Brief introduction of elbow use and technical requ

Brief introduction of elbow use and technical requirements  

Elbow is a common connection pipe fittings in plumbing installation. It is used to connect the pipe at the corner and change the direction of the pipe.  

Other names: 90° elbow, right Angle elbow, love elbow, stamping elbow, pressing elbow, mechanical elbow, welding elbow, etc.  

Use: connect two pipes with the same or different nominal diameters to make the pipes turn 90°, 45°, 180° and various degrees.  

Bending radius less than or equal to 1.5 times of pipe diameter belongs to elbow, and greater than 1.5 times of pipe diameter belongs to elbow.  

The use of elbow pipe fittings: pipe fittings commonly used for connection in pipeline installation, connecting two pipes with the same or different nominal diameter, so that the pipeline can turn at a certain Angle, the nominal pressure is 1-1.6mpa.  

Technical requirements of elbow pipe fittings: Because most pipe fittings are used for welding, in order to improve the welding quality, the end of the pipe is beveled, leaving a certain Angle, with a certain edge, this requirement is also more strict, how thick the edge, how much Angle and the range of deviation are specified.  The surface quality and mechanical properties are basically the same as pipes.  For the convenience of welding, the pipe fittings are of the same steel grade as the pipe to be connected.  

That is, all pipe fittings should be surface treated, and the oxide iron on the inner and outer surfaces should be sprayed off by shot peening, and then coated with anti-corrosion paint.  This is for export needs, moreover, in order to facilitate transportation to prevent corrosion and oxidation, are to do this work.  

It is to the requirement of packaging for small pipe fittings, such as export, need to do wooden cases, about 1 cubic meter, the number of elbow in the box can not exceed about a ton, the standard allows suit, that is, a large set of small, but the total weight generally can not exceed 1 ton.  For large pieces y needs to be packed individually, like 24 "must be packed individually.  Another is the packaging mark, the mark is to indicate the size, steel number, batch number, manufacturer's mark and so on.