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Steel Flange

ASME Steel Flange

Standards: ASME B16.5 (up to 24"), ASME B16.47 Series A & B (26" to 60").
Pressure Classes: Class 150, 300, 400, 600, 900, 1500, 2500.
Available Types:
WN (Weld Neck), SO (Slip-On), BL (Blind) SW (Socket Weld), TH (Threaded), LJ (Lap Joint).
Face Types:
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ).
Size Range: 1/2" – 60" (DN15 – DN1500).
Material Selection:
Carbon Steel: ASTM A105 (Standard), A350 LF2 (Low-temp).
High-Yield: ASTM A694 F42, F52, F60, F65, F70.
Stainless Steel: ASTM A182 F304/L, F316/L, F321.
Alloy Steel: ASTM A182 F11, F22, F91.
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ASTM Steel Flange

Material Standards:Carbon Steel, Stainless Steel, Alloy Steel.
Dimension Standards: ASME B16.5 (up to 24"), ASME B16.47 (up to 60"), MSS-SP-44.
Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500; PN6 to PN160.
Types Available: Weld Neck (WN), Slip-On (SO), Blind (BL), Socket Weld (SW), Threaded (TH), Lap Joint (LJ).
Facing Types: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ).
Size Range: 1/2" – 60" (DN15 – DN1500).
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GOST Flange

Specialize in GOST Flange Manufacturer, GOST 12820 Flange Dimensions, GOST 12821 Standards.
The GOST Standard Flanges are stainless steel flanges that can range from DIN15 to DIN1600.
The GOST Flanges are used in offshore oil industries, oil fields, natural,etc.
There are welding neck flanges, blind flanges, plate flanges, butt weld flanges, and so on.
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AWWA Standard Flanges

Design Standards: AWWA C207 (Most common), AWWA C228 (Stainless Steel).
Pressure Classes:
Class B (86 psi) & Class D (150-175 psi) – Standard duty.
Class E (275 psi) & Class F (300 psi) – Heavy duty.
Available Types:
Ring Flanges (Slip-on)
Hub Flanges (For higher pressure stability)
Blind Flanges (For pipeline termination).
Size Range: 4" – 144" (DN100 – DN3600) | Specialists in Large Diameters.
Material Selection:
Carbon Steel: ASTM A36, A105, A181.
Stainless Steel: ASTM A240/A182 Grade 304/L, 316/L.
Facing: Flat Face (FF) as per AWWA standard requirements.
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Custom Steel Flange

Types: Custom steel flanges meet ASME, DIN, JIS, GOST, and AWWA standards.
Size Range: From small-bore precision flanges to ultra-large diameters up to 5000mm (200").
Material Versatility:
Carbon Steel: A105, Q235B, S235JR, A36.
Stainless Steel: 304/L, 316/L, 321, 310S, 904L.
Special Alloys: Duplex S31803/S32205, Inconel, Monel, Hastelloy.
Pressure Ratings: From low-pressure vacuum flanges to Class 2500 / PN400 high-pressure ratings.
Facing Options: Special grooves (O-ring), Tongue & Groove, Ring Type Joint (RTJ), or custom serrated finishes.
Machining: High-precision CNC turning, drilling, and milling for tight tolerance control.
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ANSI Pipe Flanges

Governing Standards: ANSI B16.5 (up to 24"), ANSI B16.47 (26" to 60")
Pressure Classes: 150, 300, 600, 900, 1500, 2500
Size Range: 1/2" to 60"
Facing Types: RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)
Manufacturing Method: Forged and CNC Machined
Temperature Range: -29°C to 538°C (-20°F to 1000°F)
Materials:Carbon Steel, Stainless Steel, Alloy Steel
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ASME B16.5 carbon steel flange

Design Standard: ASME B16.5 (The global benchmark for flanges up to 24").
Material Grade: ASTM A105 (The most trusted forged carbon steel).
Pressure Classes: Class 150, 300, 400, 600, 900, 1500, 2500.
Available Types:
WN (Weld Neck), SO (Slip-On), BL (Blind), SW (Socket Weld), TH (Threaded), LJ (Lap Joint). Sealing Face Types: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF).
Size Range: 1/2" – 24" (DN15 – DN600).
Finish: Anti-rust oil, Black painting, or Hot-dipped galvanized.
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Industrial Orifice Flanges

Manufacturing Standard: ASME B16.36 (The global standard for Orifice Flanges).
Pressure Classes: Class 300, 400, 600, 900, 1500, 2500 (High-pressure specialized).
Available Types:
Weld Neck (WN): Most common for high-pressure measurement.
Slip-On (SO) & Threaded: For lower pressure applications.
Size Range: 1" – 24" (DN25 – DN600).
Material Excellence:
Carbon Steel: ASTM A105。
Stainless Steel: ASTM A182 F316/L, F304/L.
Alloy Steel: ASTM A182 F11, F22.
Facing: Raised Face (RF) or Ring Type Joint (RTJ) for maximum sealing.
Pressure Taps: Precision-drilled NPT or Socket Weld connections for instrumentation.
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ASTM A105 Weld Neck Flange

Material Grade: ASTM A105 (The premier forged carbon steel for piping components).
Dimensional Standard: ASME B16.5 (Standard for 1/2" to 24") | ASME B16.47 Series A & B (For 26" to 60").
Pressure Ratings: Class 150, 300, 400, 600, 900, 1500, 2500.
Facing Options: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF).
Wall Thickness (Schedule): Matches pipe schedule (e.g., SCH 40, SCH 80, SCH 160, SCH XXS).
Size Range: 1/2" – 60" (DN15 – DN1500).
End Finish: Precision Beveled Ends (per ASME B16.25)
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ANSI B16.5 Class 150 Flange

Standard: ANSI / ASME B16.5 (Covers sizes from 1/2" to 24").
Types Available:
SO (Slip-On), WN (Weld Neck), BL (Blind), SW (Socket Weld), TH (Threaded), LJ (Lap Joint).
Material Grades:
Carbon Steel: ASTM A105 (Standard) or custom
Stainless Steel: ASTM A182 F304/L, F316/L, F321.
Sealing Faces: Raised Face (RF), Flat Face (FF).
Surface Treatment: Anti-rust Oil, Black Paint, or Hot-Dipped Galvanized.
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Slip-On Pipe Flanges

Standards: ASME B16.5, EN 1092-1, JIS B2220, DIN 2576,GOST Pressure Ratings: Class 150, 300, 400, 600, 900, 1500
Size Range: 1/2" – 60" (DN15 – DN1500).
Material Selection:
Carbon Steel: ASTM A105
Stainless Steel: ASTM A182 F304/L, F316/L
High-Yield: ASTM A694 F42, F52, F60, F70.
Facing Types: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ).
Surface Treatment: Anti-rust Oil, Black Paint, Hot-Dipped Galvanized, or Cold Galvanized.
Supplied with Mill Test Certificates (MTC) to EN 10204 3.1, ensuring chemical and mechanical compliance for project audit.
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Carbon Steel Socket Weld Flange

Standard Compliance: ASME B16.9, ASME B16.28, ASME B16.49, GOST,EN
Material Grade: ASTM A105
Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500.
Size Range: 1/2" – 24" (can customed)
Facing Types: Raised Face (RF), Ring Type Joint (RTJ).
Bore/Socket Detail: Precision-machined socket depth and diameter to ensure perfect pipe fit-up and optimal weld penetration.
Surface Finish: Anti-rust Oil, Black Painting, or Hot-Dipped Galvanized.
Applications:
High-Pressure Steam and Hydraulic Lines.
Chemical & Petrochemical process piping (small diameter).
Gas Distribution and Instrumentation systems.
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Long Weld Neck Flange

Standards: ASME, GOST ,EN or others
Pressure Classes: Class 150, 300, 400, 600, 900, 1500, 2500.
Material Excellence:
Carbon Steel: ASTM A105
Stainless Steel
Alloy Steel
Length Options: Available in Standard lengths or Bespoke Hub Lengths tailored to your specific vessel insulation and nozzle height requirements.
Facing Types: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF).
Size Range: 1/2" – 24" (Standard) | Custom large diameters available on request.
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Forged Steel Weld Neck Flanges

Standards: ASME B16.5, ASME B16.47 Series A & B (Large Diameter), EN 1092-1, DIN, JIS, GOST.
Pressure Ratings:
ASME: Class 150, 300, 400, 600, 900, 1500, 2500.
Metric: PN 6, 10, 16, 25, 40, 64, 100, 160, 250, 400.
Material Selection:
Carbon Steel: ASTM A105
Stainless Steel
Alloy Steel
Size Range: 1/2" – 60" (DN15 – DN1500) or custom
Facing Options: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF).
Bevel Details: Precision-machined beveled ends according to ASME B16.25 to match your pipe schedule (SCH 40, 80, 160, etc.).
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Forged Steel Plate Flange

Standards: ASME, EN, GOST
Material:
Carbon Steel: ASTM A105.
Stainless Steel
Size Range: DN 10 – DN 2000 (1/2" – 80") or custom
Facing: Flat Face (FF) – precision machined for optimal gasket contact.
Surface Treatment: Anti-rust Oil, Black Paint, Hot-Dipped Galvanized, or Cold Galvanized.
Primary Applications:
Municipal Water Supply and Sewage Treatment systems.
Low-Pressure Industrial Process Piping (Food, Chemical, Oil).
Storage Tank and Pressure Vessel peripheral connections.
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Carbon Steel Lap Joint Flange

Standards Compliance: ASME, GOST,EN
Material: Carbon Steel,stainless steel, alloy steel
Pressure Ratings: Class 150, 300, 400, 600, 900, 1500, 2500.
Size Range: 1/2" – 24" (DN15 – DN600) | Larger sizes available on request.
Facing: Flat Face (FF) – Typical for Lap Joint designs to ensure a smooth backing surface for the stub end.
Surface Finish: Anti-rust Oil, Black Paint, Hot-Dipped Galvanized, or Cold Galvanized.
Application: oil, gas,water/wastewater treatment, industry pipeline,etc.
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Lap Joint Pipe Flange

Standards Compliance: ASME, GOST,EN
Material: Carbon Steel,stainless steel, alloy steel
Pressure Ratings: Class 150, 300, 400, 600, 900, 1500, 2500.
Size Range: 1/2" – 24" (DN15 – DN600) | Larger sizes available on request.
Facing: Flat Face (FF) – Typical for Lap Joint designs to ensure a smooth backing surface for the stub end.
Surface Finish: Anti-rust Oil, Black Paint, Hot-Dipped Galvanized, or Cold Galvanized.
Application: oil, gas,water/wastewater treatment, industry pipeline,etc.
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Threaded Flanges

Standards: GOST,ASME ,EN
Thread Types: NPT , BSPT , or BSPP
Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500.
Size Range: 1/2" – 4" (Most common for threaded) | Large diameters up to 24" available for specialized low-pressure service can be customized
Material Selection:
Carbon Steel: ASTM A105
Stainless Steel
Facing Types: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ).
Surface Treatment: Anti-rust Oil, Black Paint, or Hot-Dipped Galvanized.
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Forged Steel Threaded Flange

The primary benefit of Threaded Flanges is that no welding is required to attach them.
Stocked in sizes from 1/2" to 8". More sizes can be customized.
Carbon Steel Threaded Flanges conform to ASTM A105.
Stainless Steel Threaded Flanges conform to ASTM A182. Both 304L and 316L available.
Classes available range from 150# to 1500#.
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Steel Slip On Flange

Our Supply Range:
Standard: ASTM A105, ASTM A182
Material: Carbon Steel, Alloy Steel, Stainless Steel
Size: 1/2'' to 24'', customized up to 60''
Pressure Ratings: Class 150 to Class 2500
Face Type: RF, RTJ
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Blind Flange

Our Supply Range:
Material: Carbon, Alloy and Stainless Steel
Standards: ASTM A105, ASTM A182,ASME B16.5,GOST,EN
Sizes: 1/2'' to 24'', Customized up to 48''
Thickness: Schedule 10(S) to SCH 160
Pressure Ratings: Class 150 to 2500
Face Type: RF, RTJ
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Blind Forged Steel Flange

Our Supply Range:
Material: Carbon, Alloy and Stainless Steel
Standards: ASTM A105, ASTM A182,ASME B16.5,GOST,EN
Sizes: 1/2'' to 24'', Customized up to 48''
Thickness: Schedule 10(S) to SCH 160
Pressure Ratings: Class 150 to 2500
Face Type: RF, RTJ
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Plate Flange

Standard： ASME/ANSI B16.5, EN 1092-1, DIN , JIS
Material： Carbon Steel， Stainless Steel， Alloy Steel
Size Range:1/2" to 80" (DN15 to DN2000) or customed
Pressure Rating:Class 150 - Class 2500
Facing:Flat Face (FF), Raised Face (RF)
Surface Treatment:Anti-rust Oil, Black Paint, Yellow Paint, Hot-dip Galvanized, Cold Galvanized
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Carbon Steel Forged Steel Flange

Material Grade: ASTM A105/A105N (Most Common), ASTM A350 LF2 (Low Temp), and more.
Manufacturing Standard: ASME/ANSI B16.5, B16.47 Series A & B, DIN, EN 1092-1, JIS, GOST, BS
Flange Types: Weld Neck (WN), Slip-On (SO), Blind (BL), Socket Weld (SW), Lap Joint (LJ), Threaded
Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500; PN6 to PN400
Size Range: 1/2" to 60" (DN15 to DN1500)
Heat Treatment: Normalizing, Annealing, Quenching + Tempering (to enhance toughness)
Surface Coating: Black Paint, Anti-rust Oil, Hot-dip Galvanized, Cold Galvanized, Yellow Varnish
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