1. BS EN 1591-1:2013 Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation

2. BS EN 1591-2:2008 Flanges and their joints - Design rules for gasketed circular flange connections - Part 2: Gasket parameters

3. BS EN 1591-4:2013 Flanges and their joints - Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical service pressurized systems

4. BS EN 1592-4:1998 Aluminium and aluminium alloys - HF seam welded tubes - Part 4: Tolerances on dimensions and form for square, rectangular and shaped tubes

5. BS EN 1593:1999 Non-destructive testing - Leak testing - Bubble emission techniques

6. BS EN 1594:2013 Gas infrastructure - Pipelines for maximum operating pressure over 16 bar - Functional requirements

7. BS EN 1595:1997 Pressure equipment made from borosilicate glass 3.3 - General rules for design, manufacture and testing

8. BS EN 1596:1998 Specification for dedicated liquefied petroleum gas appliances - Mobile and portable non-domestic forced convection direct fired air heaters

9. BS EN 1597-2:1997 Welding consumables - Test methods - Part 2:Preparation of test piece for single-run and two-run technique test specimens in steel

10. BS EN 1597-3:1997 Welding consumables - Test methods - Part 3: Testing of positional capability of welding consumables in a fillet weld