304 Stainless Steel Wire Elbow Internal Thread Elbow Stainless Steel Wire Buckle Elbow DN25

304 Stainless Steel Wire Elbow Internal Thread Elbow 90 ° 45 ° Stainless Steel Wire Buckle Elbow 4 90 ° DN25

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.

Production methods can be divided into pushing, pressing, forging, casting and so on.
According to the manufacturing standard, it can be divided into GB standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc.
According to its radius of curvature, it can be divided into long radius elbow and short radius elbow. The long radius elbow refers to the outer diameter of the pipe whose radius of curvature is equal to 1.5 times, that is, R=1.5D; Short radius elbow means that its radius of curvature is equal to the outer diameter of the pipe, that is, R= 1.0d. (D is elbow diameter, R is radius of curvature).
According to the pressure grade, there are about 17 kinds of tubes, which are the same as American standards, including Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS The two most commonly used are STD and XS.
According to different shapes and uses, it can be divided into: groove elbow, card sleeve elbow, double socket elbow, flange elbow, reducing elbow, fixed seat elbow, internal and external tooth elbow, stamping elbow, push elbow, socket elbow, butt welding elbow, inner wire elbow and so on.