Welding Elbow National Standard Carbon Steel Elbow Stamping Elbow Seamless Welding Elbow

304 Stainless Steel Elbow Stair Handrail Elbow 90 Degrees Welded Industrial Elbow Sanitary Elbow Fittings

It is required to control the radius of curvature.For example, if the radius length is 1.5D, the radius of curvature must be within the required tolerance.Since most of these pipe fittings are used for welding, in order to improve the welding quality, the end parts are beveled, with a certain Angle and a certain edge. This requirement is also more strict. How thick the edge is, how much the Angle is and the range of deviation are specified, and there are many more items in geometric dimensions than pipe fittings.Elbow surface quality and mechanical properties are basically the same as pipes.For welding convenience, the steel material should be the same as that of the pipe to be connected.
1. Since most pipe fittings are used for welding, in order to improve the welding quality, the end parts are beveled, with a certain Angle and a certain edge. This requirement is also strict.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.
2. All pipe fittings should be surface treated. The iron oxide on the inner and outer surfaces should be sprayed off by shot peening, and then coated with anticorrosive paint.This is for export needs, moreover, in order to facilitate transportation to prevent corrosion and oxidation, we must do this work.
3, is the packaging requirements for small pipe, such as export, you need to do wooden cases, about 1 cubic meter, the number of elbows in the box can not exceed about a ton, the standard allows the set, 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 trademark, etc.