· How to inspect the welding quality of elbow fittings

[2020-09-27]

1. Appearance inspection of elbow fittings: generally, visual inspection is the main method. Through the appearance inspection, it is found that the weld appearance defects of welded elbow pipe fittings are detected by 5-20 times... [READ]

· Classification and general parameters of industrial valves

[2020-09-27]

According to the different functions of opening and closing valves, there are many classification methods of valves. Here, the following several kinds are introduced. 1. Classification by function and use (1) Block valve: block... [READ]

· Polishing process of stainless steel flange

[2020-09-27]

In the production process, the stainless steel flange surface is easy to appear some black oxide skin or stainless steel American standard flange, which is micro inequality, affecting its use value. Only the reprocessing such as... [READ]

· Notes for use of quick fluid connector

[2020-09-27]

1. The fluid must flow from the sleeve side to the plug side. 2. Please use sealing material for external thread of control thread. 3. When installing the thread, please do not exceed the larger tightening torque to prevent... [READ]

· What are the common flange types?

[2020-09-27]

The main types of flange are welding neck, long welding neck, lap joint, threaded and blind flange, slip sleeve, socket welding. In addition to these standard flanges, there are also some special flange, rotary flange, expansion... [READ]

· What is the main function of the valve?

[2020-09-27]

Valve is used to open and close the pipeline, control the flow direction, adjust and control the parameters of the medium (temperature, pressure and flow). According to its function, it can be divided into shut-off valve, check... [READ]