API Std 650 aboveground petroleum storage tanks seismic use group ii
There is a gap of 100 mm to 500 mm between the shell of API 650 crude oil storage API Std 650 aboveground petroleum storage tanks tank and the floating plate of external floating roof to ensure that there is no chuck during operation. Use API Std 650 aboveground petroleum storage tanks edge sealing system to reduce edge evaporation. The support legs of API 650 crude oil tank floating roof are usually movable and retractable and suspended in liquid.
Impact Tests for High AlloysImpact tests are not required for the high-alloy (austenitic stainless steel) API Std 650 aboveground petroleum storage tanks base materials, nickel alloy based materials, aluminum base materials, and weld deposited for the nonferrous (aluminum) materials. Impact tests are not required for austenitic stainless steel welds deposited by all the welding processes for services of –200°F and above. Austenitic stainless steel welds deposited for service below –200°F by all welding processes shall be impact tested in accordance with Q.6.2 except that the required impact values shall be 75% of the values as given in Q.2.2.2, Item c.
When the day light gradually decreases, the temperature of oil in the API Std 650 aboveground petroleum storage tanks will also decrease, the evaporation speed will gradually slow down, and the pressure in the API Std 650 aboveground petroleum storage tanks will also decrease. When the pressure in the API Std 650 aboveground petroleum storage tanks is lower than the negative pressure rating of the breathing valve, the outside air is sucked into the API Std 650 aboveground petroleum storage tanks through the open vacuum valve, which is the "suction" process of the oil tank.
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As we all know, steel pipes occupy more space in the process of transportation. If there is no good way of packing, the transportation cost for steel pipes will be a big expense. In view of this characteristic, our company is ingenious and adopts the nest package method to solve this problem perfectly. The premise of the nest package is that the diameters of the steel pipes are different, and the small diameter pipe is inserted in the large diameter pipe. This not only saves the volume, but also saves the transportation cost. It also reduces the loading and unloading workload by half, saves precious time, and enables customers to receive goods earlier.
Our company regularly visits customers, consults and follows up the after-sales service, and directly solves problems for customers. In the use of our steel materials, whether quality problems or not, the after-sales will help solve the problem as soon as possible. We promise free life-long replacement for any product quality problems. The sound after-sales service system make you free from worries.