Pipe & Fittings

LAP JOINT FLANGES are primarily employed with lap joint stubs, the combined initial cost of the two items being approximately one-third higher than that of comparable welding neck flanges. Their pressure-holding ability is little, if any, better than that of slip-on flanges and the fatigue life of the assembly is only one-tenth that of welding neck flanges. The chief use of lap joint flanges in carbon or low alloy steel piping systems is in services necessitating frequent dismantling for inspection and cleaning and where the ability to swivel flanges and to align bolt holes materially simplifies the erection of large diameter or unusually stiff piping. Their use at points where severe bending stress occurs should be avoided.
Size:3/8& quot;~40& quot;
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:Stainless Steel Lap Joint Flange ,Lap Joint Flange,Stainless Steel Flange, 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.