API Std 650 carbon steel tank mandatory

This standard applies only to API 650 tank API Std 650 carbon steel tank whose entire bottom is uniformly supported and to API 650 tank in non-refrigerated service that have a maximum design temperature of 93°C (200 °F) or less.

The water dissolved in the oil will be separated out from the oil stored in the API Std 650 carbon steel tank for a long time, and the acidic water layer will appear at the bottom of the API Std 650 carbon steel tank for a long time, which will accelerate the corrosion of the API Std 650 carbon steel tank and cause the wall thinning and even leakage. With the increase of service life, the API Std 650 carbon steel tank must be inspected and cleaned regularly to check the hidden danger.

Production Weld Tests
Production weld test plates shall be welded for API Std 650 carbon steel tank primary-component butt-welded shell plates when welding procedure qualifications are required to be impact tested per Q.6.2 and Q.6.3. The number of production weld tests shall be based on the requirements of Q.6.6.3 and Q.6.6.4. The locations impact tested (i.e., HAZ and/or weld deposits) shall likewise be the same as required for weld procedure qualifications per Q.6.2 and Q.6.3. Weld testing shall be in accordance with Q.6.6.5. Test plates shall be made from plates produced only from the heats that are used to produce the shell plates for the large welded steel tank.

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The company's logistics team adheres to the development concept of “gathering advantages, providing superior services, creating value, and leading the market”, and tightly focuses on the strategic positioning of “developing large-scale steel logistics and building large-scale steel supermarkets”. Facing the whole country and integrating into the world to build an "one center, one network" international circulation system. Through the development of 5-10 years, it is expected to form a modern steel industry with annual operating income exceeding 2.5 billion yuan.