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High frequency welding methods
High-frequency welding with two ways: contact welding and induction welding. Resistance welding electrodes is a pair of copper on both sides of the steel pipe welded portion in contact with the induced current penetration is good, due to the two high-frequency current effects copper electrode in ...Read more -
Galvanized pipe welding defects
Defects in welding of galvanized steel pipe is mainly: thick edge, zinc, steel leakage defect layer falls off the three. 1, the thick edge Specifications thick hot rolled plate, strip running speed is low, when the hot-dip galvanized steel strip edges than in the central zinc zinc layer thickness...Read more -
Hot-rolled seamless steel pipe deformed processes
Hot-rolled seamless steel pipe production base deformation process can be summarized as three stages: perforation, extension and finishing. The main purpose of the perforation process is to become a solid round billet piercing hollow shell. Capillary in the specifications, accuracy and surface qu...Read more -
Heat treatment defects
Heat treatment can improve the processing performance of steel to improve its performance, significantly improve the mechanical properties of steel, and extend its life. Dynamic load and friction in a variety of work under conditions of gears, crankshafts and other parts, they require the surface...Read more -
Galvanized carbon steel
Galvanized carbon steel is steel that has gone through a chemical process to keep it from corroding. The steel gets coated in layers of zinc oxide because this protective metal does not get rusty as easily. The coating also gives the steel a more durable, hard to scratch finish that many people f...Read more -
Features of expanding suppress or necking expanding
Expanding suppress or necking plus expanding repression, certain specifications diameter pipe may also be stamping. Diameter pipe (size head) is a pipe for pipe reducers at The forming process is usually necking repression. 1. The shape of the die used in reference to the drawing surface of the p...Read more -
Effect of rust on the steel surface and the method of adhesion
The surface morphology of steel and rust method used is closely related to its adhesion coating and tube sheets have a great impact. Rust using a wire brush, brush off the rust can tilt the scales and dirt, while the tube sheet adhered to a solid oxide brush can not afford. Use throw (spray) pill...Read more -
How to Maintain the Stainless Steel ?
If treated or stored incorrectly, any grade of stainless steel may discolor or stain. To maintain optimum appearance, the surface should be cared for regularly. During installation The quality of installation affects the durability and lifespan of stainless steel. Therefore, it is important to ma...Read more -
Features of duplex stainless steel
Compared with the austenitic stainless steel, duplex stainless steel of the advantages are as follows: (1) High yield strength than conventional austenitic stainless steel more than doubled, and has molded plastic needs adequate toughness. With wall thickness of duplex stainless steel tank or pre...Read more -
Epoxy coating pipe
Epoxy coated steel pipes is ordinary steel after surface treatment and then made in the characteristics of the steel surface coated with epoxy resin material. This epoxy powder coated steel pipes used has excellent chemical resistance to rust corrosion, scale inside and many other issues long-t...Read more -
Double roll welded pipe
Double roll welded pipe is made of copper plated steel strip by the unique and copper brazing technology of rolling production for a high precision steel tubes. It is plated with a layer of soldering material than steel with low melting point (generally for copper strip), after cold bending formi...Read more -
Difference between galvanized pipe and seamless pipe
Galvanized pipe is protected by zinc, so it is not easy to rust, galvanized steel pipe is lighter than seamless steel pipe, if it is used in the balcony, the best light with galvanized pipe, because seamless steel pipe is heavy with thick wall thickness, and the cost of seamless steel pipe is hig...Read more