RIPRA VÁŠ PDMS PARTNER
Welding fittings
23.05.2014 16:17Maximum internal working pressures for fittings
The allowable pressure ratings for fittings designed in accordance with the standard ASME B 16.9–1993 may be calculated as for straight seamless pipe in accordance with the rules established in the applicable section of the ASME B 31 codes for pressure piping.
| ASME B 31.4 | Liquid transportation systems for hydrocarbons, liquid petroleum gas, anhydrous ammonia and alcohols |
| ASME B 31.5 | Refrigeration piping |
| ASME B 31.1 | Power piping |
| ASME B 31.3 | Chemical plant and petroleum refinery piping |
| ASME B 31.8 | Gas transmission and distribution piping systems |
Hydrostatic testing for fittings
Hydrostatic testing of wrought fittings is not required. All fittings shall be capable of withstanding, without leakage, a test pressure equal to that prescribed in the specification for the pipe with which the fitting’s marking identifies.
—————
