Thick-walled seamless steel pipe is a kind of seamless steel pipe. It is named mainly because of the thickness of the wall. It is widely used in pipeline installation to transport chemical liquids such as petroleum and water. Generally, the wall thickness is more than 20 mm. The following is the manufacturing process of the steel pipe: the raw material of the steel pipe is a steel pipe blank, which must be cut by a cutting machine into a blank of about 1 meter in length and sent to the furnace via a conveyor belt Internal heating. The billet is fed into the furnace and heated at a temperature of approximately 1200°C. The fuel is hydrogen or acetylene. During this period, galvanizing will be carried out. What are the common galvanizing methods for thick-walled seamless steel pipes?
Tips: ASTM A53 covers seamless and welded steel pipe with nominal wall thickness. The surface condition is usually black and hot-dipped galvanized. ASTM A53 is produced mainly for pressure and mechanical applications, and is also used for transport of steam, water, gas line pipes. A53 ERW pipe is a typical carbon steel pipe (electric resistance welded).