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EN1092-1 WELD NECK FLANGE, CARBON STEEL ASTM A105 FLANGE

EN1092-1 Welding Neck Flange, Size DN300, Pressure PN10, Wall Thickness SCH 20, Material Carbon Steel ASTM A350 LF2, End Connect Raise Face, Standard ANSI B16.5

SCH80 WELD NECK FLANGE , RAISE FACE FLANGE

SCH80 Welding Neck Flange,Gost Standard, Size DN150, Pressure PN16, Wall Thickness SCH 80, Material Stainless Steel ASTM A182 F321, End Connect Raise Face, Standard ANSI B16.5

ASTM A182 F11 WELD NECK FLANGE, CHINA BRAND FLANGE

ASTM A182 F11 Welding Neck Flange, Size 3, Pressure CL150, Wall Thickness SCH60, Material Carbon Steel ASTM A82 F11, End Connect Raise Face, Standard ANSI B16.5

CL300 WELD NECK FLANGE, ASTM A105 CARBON STEEL FLANGE

CL300 Welding Neck Flange, Size 26, Pressure CL300, Wall Thickness SCH120, Material Carbon Steel ASTM A350 LF2, End Connect Raise Face, Standard ANSI B16.5

ASTM A182 F5 WELD NECK FLANGE, CL300 FLANGE

ASTM A182 F5 Welding Neck Flange, Size 6, Pressure CL600, Wall Thickness SCH80, Material Carbon Steel ASTM A182 F5, End Connect Raise Face, Standard ANSI B16.5

ANSI B16.47 A WELD NECK FLANGE, ASTM A105

ANSI B16.47A Welding Neck Flange, Size 26, Pressure CL300, Wall Thickness SCH 40, Material Carbon Steel ASTM A694 F46, 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