Working pressures and temperatures of components included in this specification
Pipes Seamless and Welded
Pipes are based on BS MA 60, DIN 86007, and ANSI/ASME B31.3The wall thicknesses comply with ANSI B31.3 and DIN 86007 as well as International Association of Classification Societies with additional allowances for robustness to withstand mechanical damage, especially in the smaller sizes. The fit-for-purpose corrosion allowance of 0.5 mm sufficient for entire service life of the piping installation has been included. This corrosion allowance is in accordance with all major classification societies specified for alloys containing ≥10 wt. % Ni and ≥1.5 wt. % Fe. Read more on mechanical properties of pipes.
Flanges Composite and Solid
Included series of composite (lap type) and solid flanges in metric dimensions based on ANSI B16.5, MSS SP-44 and BS 1560
The basic metric dimensions for drilling and flange outside diameters are those given in ANSI B16.5 and MSS SP 44 Class 150 rating with inch size bolting.
The copper-nickel stub end and flange joint faces are machine finished and comply with the corresponding Sections of EEMUA 145 (Read more).
The specification comprises a series for pipe fittings including butt weld, socket welding, capillary brazing, threaded, selfreinforced fittings as well as saddle pieces.
The “building in” dimensions of the butt welding fittings are based on ANSI B16.9 apart from the caps that are based on DIN 28011 (with suitable amendments).
Physical Properties of CuNi 90/10
The basic allowable stresses in tension are in accordance with ASME B31.3 Table A-1.
The welding consumables used for the manufacturing of welded components are in accordance with AWS-A5.7 Class ER CuNi. The welding procedure specification and welder qualification are in accordance with ASME code, section IX.
Testing of Welds
The weld seams are examined by the liquid dye penetrant testing in accordance with ASME code, section VIII, division 1, appendix 8. The radiographic examination is performed for the complete length of each weld to meet the requirements of ASME code, section VIII, UW51.
The gaskets normally used with flanges are those made from aramid fibre with nitrile binder in accordance with ASME B16.21 or equivalent. The gasket hardness shall not be less than 75 Shore. The gaskets shall not be graphited. In order to ensure adequate seating when solid weldneck and solid slip-on flanges are used, irrespective of gasket materials, the gaskets shall be located within the bolt circle. Note: Gaskets should not be used when mating with elastomerlrubber faced flanges.
The majority of components included in this catalogue are available in the PDMS-format. Please contact us for more information.