Details: Size rating:NPS 2"-36" Working Pressure:Class 150LB~2500LB Design STD:ASME B16.34/API 600 Face to face STD:ASME B16.10 Flange End STD:ASME B16.5 Butt Weld end STD:ASME B16.25 Test STD:API598 Bolted Bonnet:ASME B16.10 Special:NACE MR-01-75 Wooden case