Before welding the metal API 650 flat-bottom tanks, the harmful impurities such as silt, rust and oil on the groove and both sides shall be removed to ensure that the welding surface is fully dry. The welding process of positioning welding is the same as that of formal welding. The arc striking and arc absorbing should be in the groove and on the weld bead, and the T-joint must be positioned. During welding, attention should be paid to the quality of the beginning and end of the weld bead. The backward arc starting method should be adopted at the beginning, and arc starting and test current should not be allowed on the surface of the weldment. If necessary, arc striking plate can be used. The arc pit should be filled at the end. The welding should be started and stopped midway. The welding rod should be changed quickly. Otherwise, the joint should be polished.
After each layer of weld bead is welded, the welding slag shall be removed, and the weld bead shall be polished with grinding wheel. The lower layer of weld bead can be welded only after the welding layer is flush, and the joint shall be staggered T-shaped. All laps of metal API 650 flat-bottom tanks shall be welded at least twice. If the metal API 650 tanks need to be equipped with thermal insulation components, the thermal insulation supporting plate shall be welded with the tank every half meter or so, and the thermal insulation windbreak plate shall be continuously welded with the tank to prevent rainwater leakage.
Henan BEBON Iron & Steel Co., Ltd was founded in 2000, which initially focus on providing high-quality steel products to serve for China's rapid infrastructure development. Based on the advantages of steel resources in domestic market and good reputation, combining with the huge international market demand for steel products, BEBON started the international business in 2010 and successfully being approved and certified by ISO9001:2008, the Registration number is 626014Q11531R0S. With the quality steel products and professional service, BEBON was award the international acclaim from infrastructure, shipbuilding, petroleum industry etc., and gradually grow into a bright star in the steel export industry .
With the exploration and innovation of Bebon people, BEBON gradually formed four major advantageous products: steel plate, steel pipe, stainless steel, special steel, and established our own Machining processing center in order to meet customer's diverse requirements.
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Zhengzhou City, China
