Haihao Group Supplies GOST 33259 ASTM 321 Weld Neck Flange Assembly to Belarus
Haihao Group has successfully completed the production and shipment of a GOST 33259 flange assembly for a customer in Belarus. The order includes a complete flange connection package consisting of an ASTM 321 weld neck flange, spiral wound gasket, stainless steel stud bolts, nuts, and washers, providing customers with a ready-to-install piping connection solution.
Designed in accordance with GOST 33259, the products are manufactured to meet the dimensional accuracy, sealing performance, and material requirements required for industrial pipeline systems operating in demanding environments.
Shipment Details
The shipment includes:
- Weld Neck Flange (WN Flange)
- Standard: GOST 33259
- Type: Raised Face (RF)
- Size: DN50 PN16
- Material: ASTM 321 Stainless Steel
- Spiral Wound Gasket
- Size: DN50 PN16
- Stainless steel inner & outer rings: 321 Stainless Steel
- Flexible graphite filler
- Stud Bolts Assembly
- Size: M16 × 80 mm
- Material: 321 Stainless Steel
- Complete with two nuts and two washers
This complete GOST 33259 flange assembly helps simplify on-site installation while ensuring reliable sealing performance and compatibility between all connection components.
ASTM 321 weld neck flange manufactured to GOST 33259
Why ASTM 321 Stainless Steel?
The selected ASTM 321 weld neck flange is manufactured from titanium-stabilized austenitic stainless steel, making it particularly suitable for applications exposed to elevated temperatures.
Key advantages include:
- Excellent resistance to intergranular corrosion
- Improved oxidation resistance at elevated temperatures
- Good weldability without post-weld sensitization concerns
- Reliable mechanical strength for pressure piping systems
- Long service life in petrochemical, power generation, and process industries
For projects requiring stable performance under thermal cycling, ASTM 321 weld neck flange products remain a dependable choice.
Precision Manufacturing According to GOST 33259
Haihao Group manufactures GOST 33259 flange assembly products with strict quality control throughout production.
Each flange is carefully machined to ensure:
- Accurate RF sealing surface dimensions
- Correct bolt hole alignment
- Stable flange thickness and bore tolerance
- Smooth sealing surface finish
- Full compatibility with matching gaskets and fastening systems
The accompanying spiral wound gasket uses expanded graphite filler combined with 321 stainless steel inner and outer rings, providing reliable sealing under fluctuating temperatures and pressures.
Complete Piping Connection Solution
Instead of supplying individual components separately, Haihao Group delivered a complete flange connection package including:
- Weld neck flange
- Spiral wound gasket
- Stud bolts
- Hex nuts
- Washers
Providing a complete GOST 33259 flange assembly reduces procurement time, minimizes installation errors, and helps customers improve construction efficiency on site.
Reliable Export Experience
Haihao Group supplies flanges, pipe fittings, steel pipes, fasteners, and sealing products to customers worldwide. Our production capabilities cover international standards including ASME, EN, DIN, JIS, GOST, and GB, enabling us to support projects across oil & gas, petrochemical, power generation, water treatment, and industrial processing.
Whether your project requires standard pipeline components or customized solutions, our engineering and quality teams ensure every order meets the specified technical requirements before shipment.
If you are sourcing ASTM 321 weld neck flange, GOST 33259 flange assembly, spiral wound gaskets, or complete piping connection packages, Haihao Group is ready to provide professional manufacturing support and worldwide delivery.