API 650 SUG III tanks ASTM specifications plates

The API 650 is widely used for tanks designed to withstand low internal pressures, for the API 650 SUG III tanks storage of typical products such as crude oil, petrol, chemicals and water. We have extensive experience when it comes to API 650 tanks, varying from tanks built in the factory up to +/- 500m3, to tanks built on-location up to +/-15,000 m3.

Inspection of Butt-welds in Piping
Butt-welds in piping and in API 650 SUG III tanks pipe fittings within the limitations of 1.3.2 (including the annular space of double- wall tanks) shall be inspected in conformance with API 620 oil tank standard Q.7.7.2 through Q.7.7.6. Longitudinal welded joints in piping that contains liquid shall be completely radiographed except for manufactured pipe welded without filler metal, 12 in. or less in diameter, which is tested hydrostatically or by eddy current to ASTM requirements.

All oil tanks have service life. Due to the pressure of the oil stored on the tank and the corrosion of the oil and external environment on the tank, the oil storage tank will gradually become thin or crack after a long time. Due to the different materials and environment of API 650 SUG III tanks, the consumption of API 650 SUG III tanks is different, so it should be taken into account when evaluating the remaining service life of API 650 SUG III tanks.

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