Brief introduction of pipeline fittings
According to the different classification methods of connecting pipes, pipe fittings can be divided into four categories: socket fittings, flange fittings, welded fittings and threaded fittings, which are made of different materials. However, the management of steel is all socket fittings, and welded fittings are divided into welded fittings and seamless fittings.
According to the passage mode of pipe fittings, pipe fittings can be divided into six types: interconnected pipe fittings, including flange pipe fittings, pipe fittings and clamping pipe fittings. Pipe fittings used to change the direction of the pipeline, including elbows and bends; The pipe fittings used to change the pipe diameter include reducing pipe fittings, reducing elbow fittings, branch pipe fittings and reinforcing pipe fittings; Pipe fittings for increasing pipeline branches, including tee fittings and Si Tong fittings; Pipe fittings used for pipeline sealing include gasket pipe fittings, head pipe fittings, flange blind plate pipe fittings, pipe plug pipe fittings and welded plug pipe fittings; The pipe fittings used to fix the pipeline include snap ring pipe fittings, unhook pipe fittings, lifting ring pipe fittings, bracket pipe fittings and bracket pipe fittings.
Standard for pipe fittings
The application standard system of pipeline fittings includes the following contents:
1. Standard system for pipe fittings application in Germany and the former Soviet Union;
2.？ British and French pipe fittings application standard system;
3.ISO, that is, the pipe fitting application standard system of the International Organization for Standardization; ?
4.JIS, Japanese pipe fitting application standard system;
5.ANSI, American pipe fitting application standard system; ?
There are three ways to express the wall thickness of steel pipe, one is the pipe list number, the other is the wall thickness size of steel pipe, and the third is the pipe weight.
1. The pipe list number is Sch, indicating the wall thickness, which is the value obtained by multiplying the ratio of allowable stress of the material at design pressure and design temperature by 1000 and rounding;
2.2 wall thickness grade. ANSIB36. 10 is as follows: Sch 10, 20, 30, 40, 60, 80, 100, 120, 140,/60.
Through this article, do you have a further understanding of pipe fittings and pipe fittings standards?
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