Standards

INTERTUBI S.p.A. produces and markets fittings in accordance with the following European and American standards:

EUROPEAN EN 10253-1
Standard EN 10253-1 deals with wrought non allow carbon steel fittings for general use and without specific inspection requirements (not according to PED). The manufacturer must provide inspection certificates EN 10204/2.2.

EUROPEAN EN 10253-2
Standard EN 10253-2 deals with alloy and allow carbon steel fittings and not alloy with specific inspection requirements for pressure uses (according to PED). The manufacturer must provide inspection certificates EN 10204/3.1 or 3.2.

EUROPEAN EN 10253-3
Standard EN 10253-3 deals with stainless steel fittings without specific inspection requirements (not according to PED). The manufacturer must provide release inspection certificates

EN 10204/2.2. EUROPEAN EN 10253-4
Standard EN 10253-4 came into force in Italy in May 2008. It deals with stainless steel fittings with specific inspection requirements for pressure uses (according to PED). The manufacturer must provide inspection certificates EN 10204/3.1 or 3.2.

EUROPEAN 1092-1
Standard EN 1092-1 defines the requirements regarding flanges, specifying types, dimensions, tolerances, markings, materials, pressure/temperature ratios and the surface finish.

DIRECTIVE PED (97/23/CE)
The application of PED directive (97/23/EU) is compulsory for all pressure equipments (for ex. boilers, heat exchangers). In accordance with EU Directive, it came into force on 29 May 2002, the manufacturer of fittings must have a Quality System operating according to ISO 9001 and certified, by on the basis of a specific evaluation for material produced, recognized by an official authority within the EU.
   
AMERICAN ASME B16.9
The purpose of this standard, which comes under BPVC (Boiler and Pressure Vessel Code) regulation on pressure equipment, is to define dimensions, tolerances, burst tests, inspections and markings for butt welding fittings in size from 1/2” to 48”. There are several standards which define the materials and their mechanical properties for butt welding fittings. Under these standards, the manufacturing sector to which we refere, is governed by ASME B16.9.

AMERICAN ASME B16.5
It defines dimensions, tolerances, tests, controls and marking for welding flanges.