API standard 650 stainless and carbon steel tank double-flanged, low-type nozzles

API 650 storage tank stipulates that if the thickness of the lower wall panel obtained by calculating the anti-overturning moment is greater than the thickness of the API standard 650 stainless and carbon steel tank hydrostatic pressure test (both do not include the corrosion allowance).

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

Except as permitted by API standard 620 Q.8.6, the test shall be conducted after the entire tank is complete, before the insulation is applied. Except as limited by foundation or stress conditions, the test shall consist of filling the tank with water to the design liquid level and applying an overload air pressure of 1.25 times the pressure for which the vapor space is designed. The load on the supporting foundation shall preferably not exceed the established allowable bearing value for the tank site. Where a thorough evaluation of the foundation justifies a temporary increase, the established allowable bearing may be increased for the test condition, but the increase shall be not more than 25%.

Since the foundation of the company, the Spring Festival Gala is an annual activity held at the end of the year. Now it is a part of the BBN company culture to enrich the employee's life. The annual Spring Festival Gala in 2019 was held on January 20, 2020. There are opening ceremony, leader's speech, BBN steel performance, awards for outstanding employees, lucky draw, party game, curtain call, company group photo, annual Gala dinner and other links.

The company has our own truck fleet, and can transfer products flexibly and quickly. At the same time, we have large warehouses near the ports of Tianjin and Shanghai, so as to ensure that we can deliver high-quality products to customers in the first time. At the same time, it also greatly reduces the transportation cost, and realizes the double harvest of time benefit and economic benefit. Time guarantee is one of the important strengths of our service.