Welded steel pipe is a steel pipe made of steel plate or steel strip after being crimped and welded. Welded steel pipes have simple production process, high production efficiency, many varieties and specifications, and less equipment investment, but the general strength is lower than that of seamless steel pipes.
Jan 22, 2022 read moreSteel pipes are not only used for conveying fluids and powdered solids, exchanging thermal energy, making machine parts and containers, but also an economical steel.
Jan 18, 2022 read moreThe ultrasonic thickness measurement method adopts high-performance, low-power microprocessor technology, and based on the principle of ultrasonic measurement, it can measure the thickness of seamless steel pipes, and can measure the sound speed of materials.
Jan 17, 2022 read moreThrough in-depth analysis, it was found that the quality of seamless steel pipes was affected because some cold-drawn seamless steel pipe manufacturing enterprises did not pay attention to product quality and blindly reduced product costs. For example, reducing the frequency of cold drawing or quenching, which will cause the rupture of the product, is also an ineffective way with great adverse effects, which should be minimized.
Jan 11, 2022 read moreThe biggest advantage of p22 alloy steel pipe is that it can be recycled 100%, which is in line with the national strategy of environmental protection, energy saving and resource saving. The national policy encourages the expansion of the application field of high pressure alloy pipe.
Jan 03, 2022 read morePlastic-coated steel pipes are also known as film-coated composite steel pipes, upper and lower epoxy resin steel pipes, and plastic-coated steel pipes. Because of their low fluid resistance, strong corrosion resistance, long service life, and good food-grade hygiene performance, they are more widely used in Drainage, fire pipeline and other fields.
Dec 16, 2021 read moreMain characteristics: the creep limit of this steel is very close to the permanent strength value, and it has high plasticity under the condition of permanent stretching; the steel has good manufacturability and weldability, but it needs to be preheated to 300 ℃ before welding, and after welding Stress relief is required. It is a widely used steel grade for high pressure, ultra-high pressure and subcritical power plant boiler superheaters, headers and main steam conduits. At 580 ℃, it still has high thermal strength and oxidation resistance, and has high permanent plasticity. The production process is simple and the welding performance is good, but it is more sensitive to the normalizing cooling rate. Long-term use at 580°C will produce pearlite spheroidization. The biggest advantage is that it can be recycled 100%, which is in line with the national strategy of environmental protection, energy saving and resource saving. The domestic policy encourages the expansion of the application field of 12Cr1MoV alloy steel pipe. At present, the consumption of 12Cr1MoV alloy steel pipe in my country accounts for only half of the total amount of steel in developed countries. The expansion of the use field of 12Cr1MoV alloy steel pipe provides a broader space for the development of the industry. According to the research of 12Cr1MoV alloy steel pipe branch of China Special Steel Association, the demand for high-pressure 12Cr1MoV alloy steel pipe long products in my country will increase by an average of 10-12% in the future.
Dec 01, 2021 read moreSpiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often warmly extruded, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multiple rollers, the strip is gradually rolled up to form a circular tube blank with an opening gap. 3mm, and make both ends of the welding joint flush.
Nov 02, 2021 read moreSeamless steel pipe is a long strip of steel with a hollow section and no joints around it. The seamless steel pipe has a hollow section and can be used as a pipeline for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, seamless steel pipe is lighter in weight when the bending and torsional strength is the same. , bicycle racks and steel scaffolding used in construction, etc.
Sep 22, 2021 read moreRound steel is divided into hot rolled, forged and cold drawn. The size of hot rolled round bar is 5.5-250 mm. Among them: 5.5-25 mm small round bars are mostly supplied as straight steel tendons, and are often used as steel bars, bolts and various mechanical parts; 25 mm round bars are mainly used for the manufacture of mechanical parts, seamless steel pipe billets, etc.
Aug 19, 2021 read moreCommon media for pickling of seamless steel pipes Sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid. Be sure to add a pickling corrosion inhibitor during pickling to prevent acid corrosion of metals.
Nov 18, 2020 read moreThe uneven wall thickness of the hot-rolled pipe is the key to the hot-rolled one-time hole. The uneven wall thickness of the broken hole of the capillary is likely to be caused by the following 3 factors;
Feb 12, 2020 read moreContinental Steel Co.,Ltd(CSC) is a pioneering manufacturer, stockist, and supplier of steel pipe products.