeline, petrochemical, and energy projects.
📌 Haihao Group remains committed to supplying clients with safe, durable, and precisely manufactured flanges that meet the highest international standards.