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Introduced of the Carbon steel flange
Carbon steel flange, namely the body made of carbon steel flanges or end flange connections. Flange which contains carbon steel, known as carbon steel flange.
Common materialsCommon materials for the casting, forging steel grade WCB A105, or Q235B, A3, 10#, #20 steel, 16 manganese, 45 steel, Q345B etc.
Usually prevent rusting flange surface plating (Huang Xin, white zinc), or brush rustproof oil and spray paint processing.
Technical condition of carbon steel flange
Pressure marking specified in this standard is divided into PN and Class markers.
The PN tag has 12 pressure levels
Were: PN2.5; PN6; PN10; PN16; PN25; PN40; PN63; PN100; PN160; PN250; PN320; PN400
The Class tag has 6 pressure levels
Were: Class 150; Class 300; Class 600; Class 900; Class 1500; Class 2500
Another layer of meaning is carbon steel flange flange: in accordance with the requirements of the national standard size, tolerance range of production, also known as the two standard flange flange is different from not made in standard sizes, usually some unscrupulous merchants will reduce the flange thickness, diameter two dimensions to achieve the aim of saving materials, and the use of scrap steel or scrap steel processing flange, usually this kind of steel is waste material chemical composition and mechanical properties are not up to the standard, even with the black factory private steelmaking steelmaking technology flange, the private steel using the old can not guarantee the mechanical properties and welding performance, may not be and welded steel pipe is used, or the steel cracks, porosity it will also Water Leakage welding.
Carbon steel flange to the selection of the purchase of flange at.
Characteristics and parametersCarbon steel flange close and reliable. It has two sealing surface, and the current valve sealing surface material widely used plastic, good sealing performance, and can be completely sealed. Because the carbon steel flange in the opening and closing process is clean, so can be used with suspended solid particles of the medium.
Model Q41F--16C Q41F--25C American Standard A105 about 0.9% (the standard is 1.05Max with carbon content decreases to 1.65%Max) to the 16Mn GB content about at about 1.3% (1.2% ~ 1.6%) S25C standard would be relatively low below 0.6%.
Chromium content of 0.1% ~ 0.5% (forged flange generally no chromium), the carbon content below 1% and forged flange using high temperature forging manufacturing, some forged flange surface hardness (HRC) ¡Ý 56 (although it can achieve more than quenching layer is only 15 mm or so), because of swaged blue material quenching permeability is poor heart hardness generally only 30 degrees, under normal circumstances, forged flange often by water quenching.
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Article tags: Flange,Carbon steel flange,Power Transmission.
