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THREADED FLANGES are confined to special applications. Their chief merit lies in the fact that they can be assembled without welding this explains their use in extremely high pressure services, particularly at or near atmospheric temperature, where alloy steel is essential for strength and where the necessary post weld heat treatment is impractical. Threaded flanges are unsuited for conditions involving temperature or bending stresses of any magnitude, particularly under cyclic conditions, where leakage through the threads may occur in relatively few cycles of heating or stress; sea welding is sometimes employed to overcome this, but cannot be considered as entirely satisfactory
DN:10~1000
PN:1.0--------58.0
American Series:CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500 and CLASS 6000.
European Series:PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400 Flange Facing Types:Flat Face (FF), Groove (G), Ring Joints Face(R)
Standard:HG20592, ASME16.5-2009, DIN2633, ANSI, JIS. Material:195，Q235，20II，16Mn,20Mn,304,304L,316,316L,321 or as required.
Surface treatment:Transparent oil, rust-proof black oil or hot galvanized.
Special equipment manufacture license:manufacture license of special equipment of P.R.C Marking:according to client’s requirement.
QC staff:10-15.
Inspection:in-house and the third party.
Used for:petroleum, chemical, power, gas, water, line pipe, heat exchanger, shipbuilding, construction, etc.
Tolerance:not less than +_8% of normal wall thickness. Keyword:slip-on flange, SO flange, A105 slip on flange Our
objective:Survival by quality and development by credibility. Special design available to all the production process is made according to clients’requirements strictly.
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