Haokun is top china flange and forgings with 20+ years experience，ISO9001 certified factory. We have strong supply chain, more than 20000 Ton/Year. We supply all kinds of flange for piping design, fittings and valves, equipment and equipment parts (such as manholes, sight glass level gauges, etc.), industrial furnaces, thermal engineering, water supply and drainage, heating and ventilation, automatic control.
1）Body material: Carbon Steel:ASTM A105, 20#, Q235, 16Mn, P355QH, 250GH, 280GH, 350LF2, etc.
2）Alloy Steel: A182F11, 16MnR, C, 12Cr1MoV, 16Mo3, etc. Stainless Steel:304, 304L, 316L, 316, F51, etc.
3）Standards: ANSI/ASME B16.1-16.5
4）Pressure Rating: CLASS 150-2500
5）Sealing surface: RF, MFM, FF, TG, RTJ
6）Size range: DN15---DN1500
7）Connection: Long Welding Neck flange， Swivel Flange， Plate flange， Anchor flange， Blind flange， Threaded flange， Orifice flange， Slip-on flange， Tube Sheet， Welding Neck flange， Lap joint flange， Socket Welding flange， Spectacle blind
Product Description
Haokun's series of Welding Neck flange refers to the flange with neck and round pipe transition and butt welded with the pipe
Welding Neck flange is not easy to deform, well sealed and applied, with corresponding rigidity and elasticity requirements and reasonable butt welding thinning transition. The distance between the weld junction and the joint surface is large, and the joint surface is free from welding temperature deformation. Welding Neck flange adopts a more complex horn shape structure
Technical Specifications
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Body material: |
Carbon Steel:ASTM A105, 20#, Q235, 16Mn, P355QH, 250GH, 280GH, 350LF2, etc. Alloy Steel: A182F11, 16MnR, C, 12Cr1MoV, 16Mo3, etc. Stainless Steel:304, 304L, 316L, 316, F51, etc. |
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Size range: |
1/2’-60” |
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Pressure rating: |
CLASS150-CLASS2500 |
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Applicable medium: |
Water, steam≤1.0MPa, Oil&Gas |
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Mode of operation: |
Manual |
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Sealing surface |
RF, FF, T, G, M, FM, RTJ |
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Applicable industry: |
FPSO, pipelines with large fluctuation of pressure or temperature or pipelines with high temperature, high pressure, and low temperature, It is generally used for the connection of pipes and valves with PN greater than 2.5MPa; Welding Neck flange is also used in pipelines conveying expensive, flammable and explosive media. |
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Design & Manufacture: |
API, ASME, ASTM, ANSI, BS, EN, DIN, JIS, ISO, NORSOK, SANS, GOST, GB. |
