-
How to Deal With Electrochemical Corrosion of ASTM A179 Cold Drawn Steel Pipe
(1) ASTM A179 cold drawn seamless steel pipe with carbon steel pollution: contact with carbon steel caused by scratches and corrosive media to form the original battery and electrochemical corrosion. (2) ASTM A179 cold drawn steel pipe cutting: slag, splash and other easy to rust the material at...Read more -
longitudinally welded tubes
Longitudinally welded tubes are manufactured from sheet steel drawn from a coil(hot-rolled strip usually 2.75–5 mm thick and 65–300 mm wide). The diameter is determined by the width of the sheet; the correct width is slit at the factory and then formed to create a tube. Rollers/formers shape the ...Read more -
Inspection in API 5L Pipe
Api 5L pipe corrosion is mainly for wall thinning, pitting rot point pit stress cracks. Pipe detection is the application of various technologies truly and records, including basic dimensions (pipe wall thickness and diameter) pipeline straightness road internal and external corrosion in pipeline...Read more -
How solution treatment for stainless steel seamless pipe
For stainless steel seamless pipe, the three elements of the solution treatment temperature, holding time and cooling rate. Stainless steel seamless solution treatment effect is as follows: 1: Make stainless steel seamless organization and composition uniform, which is particularly important for ...Read more -
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