A573 Gr 65 plates API Std 650 self-anchored flat-bottom steel tanks

API 650 external floating roof storage tanks are generally called external floating roof API Std 650 self-anchored flat-bottom steel tanks tanks, which means that the storage tanks are externally open tanks without a dome design, and are equipped with vertical floating roofs. API 650 external floating roof storage tanks are usually used for large More than 20,000 cubic meters of open steel API Std 650 self-anchored flat-bottom steel tanks storage tanks for storing volatile petroleum products such as crude oil, gasoline, kerosene, etc.

As we know, the vertical metal tank, API Std 650 self-anchored flat-bottom steel tanks is welded by many components, and the welding quality of each component determines the later use effect of the API Std 650 self-anchored flat-bottom steel tanks. Professional API Std 650 self-anchored flat-bottom steel tanks manufacturers should have a set of professional skills in the welding process of API Std 650 self-anchored flat-bottom steel tanks. Key points for weld inspection of vertical metal tank, API Std 650 self-anchored flat-bottom steel tanks:
1. It is strictly forbidden to paint the welds before passing the inspection.
2. Visual inspection shall be carried out for welds.
3. NDT shall be carried out on the weld.

The API Std 650 self-anchored flat-bottom steel tanks 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.

Considering the large workload of allocation and transportion for our steel materials, we have built special shipping department, and make it independent form transportation department. The transportation department is in charge of transporting steel materials from our mill and warehouse to the port, and our shipping department is in charge of the shipping matters. So that our whole shipping efficiency is improved, and shorten time for customers to receive goods.

After years of operation and accumulation, the company has formed an operation network covering major economic cities across the country, with a group of high-quality professional logistics technicians and management personnel, strong strength and stable logistics channels. The company's business operations include the loading and unloading of steel raw materials and finished materials, API Std 650 self-anchored flat-bottom steel tanks warehousing, and freight transportation. Our logistics service business has passenger transportation, automobile and construction machinery inspection, logistics information management and operations.