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FLANGE

ASTM A182 F304H STAINLESS STEEL WELD NECK FLANGE

ASTM A182 F304H Stainless Steel Welding Neck Flange, Size 10 inch, Pressure Class 300, Wall Thickness SCH 40, Material Stainless Steel ASTM A182 F304H, End Connect Raised Face Flange, Standard ANSI B16.5

SCH80 WELD NECK FLANGE , RAISE FACE FLANGE

SCH80 Welding Neck Flange,Size DN50, Pressure CL150, Material Stainless Steel ASTM A182 F316, End Connect Raise Face, Standard ANSI B16.5

ASTM A182 F321 FORGED STEEL WELD NECK FLANGE, ANSI B16.5 STANDARD

ASTM A182 F321 Forged Steel Welding Neck Flange, Size 16, Pressure CL600, Wall Thickness SCH120, Material Stainless Steel ASTM A182 F321, End Connect Raise Face, Standard ANSI B16.5

STAINLESS STEEL ASTM A182 F304L WELD NECK FLANGE, ANSI B16.5 STANDARD FLANGE

Stainless Steel ASTM A182 F304L Welding Neck Flange, Size DN80, Pressure CL300, Wall Thickness SCH 40, Material Stainless Steel ASTM A182 F304L, End Connect Raise Face, Standard ANSI B16.5

EN1092-1 WELD NECK FLANGE, CARBON STEEL ASTM A694 F46 FLANGE

EN1092-1 Welding Neck Flange, Size DN80, Pressure PN10, Wall Thickness SCH 40, Material Carbon Steel ASTM A694 F46, End Connect Raise Face, Standard ANSI B16.5

ASTM A182 F321 FORGED STEEL WELD NECK FLANGE, ANSI B16.5 STANDARD

ASTM A182 F321 Forged Steel Welding Neck Flange, Size 16, Pressure CL600, Wall Thickness SCH120, Material Stainless Steel ASTM A182 F321, End Connect Raise Face, Standard ANSI B16.5

Industrial Flange Solutions: Comprehensive Guide to Blind Flanges, SO Flanges & Weld Neck Flanges

Selecting the right flange is critical for pipeline system safety and efficiency. This guide explores three essential flange types—Blind Flanges, SO Flanges (Slip-On Flanges), and Weld Neck Flanges—detailing their technical specifications, applications, and industry standards to help you optimize your projects.


1. Blind Flange: Reliable Pipeline Termination

Blind flanges are designed to seal pipe ends permanently or temporarily, ideal for pressure testing, maintenance isolation, or future system expansion.

  • Key Features: ASME B16.5/EN 1092-1 certified | Carbon steel/Stainless steel/Duplex options | High-pressure sealing performance

  • Common Uses: Oil & gas storage tanks | Water treatment systems | Industrial equipment inspection ports

2. SO Flange (Slip-On Flange): Cost-Effective Connection

SO flanges offer quick installation and budget-friendly performance for low-to-medium pressure pipelines.

  • Key Features: Dual-welded design for stability | Easy pipe alignment | Reduced labor costs

  • Common Uses: HVAC systems | Food-grade piping | Low-pressure steam lines

3. Weld Neck Flange: High-Performance for Extreme Conditions

Engineered for high-temperature and high-pressure environments, weld neck flanges ensure superior stress distribution and durability.

  • Key Features: Tapered hub welding technology | Fatigue-resistant design | API 6A/ASME B16.25 compliance

  • Common Uses: Subsea oil pipelines | Power plant boilers | Chemical processing reactors


Why Choose Our Flange Products?

✅ Global Certifications: ISO 9001, PED 2014/68/EU, and API Q1 compliant
✅ Custom Solutions: Tailored dimensions, materials (Inconel, Titanium), and face types (RF, FF, RTJ)
✅ Fast Shipping: 20,000+ in-stock flanges | 48-hour expedited delivery for urgent orders

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