Description Welded welded joints are joints in which the roll of the sheet is cut to the desired thickness and cut according to the size of the joints, and after passing through the rolling rollers, they are rounded and then the resulting seam is welded. And they go to the testing and conical stage. This method of production is called "rolling method". This method is mostly used to produce all kinds of profiles used in construction and production of pipes and radiator connections and gas pipes used in building plumbing. Welded joints for concealed seams These types of joints are also made in the same way as above, except that in these welded joints, the welded seam is removed and it is not seen that these types of welded joints are called hidden seams. It is not much different from welded welded joints. Welded welded welded joints are welded by two methods: Electric Resistance Welded-ERW and High Frequency Induction (HFI) Welded Pipe welding. In this method, welding by creating high amperes by electric welding machine causes heat in the edges of the weld and melts these edges, which leads to double bonding of the joint, which is also called "lip-to-lip welding" method and does not require anything. No electrodes. Seamed welded joints are commonly used for low pressures due to the presence of seams. For use in high pressure presses, unbound connections must be used in Manisman. It is not recommended to use welded welded joints for high pressure because the high pressure on these joints will cause them to crack or open. Sealed welded joints are available in various types such as three-way welded welded three-way, welded welded knee joint, seam welded header, seam welded weld conversion. Sealed welded joints used in gas piping and boiler piping are welded to each other or to the pipe using an electric welding machine. For more information, call 09339765265 Call 09123261608.