Large diameter long radius welding elbow manufactu

Elbow manufacturers

Elbow manufacturers to push the long radius elbow, to select the specifications, put forward the pipe.Expansion rate, through theoretical calculation, the general expansion rate is between 3%-5%, backward.The general expansion rate of short radius 219mm is 50% after the selection of raw materials, according to the elbow specifications chat, in the consideration of the radius of curvature, such as 90 degrees of elbow, through the curvature can calculate how long material can be processed out of 90 degrees of elbow.It can be calculated by theoretical calculation, and then cut off with the fixed length.Finally, push the material.Push machine you may have seen, if you do not see can choose to look at the website push machine, push machine operation is very simple, it is a mandrel or horn, mandrel has a thin thick, push the process is a process of expanding belt bending.There is support at the back, the end of the feeding tube is threaded into the mandrel, and there is a memorial arch at the back to fix the mandrel.In the middle is a trolley, which is either hydraulically driven or mechanically driven by a screw, and then pushes the trolley forward.The trolley pushes the pipe forward along the mandrel, and there is an induction ring outside the mandrel to heat the pipe and heat it well. Then the trolley pushes the pipe down and processes it. After pushing the pipe, the elbow should be polished in this hot state.Should some elbow improper handling, will twist, this is not allowed.In addition, after the head is generally large outside diameter of the front end, to be repaired by manual grinding.Grinding die is actually a press, to have a set of die, two half arc, up and down each one.The outer diameter after grinding has reached the dimension requirement of the finished product.The wall thickness is controlled by the wall thickness of the incoming material.Elbow and pipe wall thickness tolerance is the same, all is 12.5%, in the process of driving system, under normal circumstances wall thickness should not be changed, but if for tool reason, some local wall reduction happens, so generally refer to material, wall thickness to add some allowance, if the elbow is 8.18 mm wall thickness, pipe of the 8.5 mm or so commonly, when pushing system error due to the local reduction of thickness.After finishing the shape, the outer diameter and wall thickness of the elbow have been hit to the requirements, the following finishing process, after sandblasting treatment, the inside and outside surface of the elbow iron scale out, the two ends of the groove treatment for welding.After inspection, typing, painting, packaging and other procedures, you can leave the factory.

Large diameter elbow manufacturer

The material of large diameter elbow is mainly carbon steel, alloy steel, stainless steel and so on.According to the market process can be divided into: welding elbow, stamping elbow, push elbow, casting elbow.The Angle of elbows is divided into: 45°, 90°.180°, these three types of elbow are commonly used, in addition, according to the needs of the project also includes 60° and other abnormal Angle of bend.45E (s) for short radius 45-degree bend, 180e (s) for short radius 180-degree carbon steel bend, and 180e (L) for long radius 180-degree bend, which is a metal pipe fitting used to change the direction of the pipe line on the pipe.The connection method is direct welding is commonly used, and flange connection, hot melt connection, electric melt connection, thread connection and socket connection.Our company mainly sells elbow, tee, large and small head, flange, pipe cap and other pipe accessories manufacturers.The company in recent years to expand the market, products to the United States, Malaysia, Europe and the United States, Africa, Southeast Asia, and so on, good reputation.We in the spirit of quality-oriented, to win the trust of sincerity, continued serious, the spirit of enterprise and the majority of users hand in hand!

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