Main technological process of steel pipe fittings: > shaping (welding) > heat treatment > surface treatment > cutting processing > non-destructive testing > surface protection > logo (1) blanking The material used for pipe fittings is mainly pipe, sheet and rod, and the method is selected according to the material characteristics and the shape of the […]
The function of the pipe reducer
The pipe reducer is also one of the chemical pipe fittings used for the connection of two different pipe diameters. It is divided into concentric pipe reducer and eccentric pipe reducer. pipe reducer for diameter specification does not accord with the inner diameter of the process piping, should undertake the corresponding reducing or expanding process, if the […]
Fatigue calculation of bellows compensator
Bellows compensator design fatigue calculation of the fatigue life of bellows compensator failure types and causes of analysis can be seen that the plane stability of bellows, circumferential stability and corrosion resistance are related to its displacement namely fatigue life. The fatigue life of low will be led to the decrease of the bellows stability and […]
Manufacturing process of butt welded seamless elbow
The manufacturing process of butt welded seamless elbow is divided into two kinds: hot rolling (extrusion) seamless elbow and cold drawing (rolling). Cold drawing pipe is divided into two types: circular pipe and heteroid pipe. A brief introduction to welding seamless bend process is as follows: Cold drawing (rolling) : seamless elbow pipe billet and heating to […]
Correlation analysis of water hammer in pipeline for bellows compensators
Bellows compensators are also known as expansion joints and expansion joints. They consist of bellows (an elastic element) which comprise the main part of the work, and end pipe, bracket, flange, pipe and so on. Is a size change with deformation compensation device to effectively use telescopic elastic element and bellows reasons to absorb pipeline, conduit […]
The definition of stainless steel seamless pipe
The definition of stainless steel seamless pipe Stainless steel seamless steel pipe is a kind of steel strip with hollow section and without seams. The characteristics of stainless steel seamless pipe First, the product of the wall is thicker, it is more economical and practical, the wall thickness of the thinner, processing costs will be substantially […]
Welding Process and Heat Treatment of Stainless Steel Welded Pipe
Heat treatment of stainless steel welded pipe widely used abroad there is no oxidation continuous heat treatment furnace with protective gas, the intermediate heat treatment in the process of production and the final finished heat treatment, because of lack of oxidation of the surface of the light can get, and cancel the traditional pickling process. The adoption […]
Key points of cold processing technology of duplex stainless steel pipe
1, the yield strength of duplex stainless steel is twice as tall as austenitic stainless steel, small deformation, than the latter should be adopted when cold rolled must choose appropriate speed and sent to the amount, try to reduce the longitudinal uneven wall thickness and rolling fold. When cold drawing, the steel pipe reduction ratio […]
Removal of stainless steel pipeline
1, the removal of stainless steel pipeline, the first use of plasma cutting machine stainless steel pipeline cut and then manually removed the stainless steel pipeline, if the diameter is greater than DN200 stainless steel pipeline, hand chain hoist can be used to assist lifting. 2, the demolition of the stainless steel pipeline, it should be […]
Heat treatment of stainless steel head
Stainless steel head in the process of heating and cooling, the cooling speed of the stainless steel head due to the surface and center and time inconsistency, formation temperature, will lead to uneven volume expansion and contraction stress, thermal stress. Under the action of thermal stress, as surface temperature is lower than the core, and make […]
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