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Got up knowledge !
Learn about nanomaterials first!
Got up knowledge ! What are the classifications of nanomaterials?
Got up knowledge ! The most comprehensive application of nano materials in history !
Got up knowledge! How does nanomaterials enter the environment?
Source of nanomaterials
Four ways to enter the environment
Got up knowledge! What are the environmental behaviors of nanomaterials?
Schematic diagram of environmental behavior of nanomaterials
Note: The black dots in the figure represent nanomaterials, and the numbers represent their various environmental processes.
Oh my God!
Small nano materials actually have "poison"!
Pathophysiology and toxicological effects of nanomaterials
Nanomaterial cytotoxicity schematic
The blessings of the blessings! How to master the double-edged sword of nano?
Can't demonize the nano,
But you can't relax your vigilance!
Pieces of pipe is a pipe with pipe manufacturing, the pipe manufacturing factory, the welded pipe forming process and forming process of the seamless tube is basically the same, pieces of pipe forming process does not include the welding process; the other is the factory to complete the pipe forming welding process welding flange is required by flange pipe fittings One of them is widely used and popularized in different fields and industries. The scope of application is different, the environment needs to be used is different, and it needs to be used according to certain conditions. The butt welding elbow is completed by two steel plates. Generally, the large diameter elbow is this process. The general caliber of over 600 is basically the butt welding elbow.
Production standard: national standard, American Standard, Japanese standard, British standard, German standard and so on.
Material specification: stainless steel, carbon steel, low alloy steel, alloy steel, etc.
Applicable medium: gas, liquid and steam.
Connection mode: welding (welding).
There are different regulations for heat treatment in different product standards. Not all deformed pipes need to be heat-treated. The wall thickness is 2-55, the mode of transportation is automobiles, trains, ships. The packing method is bundled and the paint is broken. Weight and theoretical weight. The purpose of heat treatment is to eliminate the processing hardening, residual stress and metal deformable defects produced by the forming process, so as to change the metal structure and properties of the tube after forming, to restore to the state before the deformation process or to improve and improve its performance.
Butt Weld Fittings, Pipe Fitting,Carbon Steel Pipe Fitting,Butt Welded Pipe Fittings
Cangzhou Sailing Steel Pipe Co., Ltd , https://www.ghpipefittings.com