Copper Nickel 90/10 CuNi Pipe Stub End DIN 86037 Copper nickel Weld neck collar inner flanges

We are professional manufacturer of Copper Nickel 90/10 CuNi Pipe Stub End DIN 86037 Copper nickel Weld neck collar inner flanges in china.

cuni 90/10 Stub end also called inner flange, Welding collar ,Composite Weld Neck Flange. It is always used together with outer flange also referred to as backing flange or loose flange. the outer flange is carbon steel with hot dip galvanized.

The cuni 90/10 Stub end sizes are available according to standards like EEMUA, DIN, ANSI & Similar. Furthermore it has details for both inner flanges and outer flanges. It also lists Wall Thickness (WT) and Theoretical Weight for the flanges that which can withstand pressure of 10 bar, 14 bar, 16 bar, 20 bar, etc. 

The stub end, which is essentially a piece of pipe, with one end flared outwards and the other prepared to be welded to a pipe of the same bore size (NPS = nominal pipe size), material and wall thickness. The most widely used fabrication tool for stub ends is the flaring machine, which is able to flare the end of the pipe and then cuts it to length.

DIN 86037-1  Loose flanges and welding necks for pipes of copper-nickel-alloys – Part 1: Assembly

Material :
CUNI 90/10 CuNi10Fe1Mn C70600
CUNI 70/30 CuNi30Fe1Mn C71500

Dimension :EEMUA 145   DIN 86037

Standard:DIN 86037
Size:DN15-DN500
Thickness and Pressure Rating:10bar , 14bar
Material:Copper Nickel CuNi10Fe1,6Mn

CuNi 90/10 Stub End are widely used in shipbuilding industries ,as CuNi 90/10 Stub End shows good resistance in the seawater environment.