DIN 86037 Flanges

DIN 86037 – 2 Copper Nickel Collar Foreword

DIN 86037 – 2 ( Copper nickel collar din 86037 pn10 and pn 16 ) has been prepared by the Standards Department Marine and Marine Engineering (NSMT) in the DIN.

DIN 86037 – 2 ( Copper nickel collar din 86037 pn10 and pn 16 ) specifies pre-weld bundles for pipes according to  DIN 86019 copper nickel pipes  (DN 20 to DN 400) and DIN 86018 copper nickel welded pipes (DN 450 to DN 1200).

Associated loose flanges are specified in DIN 86037-3, and DIN 86037-1 gives an overview of the complete copper nickel composite weld neck flange connection.

1 DIN 86037 – 2 Copper Nickel Stub End Scope

Copper nickel collar din 86037 pn10 and pn 16 , also named as copper nickel inner flange or copper nickel stub end ,  according to DIN 86037 are used in pipelines on ships.

They serve together with loose flanges or backing flanges according to DIN 86037-3 for the connection of copper nickel pipes to DIN 86018 and DIN 86019 from CuNi10Fe1.6Mn.

2 DIN 86037 – 2  Copper Nickel Collar Normative References

This standard incorporates by dated or undated reference, provisions from other publications. These nor-mativen references are cited in the respective places in the text, and the publications are listed below.

For dated references, subsequent changes or revisions to these publications are included in this standard only if incorporated in it by amendment or revision. For undated references, the latest edition of the referenced publication applies.

DIN 86018:Welded pipes made of wrought copper alloys

DIN 86019:Tubes made of CuNi10Fe1.6Mn – seamless drawn for piping – Dimensions and permissible operating pressures

DIN 86028:Welding collars made of CuNi10Fe1,6Mn – technical delivery conditions

DIN 86037-1:Loose flanges and pre-weld collars for copper-nickel alloy tubes – Part 1: Compilation

DIN 86037-3:Loose flanges and weld-on collars for copper-nickel alloy pipes – Part 3: Loose flanges

DIN ISO 2768-1:General tolerances – tolerances for length and angle dimensions without individual tolerance entry; Identical with ISO 2768-1: 1989

WL 2.1972:Copper-nickel wrought alloy – CuNi10Fe1.6Mn –Pipes

3 DIN 86037 – 2 Copper Nickel Stub End Dimension

Detail X Finish of weld end for wall thickness <3 mm  no welding bevel ≧3mm and ≦5mm , α=30º+5º ﹥5mm , α=45º±2.5º

4 DIN 86037 -2 Material

Chemical composition according to WL 2.1972, strength according to DIN 86028.

5 DIN 86037 -2  Marking

Copper nickel welding collar are to be permanently marked with:

– manufacturer name or manufacturer’s mark,

– Standard main number,

– Form Letter,

– nominal diameter,

– Dimensions of the welding end.

DIN 86037-3 Carbon Steel Flanges Foreword

DIN 86037 has been prepared by the Standards Department Marine and Marine Engineering (NSMT) in DIN, Working Committee NSMT 2.3.1 “Metallic pipes and pipe connections”.

It specifies loose flanges for copper nickel collar according to DIN 86037-2.

An overview of the complete composite weld neck flanges is given in DIN 86037-1.

1 DIN 86037-3 Loose Flanges Scope

Carbon steel loose flanges according to this standard are used for copper nickel pipelines on ships.

They are used together with cunifer collars according to DIN 86037-2 for connecting copper nickel pipes according to DIN 86018 and DIN 86019 copper nickel pipes made of CuNi10Fe1.6Mn.

2 DIN 86037 -3 Normative References

This standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited in the respective places in the text and the publications are listed below. For dated references, subsequent changes or revisions to these publications are included in this standard only if incorporated by amendment or revision. For undated references, the latest edition of the referenced publication applies.

DIN 2642

Loose Flanges –  Nominal pressure 10

DIN 2656

Loose flanges – Smooth collars – Nominal pressure 40

DIN 86018

Welded pipes made of wrought copper alloys

DIN 86019

Tubes made of CuNi10Fe1.6Mn – seamless drawn for piping – Dimensions and permissible operating pressures

DIN 86037-1

Loose flanges and pre-weld collars for copper-nickel alloy tubes – Part 1: Compilation

DIN 86037-2

Loose flanges and pre-weld collars for copper-nickel alloy pipes – Part 2: Pre-welded collars

3 DIN 86037 Backing Flanges Dimensions

Dimensions in millimeters

General tolerances: DIN 2519

4  DIN 86037 Backing Flanges Material

Carbon steel with galvanized with a minimum tensile strength Rm = 360 N / mm2

5 DIN 86037 Backing Flanges Surface Protection

Loose flanges can also be ordered with surface protection. The required information (eg standard, layer thickness) must be included in the designation.