Flanges meet the following national and their standard are detailed in the relevant product tables.
BS 2872 CN102, CN107
ASTM B151 C70600, C71500,
JIS C7060, C7150
DIN CuNi10Fe1Mn, CuNi30Mn1Fe
Composite weld-neck and composite slip-on flanges are made up from components, an inner Flange(Welding collar) in Cu-Ni 90/10 or Cu-Ni 70/30 and an outer flange in carbon steel.
Composite blind flanges are made up from a carbon steel blind flange with a welded-on and machined disc in Cu-Ni 90/10 or Cu-Ni 70/30.
Solid flanges in Cu-Ni 90/10 or Cu-Ni 70/30 are produced from bar or plate by hot forging and machining.
Sliver Alloy Rings
Solid sliver brazing flanges in corporate integral silver brazing alloy rings and under normal circumstances there is generally no need to socket feed with additional brazing alloy.
The silver brazing alloy to AWS A5.8 - BAG1~BAG7, JIS E3261 BAG1~BAG7 OR BS1845 AG1~AG7.
Each flanges is marked with Trade mark, Material and size.
Additional information, such as standard and alloy number and pressure rating, can be added on request.
Composite and solid flanges are available in standard sizes machining those of the relevant pipes and butt welding fittings.
Non-standard size flanges are produced to certain minimum quantity limitations available on application.
Inspection And Testing
A Series of stringent quality-control inspections and test is performed throughout the entire manufacturing process, from melting and alloying to the finished product to ensure product quality which complies with the customer s requirements. Final inspection generally includes visual and dimensional control, as well as chemical and mechanical tests, to ensure chemical, physical and dimensional accuracy.
All flanges are supplied with a certificate individually stating the tests which have been performed in accordance with the relevant specification and/or customer s requirements.
The atmost care is taken to ensure that flanges are fully protected against damage during transit to their destination.