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How to buy welded steel pipes?

What is a welded steel pipe? The welded steel pipe refers to a steel pipe which is welded and formed into a shape of a circle or a square by bending a steel strip or a steel plate, and has a seam on the surface thereof. The raw material used for the welded steel pipe is a steel plate or a strip steel. Since the 1930s, with the rapid development of high-quality strip continuous rolling production and the advancement of welding and inspection technology, the quality of welded joints has been continuously improved, the variety specifications of welded steel pipes […]

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Norway’s largest oil pipeline now in place

The latest pipe of what is now Norway’s longest and largest oil pipeline was installed late last week right next to the riser platform at Johan Sverdrup field. The 36-in. pipeline extends 283 km from the Mongstad oil terminal outside Bergen to the giant field in the North Sea. “We have, together with our supplier Saipem, succeeded in laying the oil pipeline to Johan Sverdrup without any serious incidents. It has been a significant operation, involving more than 600 people, who have welded together over 23,000 pipes to create what has now become Norway’s largest and longest oil pipeline,” says […]

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How to get spiral steel pipes?

What is a spiral steel pipe? Spiral steel pipe, also called SSAW steel pipe or spiral welded spiral pipe, are made by hot rolled strip, it is made by extrusion forming under the normal temperature, and then welded by taking the technology of double wire and double-faced submerged-arc. During molding process of spiral steel pipe, steel plate has uniform deformation and light residual stress, thus the surface has no scratches. Spiral steel pipe has more flexible thicknesses and diameters, especially in making high-grade thick pipes with small or medium aperture, these techniques has incomparable advantages in satisfying your needs. Spiral steel […]

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Why do stainless steel pipe fittings need to be solution treated?

What is the solution treatment of stainless steel pipe fitting? The austenitic stainless steel pipe fitting is softened by heat treatment, and the stainless steel pipe fitting is heated to about 950 to 1150 ° C for a certain period of time, so that the carbide and various alloying elements are uniformly dissolved in the austenite, which is called solid solution of the stainless steel pipe fitting. First, the role of heat treatment of stainless steel pipe fittings. Stainless steel pipe fittings manufacturers must take into account the production cost of pipe fittings, but must also consider the factors that […]

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Failure Analysis of Duplex Stainless Steel Tube Cracking after Hydraulic Expan……

In the petroleum, chemical, electric power and other industrial fields, heat exchangers are widely used as a common pressure vessel. The most commonly used is the shell-and-tube heat exchanger, which consists of a casing, a heat transfer tube bundle, a tube sheet, and a baffle. (Baffle) and tube box and other components. In the choice of heat exchanger materials, depending on the temperature and environment, metal, plastic, ceramics and other materials can be used. However, for some equipment operating under severe conditions such as high pressure and strong corrosion, 2205 type ferrite is used at home and abroad. Body-austenitic duplex […]

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What is a alloy steel pipe?

What is a alloy steel pipe? Alloy steel pipe is a kind of steel pipe which is named according to its material- alloy steel. It is made by using alloy steal. Just like the origin of the name of welded steel pipe, it is named according to the manufacturing technique of steel pipe. And there are two kinds of steel pipe, one is the welded steel pipe, and the other is the seamless steel pipe. The Features of Alloy Steel Pipe Made by superior carbon steel, structural steel and stainless heat resistant steel, alloy steel pipe is formed by hot […]

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Analysis of the price trend of China’s steel market in 2018

See the current complex situation of the steel market, control the price trend of the steel market in 2018; talk about seven hot market situation issues closely related to steel supply and demand and price trends. First, China has adjusted its structure, promoted supply-side reforms, and transformed economic development methods. Deep and historic changes are taking place in many fields. Steel production capacity has achieved stage results. For the steel industry to establish a balance between production and demand in the future, steel prices fluctuate at a high level, and lay a foundation for the healthy development of the industry […]

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What Is A Piping System

What Is A Piping System? A Piping System is an assembly of various components put together with a proper method of joints, functionally to transport fluid from its source to destination. The different components put together are defined as piping components. A piping system is a network of pipes, fittings and valves intended to perform a specific job i.e. to carry or transfer fluids from one equipment to another. The plumbing network supplying water at your home is a common example of a piping system. Other more rigorous examples include steam piping in a power plant, milk piping in a dairy, paint […]

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Galvanized Steel Pipe Vs black steel pipe

What is a Galvanized Steel Pipe? Galvanized steel pipe is a steel pipe that has been coated with zinc. This coating protects the steel from corrosion. It is most commonly used for outdoor construction like fences and handrails, or for some interior plumbing. It is also sometimes called galvanized iron pipe. Galvanized steel pipe has been coated with a layer of zinc. The zinc provides a barrier against corrosion so that the pipe may be exposed to the outdoor environmental elements. The protective barrier proves equally effective against damage from indoor humidity. History of Galvanized Steel Pipe The process of galvanization […]

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What Is A LSAW Pipe?

What is a LSAW pipe? LSAW Pipe (Longitudinal Submerged Arc-Welding Pipe), is taking the steel plate as raw material, mold it by the molding machine, then do double-sided submerged arc welding. Through this process the LSAW steel pipe will get excellent ductility, weld toughness, uniformity, plasticity and great sealing. Diameters range and performances of LSAW pipe Pipe O.D: Ф406.4~Ф1422.4mm(16-56in) Pipe Length: Max.12.2m(40ft) Wall Thickness: When the steel grade is X70, the wall thickness ranges from 6.4 to 26.4mm(0.252–1.04in); When the steel grade is lower, the wall thickness will be increased accordingly Product Standard: ISO3183-3; API Spec 5L, GB9711 Capacity: The annual output is 0.2million tons Legnth:8-12.15m Material: API 5L Gr.B-X80, Standard: API spec. 5L; GB9711.1-97   Range of LSAW pipes applied in construction Range of roller pipes: Outer diameter: Ф1200-3800mm  |  Wall thickness: 12-120mm  |  Unit length (max) 3.2m. Note: The specification in the table is available to Q345. Remarks: non-standard dimensions pipes can be produced to customer specifications. Range […]

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