ASTM A234 pipe API Std 650 liquid storage tanks

The API Std 650 standard published by the American Petroleum Institute (API) is designed to provide the petroleum industry with welded steel tanks for use in the API Std 650 liquid storage tanks storage of petroleum products and other liquid products commonly handled and stored by the various branches of the petroleum industry.

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

All welded seams in the API Std 650 liquid storage tanks bottom, and complete penetration and complete fusion sidewall-to-bottom welds, shall be inspected by means of a vacuum box test as described in Q.8.2.1. Sidewall-to-bottom welds not having complete penetration and complete fusion shall be inspected by means of either a vacuum box test of the inside weld as described in API 620 specification Q.8.2.1, or where approved by the Purchaser, a direct pressure solution film test as described in Q.8.2.2.

The business department is mainly responsible for communicating with customers, from the manufacturing of steel plates, steel pipes and other products, knowing customers' needs and processing conditions, etc. within the time agreed with customers, the delivery time is short, the price is the most competitive, and the service is the best. Their responsibilities are to deal with customer consultation, solve customer problems, update production plans, and instruct the logistics department to deliver products to customers.

Our company is located in the Central Plains, Zhengzhou City, convenient transportation. There is the largest Xinzheng airport, welcome customers from all over the world to visit our company. Our factories are all located near the port. The logistics is very convenient, which can save the delivery time.