A662 Gr C plates API Std 650 carbon steel tank

The API Std 650 carbon steel 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.

Compared with the fixed roof API 650 oil storage tank without API Std 650 carbon steel tank floating roof, there is no evaporation space. In principle, this eliminates the so-called "large breathing loss". Evaporation not only causes the loss of product quantity, but also affects the quality of API Std 650 carbon steel tank product and pollutes the environment.

our company supplied 2300 ton API 5L GrB ERW pipe to Petroleum company in 2016. It takes 35 days for our company to finish all the production according to API 5L standard. The products are used to drilling , gas transmission works. And we supply the API5L PSL1 GR B original Mill Test Certificate, API5L PSL1 GR B pipes picture, the dimension test, the API Std 650 carbon steel tank material, heat number, supplier name and size will be shown on the surface of steel pipe.

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.

We have a professional after-sales service team, the company has developed a clear service process and service standards, after-sales service team members strictly perform after-sales procedures, comply with service standards. The most important thing is that we have set up the correct concept of after-sales service, "customer first, sincere service for users".