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Big Differences between ERW Steel Pipe and Seamless Pipe
Nowadays, with quick construction of society and rapid development of technology, more and more different kinds of steel pipes are created, such as welded steel pipe, seamless steel pipe, ERW steel pipe and so on, and more and more steel pipes are needed. In the competitive market of steel pipe,...Read more -
Difference of ERW and UOE
1： The difference between raw material and production capacity Raw material of ERW steel pipe is hot rolled steel coils, and raw material of UOE pipe is hot rolled steel plate. So the ERW steel tube can realize continuous assembly line work, high production efficiency, production cost is low; A...Read more -
Heat boiler seamless extrusion technology
Hot extrusion is generally carried out for boiler seamless pipe billet, called a composite extrusion. Composite extrusion is currently the best method for producing stainless steel and high nickel alloy seamless tube boilers. It is a large-diameter composite consisting of two or more metal blank ...Read more -
ERW pipe issues and defects
ERW pipe issues and defects is related to raw materials, production methods, process conditions, equipment status and personnel.Product defects that appear in the production process by the above factors and constraints. This product defects can be divided into roughly two categories: one for prod...Read more -
Difference in ERW and SAWL
Difference in ERW and SAWL Straight seam welded steel pipe, according to welding process can be divided into high frequency resistance welding and submerged arc welding, longitudinal submerged arc welded is short for SAWL, high-frequency straight seam resistance welding is short for ERW. High fre...Read more -
The detection of welding steel pipe.
The detection of welding steel pipe. In terms of the physical method: the physical inspection is a way to measure or test with the help of some physical phenomena.The inspection of materials or internal workpiece defects conditions, generally adopts the method of nondestructive flaw detection.The...Read more -
Seamless pipe quench and heat treatment
Surface quench of seamless pipe Some parts in the workpiece in the alternating load, such as torsion and bending under impact load, the surface layer undertake higher stress than the core part. Occasions of friction, the surface layer is worn, some parts of the surface put forward the requirement...Read more -
Large-size cold-formed square and rectangular pipe production process
Cold-formed square and rectangular pipe, also known as cold-formed rectangular hollow structural sections, as a lightweight, thin-walled, large cross section moment of inertia of the efficient profile, is widely used in construction, automotive, aviation, light industry and machinery manufacturin...Read more -
How to measure hardness of steel pipe ?
Measturing the hardness of the steel pipe, firstly hardness testing of the steel pipe is according to its mechanical properties, including the performance and quality of the feedstock for steel pipe deformed, by stamping, cutting and other processing. Pipe by the mechanical properties of the test...Read more -
How to clean rusted cs pipe?
For the rusted CS pipe, some people use cleaning, but when cleaning, it note that should a solvent, emulsion cleaning the steel surface, this method is only used as an anti-corrosion auxiliary means, for the real removal pipe rust, the role is not strong. In clear pipe rust, you can also use stee...Read more -
Galvanized mild steel pipe
Galvanized mild steel pipe is made of rust corrosion measures are not taken welding (welding furnaces, welding) pipe, seamless steel pipe or other metal clarinet, a certain process of hot-dip galvanizing, zinc coating to make it fit the outer coating, played long steel does not rust after process...Read more -
Effect of cooling water through the pipe welding process performance
Welded square tube water cooling technology: controlled cooling device installed after the finishing mill, the use of rolling after finishing fast deformation, immediately rapidly cooled by welded square tube deformation induced phase transition, the control bars under high temperature grain grow...Read more