Company Details
  • CANGZHOU HAOYUAN PIPE FITTINGS MFG CO.,LTD

  •  [Hebei,China]
  • Business Type:Manufacturer
  • Main Mark: Worldwide
  • Exporter:71% - 80%
  • Certs:GS, GB, ISO9001, ISO9000, ISO9002, ISO14000
  • Description:GOST 12821 FLANGE,Ansi Flange Dimensions,Pipe Flanges And Flanged Fittings
CANGZHOU HAOYUAN PIPE FITTINGS MFG CO.,LTD GOST 12821 FLANGE,Ansi Flange Dimensions,Pipe Flanges And Flanged Fittings
Home > Products > Steel Flange > Welding Neck Flange > GOST 12821 Welding Flange

GOST 12821 Welding Flange

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    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,FCA,CPT
    Min. Order: 1 Bag/Bags
    Delivery Time: 3 Days

Basic Info

Model No.: DN10-DN2000

Standard: DIN, ANSI, GOST, GOST 12821

Type: Welding Flange, GOST 12821 Welding Flange

Material: Carbon Steel

Structure: Flanges

Connection: Welding

Sealing Surface: RF

Manufacturing Way: Forging

Certification: ISO.UKS.SGS.BV

Package: Wooden Boxes, Wooden Pallets

Brand Name: HAOYUAN

Crafts: Cold Extrusion, Thermoforming, Forging

Nominal Pressure: Pn0.1-Pn20

Application: Water Conservancy, Electric Power, Power Station

Materials: Ct20,09G2S,15XSND,17Q1S.

Size: DN10-DN2000

Additional Info

Packaging: Wooden boxes, Wooden pallets

Productivity: 20T/Day

Brand: HAOYUAN

Transportation: Ocean,Land,Air

Place of Origin: CANGZHOU

Supply Ability: 500T/Month

Certificate: ISO

Product Description

We are a manufacture of steel Pipe Fittings , we can produce kinds of Elbow
Pipe Fitting,Pipe Fitting Eccentric Reducer, Pipe Cap ,Steel Reducing Tee
,Carbon Steel Flange and so on .Steel Flange is including Blind
Flange ,Welding Neck Flange,Slip-On Flange,Long Weld Neck Flange,Weld
Flange and so on .

Now the field of application of the flange is more and more widely, but not for professionals to choose the right flange is very difficult, just to face so many flange standards, such as large caliber Blue and Russian standard flange and American standard flange, of course, some of the British standard flange manufacturers and other manufacturers are like a variety of. We are not very clear. So let me take the Russian standard flange as an example. Explain it
Sealing surface form: protrusion (RF), concavo-convex (MFM), tongue and groove (TG), ring connection (RJ)
Material: Carbon Steel: ASTM A105, 20 #, Q235, 16Mn, ASTM A350 LF1, LF2
CL1 / CL2, LF3 CL1 / CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70;
Stainless steel (Stainess Steel): ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti,
0Cr18Ni9Ti, 321, 18-8;
Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12,
A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8 / III;
Manufacturing standards: ANSI B16.5, HG20619-1997, GB / T9117.1-2000-GB / T9117.4-200, HG20597-1997
Connection: flange nut, bolt connection
Production process: professional forging, forging manufacturing and so on
Processing methods: high-precision CNC lathe turning, general lathe fine car, welding and other processing
Applications: Boiler and pressure vessels, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, stamping elbow food and other industries.

High-quality products

weld neck flange

2 pipe flange

flanged pipe fittings

Welded neck flange not easy to distortion, good sealing, widely used, butt thinning transition weld joints ,horn shape, avoid shape change when welding in high temperature. applicable to high temperature pipeline, high pressure and low temperature pipeline, normally used to connect pipes and valves which PN is greater than 2.5MPa; also used to transport expensive, flammable, explosive media pipeline.

Our packaging

slip on flange

Flange fittings


Steel Flange Production Process

Flange production process


Steel Flange workshop

Flange production

ansi b16 5 flange

carbon steel flange

steel pipe flange

Production Process


Sales Network

Looking for ideal GOST 12821 FLANGE Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Ansi Flange Dimensions are quality guaranteed. We are China Origin Factory of Pipe Flanges And Flanged Fittings. If you have any question, please feel free to contact us.

Product Categories : Steel Flange > Welding Neck Flange

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  • GOST 12821 Welding Flange
  • GOST 12821 Welding Flange
  • GOST 12821 Welding Flange
  • GOST 12821 Welding Flange
  • GOST 12821 Welding Flange
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