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Points of heating welding tube
Pipe processing step requires strict, in which the hot rolling process is very important process, in which to introduce the following precautions during the heating pipe. 1, the pipe must be able to feed one of those metal properties were a good understanding Before rolling, when the deforming fo...Read more -
Defect of Hot-rolled Seamless Steel Pipe
Defect of Hot-rolled Seamless Steel Pipe Separation Located on the inner surface of the steel pipe was vertical distribution, was raised helical, massive metal separation or break-like dissection. Straight inner flap Located on the inner surface of the steel pipe was vertical distribution, showin...Read more -
The difference between structural tubes and fluid tubes
Structural tube: Structural tube is a general structural steel tube, referred to as structural tube. It is suitable for seamless steel tubes for general structures and mechanical structures. The most common material is carbon steel, which can be divided into two types: ordinary carbon structural ...Read more -
Cold drawn seamless steel pipe finish condition
Cold drawn seamless steel pipe finish condition is as follows: Cold finished (hard) BK（+C） Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation Cold finished (Soft) BKW（+LC） The final heat treatment is followed by cold dr...Read more -
Packaging requirements for seamless tubes
The packaging requirements of seamless tubes (smls) are basically divided into two categories: one is ordinary bundling, and the other is loading in similar containers with turnover boxes. 1. Bundled packaging (1) Seamless tubes should be prevented from being damaged during bundling and transport...Read more -
Packaging method of anti-corrosion spiral steel pipe
Packaging method of anti-corrosion spiral pipe: 1. Our country stipulates that the anti-corrosion spiral steel pipe adopts the method of bulk weighing. The size of the baler should be in the middle of 159MM to 500MM as far as possible. The raw material of the baler uses steel belts, each of which...Read more -
Steel Tube Weld Cold Crack
Cold crack reasons: the person to be subjected to welding when a large tensile force can be easily torn in the process of cooling the welding material hardenability; welding cooling rate was too late to escape the residual hydrogen in the weld, a hydrogen atom bonded to a hydrogen molecules to a ...Read more -
How to check the quality of galvanized seamless steel pipe?
There are two types of galvanized seamless steel pipes, hot-dip galvanizing (hot-dip galvanizing) and cold-dip galvanizing (electro-galvanizing). Hot-dip galvanizing has a thick galvanized layer, which has the advantages of uniform coating, strong adhesion, and long service life. However, the cos...Read more -
What are the application fields of welded steel pipe?
Welded steel pipes are widely used in the structural parts of bicycles, motorcycles, tractors, automobiles and large buses. The pipe has a large forging coefficient, strong bending and torsion resistance, smooth surface and light weight. Variable cross-section tubes are used to make collector pol...Read more -
Treatment method for damage of parts of cold drawn welded pipe
The maintenance of cold drawn welded pipe requires regular maintenance according to the corresponding maintenance standards. Even if the working condition is good, it is necessary to carry out all-round maintenance on the welded pipe unit to fundamentally avoid mechanical failure and ensure smoot...Read more -
Identification method of welded pipe and seamless pipe
There are three main ways to identify welded pipes and seamless pipes (smls): 1. Metallographic method Metallographic method is one of the main methods to distinguish welded pipes and seamless pipes. High-frequency resistance welded pipe (ERW) does not add welding materials, so the weld seam in t...Read more -
Steel Pipe Uses in Gas Project
Steel pipe is the most widely used gas pipe project. Its main advantages are: high strength, good toughness, bearing stress, impact resistance and tight, good plasticity, easy welding and thermal processing, the wall thickness is thinner, saving metal. But its poor corrosion resistance, need to h...Read more