Seamless Steel Pipe

    There is no treatment of welded steel pipe is black iron pipe.     Welded steel pipe is bent with steel or steel plate is round, square and other shapes and then welded into the surface of the seam with the steel pipe. The blank used in the welded steel pipe is steel or strip.     In the environment of containing sulfuric acid or hydrochloric acid, the higher the Ni content in the T-shaped welded steel pipe, the stronger the corrosion resistance is. In the general environment, only in the T-welding steel pipe to add Cr can prevent the phenomenon of erosion. Poor edge of the strip is another important cause of the wrong side. The influence of mass flow rate, heat flux and structural parameter (ratio of spiral curvature diameter and ratio of polygon welded pipe diameter Dc / D) on saturated bubble boiling heat transfer coefficient in vertical spiral tube.     T-shaped welded steel pipe in the production, the wrong side occurs, the impact ...

    The power power of 60Hz is converted to high frequency power and used for solid metal welding with 90% efficiency.In high frequency welding, the welding power is generally over 100kW, and the power of 4/5 is consumed by heating, impedance, roller and billet heating.Therefore, the key to minimize power loss is to set reasonable coils, impedances and reasonable configurations of rolling mill.In most cases, the power loss can be reduced by 50% by optimizing the welding process, which can improve the welding quality, reduce the downtime and increase the output.     The high frequency welding mechanism is: the voltage is through the edge of the opening part of the pipe, and the induction is used to reach the convergence point.When the current flows through the junction, the metal is heated quickly.By using the pressure of the extrusion roll, the heat is pressed together by the melting of the metal, and the impurity is then squeezed out of the weld.     T...

    Per steel pipe’s 3PE coating process, there are two reasons why coating will be thinner on welded seam. One is because in the forming process, the other is the cooling process.     First, why forming process will cause coating thinner. In formed weld seam, PE coating, generally speaking, is very good. PE near weld seam, in most case, is better than those away from weld seam. But in forming system, PE coating will have some uneven in surface.     Second is in cooling process. Generally speaking, coating thin position is 2 to 3 meters from pipe end. Under inspection, we know that PE in weld seam is almost the same, but after cooling, PE in weld seam will be different. Let’s have a brief introduction about this point. Before the steel pipe goes into cooling line, PE near pipe end will be cut out. When going into water cooling line, water cooling will have influence on both PE cooling and pipe cooling. Under the influence of inner tube wind, most of the...

    SSAW steel pipe, known as the submerged-arc welded helical pipe, is widely used in our daily life as well as engineering project.     Tianjin Xinyue Steel Group produces seamless steel pipe, welded pipe like ERW steel pipe, SSAW steel pipe and LSAW steel pipe which are used in various places nowadays. With large standard scope from API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS, JIS, IS, suppliers can basically meet the demand of clients, including square steel pipes, nickel alloys and more. All production would be meet customers’ exact size and certificate demands and is available for ship worldwide from a number of locations.     With steel pipe’s out diameter from 219.1 mm to 2540mm (8"-100") and wall thickness from 3.2mm to 25.4mm, we can see that there is no much problem for customers once you need the exact products as we can customized it for you. See website of xysteelpipe for overview information. Please visit our product pages f...

    I found that there is the mixed use of plastic pipe and steel pipe like seamless steel pipe in my bathroom last night. I was wondering why. And today I would like to figure out some answers for it.     First of all, we can notice that in some sub-region like the outlet, customers would adopt the steel pipe and the plastic pipe just gets the function of transportation at a house. And there are steel pipes like seamless steel pipe or ERW steel pipe outside the house. Why? According to the pressure test, we would figure out that steel pipe has a good balance and can hold on the water pressure better than plastic pipes. What’s more, it can handle the problem of thermal expansion and contraction especially at summer and winter. So there are steel pipes everywhere outside the house.     Second, we can just use the steel pipe when we heard the first situation. Because steel pipe can endure high temperature test and high pressure purpose. This is why steel ...

    Structural steel is used for making construction steel in various of shapes, which are widely used on construction field. Structural steel shapes, sizes, chemical composition, mechanical properties,etc are regulated by standards in most industrialized field.     Common structural shapes are:     I-Beam: Shaped as I, are widely used in field construction.     HSS shape:   Short for Hollow structural section, including square, rectangular, circular and etc.     Tee: T shaped cross section     Steel Bar: most common seen are round shaped, used as both raw material and structural steel.     Rod: Also called rebar , is a round of square and long piece of steel.     Plate: Also called steel sheet, used as both raw material and structural steel.     There are many shapes of structural steel used in various of construction, come and visit Tianjin Xinyue Steel and we’ll surprise ...