Lap Joint Flange 2016 high quality carbon steel flange ASTM A105 customized for oil and gas
Established in 1984, Huachao is one of the leading manufacturers and suppliers of quality high-tech lap joint flange. We are equipped with a professional factory which has a strict quality control system. May you need it, welcome to wholesale lap joint flange at competitive price with us.
LAP JOINT FLANGE
Lap Joint Flanges have all the same common dimensions as any other flange named on this page however it does not have a raised face, they used in conjunction with a "Lap Joint Stub End".
These flanges are nearly identical to a Slip On flange with the exception of a radius at the intersection of the flange face and the bore to accommodate the flanged portion of the Stub End.
Their pressure-holding ability is little, if any, better than that of Slip On flanges and the fatigue life for the assembly is only one tenth that of Welding Neck flanges.
They may be used at all pressures and are available in a full size range. These flanges slip over the pipe, and are not welded or otherwise fastened to it. Bolting pressure is transmitted to the gasket by the pressure of the flange against the back of the pipe lap (Stub End).
Lap Joint flanges have certain special advantages:
· Freedom to swivel around the pipe facilitates the lining up of opposing flange bolt holes.
· Lack of contact with the fluid in the pipe often permits the use of inexpensive carbon steel flanges with corrosion resistant pipe.
· In systems which erode or corrode quickly, the flanges may be salvaged for re-use.