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How to prevent heat deformation of straight seam steel pipe problem
How to prevent heat deformation of straight seam steel pipe problem Fine messy mold deformation reason is often messy, but we need to grasp its variation rules, analyze the reasons of its occurrence, the choice of a strange approach to prevent deformation of the mold can be cut, but also can be m...Read more -
High Pressure Steel Pipe
High-pressure steel pipe manufacturing methods are divided into hot-rolled (extrusion, expansion) and cold drawn (rolled) two kinds. Among them, the hot-rolled (extrusion, expansion) OD pipe is 22 ~ 530mm, wall thickness in the range of 2.0 ~ 70mm; cold drawn (rolled) pipe diameter ranges from 10...Read more -
Mechanical properties of seamless steel tubes
The mechanical properties of the seamless steel tube is a important indicator that ensure seamless pipe end-use properties (mechanical properties), which depends on the chemical composition and heat treatment of steel. In steel standards, according to different requirements, it provide the tensil...Read more -
LSAW steel pipe features let it invincible position
LSAW steel pipe features: Longitudinal production process is simple. Low interest rates, rapid development. Plastic, spiral and standard classification: pressurized fluid transport spiral submerged arc welded pipe (SY5036-83 is mainly used for transporting oil, natural gas pipelines; pressure flu...Read more -
How to Weld Large Welded Steel Pipe?
In the welding process of large welded steel pipe, we should pay great attention to the melted region of the work piece and form a molten solder, because the melted region is the connection of cooling and solidifying the material after the pool is formed. Usually, the pressure is required by larg...Read more -
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 -
Gas pipeline internal coating
Gas pipeline coating technology is a certain thickness of the pipe wall spray epoxy, not only avoid acidic gases in the transport pipe wall subject to corrosion, but also to prevent inclusion of other contaminants in the gas stream impurities deposited on the etched surface of the pipe wall side ...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