Butt welding
Butt welding elbow is made of steel plate. Draw the expansion diagram of butt welding elbow, then cut the material by gas cutting, then heat it and press it on the press, and then two and a half pieces of elbow will be formed, followed by cutting, then splicing and welding, and the butt welding elbow will be formed. Butt welding elbow is mainly used for making large elbow. Large diameter elbow can also be pushed and punched, but the process cost of butt welding elbow is lower than that of which two types.
Shrimp loin
Xiami Waist Elbow is welded with several sections of coiled pipes with different angles. Compared with the first three processes, Xiami Waist Elbow is much less applied. This process is applicable to manufacturing large elbows of any specification with elbows larger than 1.5D.
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