On April 26th, two sets of CT80 steel grades with a wall thickness of 3.4 mm and a length of 3,800 meters and a diameter of 38.1 millimeters and 44.45 millimeters were produced by Baoji Petroleum Steel Pipe Co., Ltd. from Baoji to Russia. This is the first time that China's coiled tubing products with independent intellectual property rights have entered this region. As a clean, efficient, safe and practical new technology, the coiled tubing technology not only reduces construction costs and reduces damage to the environment, but it has also become a new way to improve oil and gas exploration and development benefits by using drilling methods and methods, in drilling and logging. It has unique advantages and broad application prospects, such as downhole operations. From 2005, Baoji Steel Pipe Co., Ltd. undertook the research of domestic coiled tubing and its testing equipment in accordance with the national “863†plan and the planning requirements for major scientific and technological projects of the Group, and with the support of the relevant departments of the state and the group companies, overcame the foreign technology monopoly and Due to the difficulties caused by the blockade, in June 2009, China successfully developed the CT80 steel-grade, 7,600-meter-long coiled tubing in China, and built the first coiled tubing production line in Asia with advanced international standards. In 2010, Baoji Steel Pipe Co., Ltd. redoubled its efforts. With excellent product quality and a good corporate image, it successfully obtained overseas certification for coiled tubing. It has laid a solid foundation for this high-tech and high-value-added product independently developed to enter the international market steadily. . In June of this year, Baoji Steel Pipe Co., Ltd. will send a professional and technical team to Russia to participate in the two coiled coiled tubing trials for export and conduct technical exchanges with Russia in accordance with the relevant contract.
A carbon steel plate has usually been considered as the steel that does not contain much alloy steel elements, also named as mild steel. Generally, elements are C, Mn, P, S, Si, besides these, there are no minimum limits for elements of Al, Cr, Ni, Mo, V, etc.
Carbon steel plates are available in different grades depending on the carbon content and strength.
As the content of Carbon increase, the steel plate hardness increases.
Low carbon steel plate: For carbon content 0.06% to 0.25%, also we call it mild steel plate.
Medium carbon steel plate: C content from 0.25% to 0.55%.
High carbon steel plate: 0.55% to 1.0%, also called hard steel plate.
Low carbon steel is the most common form, and it's very malleable and ductile. Medium carbon steel balances ductility as well as strength for excellent wear resistance. High carbon steel is exceptionally strong, while ultra-high carbon steel can be tempered to even greater hardness but no malleability.
As the percentage of carbon gets larger, steel can become harder and stronger through heat-treating. Carbon steel is usually heated to change the mechanical properties of steel, usually ductility, hardness, strength, and resistance of impact. Increasing the carbon content of carbon steel makes it harder and stronger, but reduces the steel`s ability to be welded, making it more brittle.
Carbon steel plate is most often used for structural purposes such as buildings, yet it has the flexibility to be worked into ornate designs. Low carbon steel sheet (wrought iron) is typically used for fences, chain links, gates, and railings. Structural steel (medium carbon steel) is used in cars, refrigerators, washing machines, buildings, and bridges. The steel sheets are normally made up of medium carbon steel.
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