Flowell manufactures Meter Tubes utilizing orifice flanges, orifice fittings and other primary flow devices such as ultrasonic and turbine meters. Flowell MeterTubes are designed to ASME B31.8 for gas transmission and distribution piping as a standard and comply with API 14.3 or ISO 5167 standards to meet your requirements and assure accurate measurement. All of our welders are individually certified using qualified welding procedures to provide consistent quality fabrication. A standard (1) hour hydrostatic test and radiography are optional per customer request.A standard dye penetrant examination is used on all Meter Tubes. Certified micrometer readings are provided with every tube. Meter tubes may be provided with straightening vanes or flow conditioners to meet customer requirements.