1000m3 oil tank plug welds

The company has a mature technical team whose reponsibility is to design the drawing, choose suitable material and evaluate the whole production processaccording to customers’ requirement. The company is led by talents and technology, and comprehensively promotes its six business segments like steel material supply, precision steel casting, environmental protection equipment, household appliance, 1000m3 oil tank steel structures and oil tank projects. Seeking new developments in new technology and business areas, and fostering a large number of industry-leading, international-level projects.

The 1000m3 oil tank stiffener ring and backing strip (if used) are primary components, and they shall comply with the requirements of API 620 storage steel tank Q.2.1. The stiffener rings may be fabricated from plate using an intermittent weld on alternating sides between the web and the flange.
Except for aluminum or stainless steel tanks, all fillet welds shall consist of a minimum of two passes. The ends of the fillet welds shall be 2 in. from the rat hole (see Figure Q-1), and these welds shall be deposited by starting 2 in. from the rat hole and welding away from the rat hole. An acceptable alternative to the detail that includes stopping fillet welds 2 in. short of the rat hole would be to weld continuously through the rat hole from one side of the stiffener to the opposite side. All craters in fillet welds shall be repaired by back welding.

When the day light gradually decreases, the temperature of oil in the 1000m3 oil tank will also decrease, the evaporation speed will gradually slow down, and the pressure in the 1000m3 oil tank will also decrease. When the pressure in the 1000m3 oil tank is lower than the negative pressure rating of the breathing valve, the outside air is sucked into the 1000m3 oil tank through the open vacuum valve, which is the "suction" process of the oil tank.

BBN steel is a leading suppliers of hot rolled steel plates for engineering applications, offering a variety of plate widths and thicknesses alongside accurate in-house cutting and profiling services. If you would like any more information about our inventory, or would like to place an order with us, pls feel free to contact us.