API standard 650 aboveground petroleum storage tanks subsurface investigation and construction

Inspection of Butt-welds in Piping
Butt-welds in piping and in API standard 650 aboveground petroleum storage 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.

Under the same sealing effect, the internal floating roof tank of API 650 oil storage tank can further reduce the evaporation loss compared with the API standard 650 aboveground petroleum storage tanks External floating roof tank. This is due to the shielding of the fixed roof and the gas layer between the fixed roof and the internal floating plate, which has more significant heat insulation effect than the double disc floating roof of the API standard 650 aboveground petroleum storage tanks external floating roof tank.

In 2016, we brought our customer to visit our NM400 hot rolled plate; producing line and our shanghai warehouse for 30,000 tons plate and structure. As a result, Our client purchased 500 tons NM400 as first order, which is shipped by 3 times. In future. Our company will always guarantee that all the delivery condition for Hardox plate API standard 650 aboveground petroleum storage tanks provided will be with quenching and tempering, which is the best delivery type according GB/T 24186 standard.

Anti corrosion of API standard 650 aboveground petroleum storage tanks:
After using for a certain period of time, it is necessary to check the corrosion protection of the API standard 650 aboveground petroleum storage tanks. If necessary, the outer wall of the metal oil tank should be painted with new anti-corrosion paint to ensure that the outer wall of the API standard 650 aboveground petroleum storage tanks does not fall off and has good waterproof and rust resistance.
API standard 650 aboveground petroleum storage tanks cleaning:
The long-term use of API standard 650 aboveground petroleum storage tanks will produce impurities on the tank wall and deposit on the tank bottom, resulting in tank corrosion to leakage. According to the safety standard of oil tank, the API standard 650 aboveground petroleum storage tanks shall be cleaned and derusted regularly to ensure the quality of oil stored and the safety of oil tank equipment.

The after-sale service of iron and steel products includes after-sale tracking service, technical guidance, transfer of relevant bills, handling of objections and many other contents. The handling of quality objections accounts for a large proportion. When dealing with these problems, we should distinguish the responsibilities, and compensate or return the inconvenience or loss caused to users due to steel.