steel tube

Normalizing is to heat the steel pipe (such as seamless pipe and welded steel tube) to 30~50 degrees above Ac3 or Accm, and cool it at a cooling rate slightly higher than annealing after heat preservation. Annealing is to heat the steel pipe to a temperature of Ac3+30~50 degrees or Ac1+30~50 degrees or below Ac1, and generally cool slowly with the furnace temperature. The purpose of normalizing and annealing: 1. Reduce hardness, increase plasticity, improve cutting and pressure processing performance; 2. Refine grains, improve mechanical properties, and prepare for the next process; 3. Eliminate internal stress caused by cold and hot processing. Annealing and normalizing belong to the same type of heat treatment. In actual production, the selection of annealing and normalizing is mainly considered from the following three aspects. 1. Considering machinability The cutting performance of steel pipes, including hardness, chip brittleness, surface roughness and wear on tools, etc. Generall...

Spiral welded steel pipe (SSAW pipe) will naturally become magnetic due to long-term friction during the production process. If the magnetism is too large, it will cause natural defects such as pores and slag inclusions in the spiral steel pipe, especially the detection rate of linear natural defects such as incomplete penetration and cracks. With the increase of pipeline steel grade, the influence of residual magnetism is particularly prominent. The existence of residual magnetism will produce arc deflection phenomenon when pipeline girth welding is butt joint, which will affect the welding quality. The existence of residual magnetism seriously affects the construction quality, so degaussing is an inevitable process for spiral welded steel pipes before leaving the factory. Degaussing method of spiral steel pipe 1. Wrap the coil outside the steel pipe, connect the coil with alternating current, and gradually reduce the current of the alternating current until it reaches zero. Degaussin...

Australian market has always been known for their high standards and strict requirements. There are extremely rigorous requirements for the production process, dimensional tolerance control, appearance details, and relevant documents. In recent years, our company has gradually established a good reputation in the Australian market, accumulated a lot of high-quality customers, and successfully cooperated with a number of large engineering projects. In late September 2021, Xinyue received an urgent inquiry for flanges and fittings from an regular customer. This is a supplementary material list for a client's ongoing construction project. Last year, our company have successfully supplied ERW pipe and relevant fittings for main pipelines of this project. The client highly praised the quality of ERW pipe, flanges and fittings which we supplied last year, so this supplementary materials is directly awarded to Xinyue. However, due to the ongoing project, the required delivery date is very...

Xinyue Steel is a leading manufacturer of steel pipes with a wide range of products including seamless steel tubes, welded steel pipes, and anti-corrosion steel pipes. Among them, the GOST 3872 seamless steel tube is one of their most popular products due to its high quality and reliability. GOST 3872 is a Russian standard for seamless cold-drawn steel tubes. The standard specifies the technical requirements for seamless steel tubes used for the manufacture of pipelines and equipment in the oil and gas industry, as well as other industrial applications. The tubes are made from carbon and low-alloy steel and are available in different sizes and thicknesses. Xinyue’s GOST 3872 seamless steel tubes are produced using the latest technology and equipment, ensuring that they meet the highest quality standards. They are widely used in the oil and gas industry for drilling, production, and transportation of oil and gas. The seamless design of the GOST 3872 steel tubes makes them ideal for use ...

Tianjin Xinyue industry and Trade Co., Ltd. is mainly engaged in steel export business. Its products are widely used in oil, natural gas, water, building steel structure, coastal construction, dredging and pile driving projects. At present, it has undertaken a number of international oil and gas transmission projects, dredging and piling projects, bridge projects, etc. The scope of export radiation includes Southeast Asia, the Middle East, Europe, South America and Africa. In addition, Xinyue has been highly praised by customers at home and abroad. The order for this time was from Malaysia, and the customer was a leader in the local oil and gas industry. In the first time of video conference, the sales specialist knew that the order required seamless steel pipes, and there were two core issues that directly affected the cooperation. The first key point was the delivery date of this batch of goods, it was very urgent due to the tight progress of the terminal project. The second key poin...

Xinyue Steel has established itself as a leader in the production and distribution of high-quality steel products. Among its extensive product line is the petroleum pipeline, which has been designed specifically to meet the needs of the oil and gas industry. In this article, we’ll discuss the features and benefits of Xinyue Steel’s petroleum pipeline, as well as its applications in the oil and gas sector. Petroleum pipelines are used to transport crude oil, natural gas, and other petroleum products from extraction sites to refineries and processing plants. Xinyue Steel’s petroleum pipeline is made from high-quality steel, which ensures durability and longevity. The pipeline’s steel composition provides excellent resistance to corrosion, which is critical for the transport of petroleum products. One of the main advantages of Xinyue Steel’s petroleum pipeline is its ability to withstand high pressures and extreme temperatures. This is achieved through the use of advanced manufacturing te...

Xinyue Steel has established itself as a leading supplier of steel pipes and tubes to various industries worldwide. The company’s products are known for their quality, durability, and versatility. Xinyue Steel’s steel pipes and tubes are used in various applications in both onshore and offshore projects. One of the most significant applications of Xinyue Steel’s pipes and tubes is in the oil and gas industry. The company’s products are used in both onshore and offshore oil and gas exploration and production projects. The pipes and tubes are used for drilling, extraction, and transportation of oil and gas. Xinyue Steel’s pipes and tubes are preferred by oil and gas companies because of their high strength, corrosion resistance, and durability. Another essential application of Xinyue Steel’s products is in the construction industry. The company’s steel pipes and tubes are used in the construction of buildings, bridges, highways, and other infrastructure projects. Xinyue Steel’s pipes and...

Xinyue Steel is a leading supplier of galvanized scaffolding tubes, which are widely used in construction areas for support and stability. The galvanized coating on the tube provides added protection against corrosion and rust, ensuring a long-lasting and sturdy foundation for any construction project. In this article, we will explore the benefits of Xinyue Steel’s galvanized scaffolding tube and how it can benefit construction projects. Durability: One of the main benefits of Xinyue Steel’s galvanized scaffolding tube is its durability. The galvanized coating on the tube provides protection against corrosion and rust, which can weaken the structure over time. This means that the scaffolding tube will maintain its strength and support even under harsh weather conditions, making it a reliable choice for construction projects. Cost-Effective: Using Xinyue Steel’s galvanized scaffolding tubes can be a cost-effective option for construction projects. The tube’s durability ensures that it c...

How to produce all kinds of spiral steel pipes from a piece of steel? (1) Conduct various inspections on raw materials. Raw materials generally refer to strip steel coils, welding wires, fluxes, etc. Before putting into use, they must go through strict physical and chemical tests to ensure quality. (2) The head-to-tail butt joint of strip steel adopts single-wire or double-wire submerged arc welding, and automatic submerged arc welding is used for repair welding after being rolled into steel pipes. (3) Carry out process treatment. Before forming, the required steel materials are leveled, trimmed, planed, surface cleaned, transported, and pre-bent. (4) Electric contact pressure gauges are used to control the pressure of the cylinders on both sides of the conveyor to ensure the smooth conveying of the strip. (5) Adopt external control or internal control roll forming. (6) The weld gap control device is used to ensure that the weld gap meets the welding requirements and that the pipe diam...

Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is a low-carbon structural steel or low-alloy structural steel strip rolled into a tube blank at a certain helical angle (called a forming angle), also known as a spiral tube or a spiral body. The outer diameter of the spiral tube is about 30 nanometers, the inner diameter is about 10 nanometers, and the pitch between adjacent spirals is about 11 nanometers. What are the methods for identifying whether the quality of large-diameter spiral welded pipes is up to standard? 1. Inspection by physical method: physical inspection method is a method of measuring or inspecting by using some physical phenomena. 2. Strength test of the pressure vessel: In addition to the tightness test, the pressure vessel also needs to undergo a strength test. Commonly there are two kinds of hydrostatic test and air pressure test. They both inspect the tightness of welds in vessels and pipes operating under pressure. The air pressure test is mor...