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ASTM A519- specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required.
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La tubería en la carcasa de petróleo es un oleoducto que transporta petróleo crudo y gas natural des
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La tubería en la carcasa de petróleo es un oleoducto que transporta petróleo crudo y gas natural desde la capa de petróleo y gas a la superficie después de que se completa la perforación.
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La tubería en la carcasa de petróleo es un oleoducto que transporta petróleo crudo y gas natural desde la capa de petróleo y gas a la superficie después de que se completa la perforación.
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ASTM A213 T5 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.
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Some steel companies lowered the purchase price of scrap steel, ranging from 20-30 yuan (ton price, the same below). As a result, the scrap market from North China to East China has declined. At this stage, most traders did not participate.
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For the next week's market, remind everyone to pay attention to the following aspects:
First, the demand factor. According to the data of the Xiben Shinkansen trading platform, although the high temperature weather has obviously eased this week, the demand for terminal demand in Shanghai continues to decline, factors such as the reduction of iron ore and billet prices and the fall of steel futures have aggravated the market's wait-and-see mood. In the process of rising prices in the early period, the site has generally increased the inventory replenishment. The market demand has been overdrawn to a certain extent. At the same time, the price decline has also reduced the enthusiasm of the site replenishment. The terminal demand for steel pipes will still be difficult to improve next week.
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Proceso de producción de tubos de acero en espiral: Es un tubo de acero con costura en espiral soldado mediante soldadura automática de arco sumergido de doble cara de doble alambre con bobinas de acero en tiras como materia prima, a menudo extruidas y formadas.
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The arrival of each finished product resource is relatively limited, and the main resources of the steel pipe circulation link still appear to be broken, and the rise of the futures market has obvious supporting effect on the stability of the spot market sentiment, coupled with the stable growth policy, the bottom steel market, the transaction status of the main finished products Some things have changed, and the overall price has remained strong and shocked in the short term.
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The price of the large-diameter high-pressure seamless pipe for pressure vessels GB/T 9948-2013 is not affected by the city, and it stands proudly.
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Tubo de acero compuesto de acero inoxidable
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Tubo de acero compuesto de acero inoxidable
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Steel pipe of these factors must not be ignored when the preform is heated in the low temperature section, it will affect production quality. The heating period of the low temperature section is often a critical period for heating some special alloy steels, because the steel has low heat conduction performance and low plasticity, and if the heating rate is too fast, heating cracks or even fractures may occur.
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Tubo de acero sin costura
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Go out of the country and go out of the world! Tianjin seamless steel pipe products were unveiled at the Oman International Oil and Gas Exhibition. The 2019 Oman International Oil and Gas Exhibition was held recently in Muscat, the capital of Oman. Tianjin Pipe Group successfully participated in the exhibition, further consolidating and enhancing the popularity and influence of the TPCO brand in the international market.
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1. Where is the root cause of the difficulties in the steel industry and how long can it last?
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Tangshan Iron and Steel Group, a subsidiary of Hebei Iron and Steel Group, recently reached an agreement with Veolia, which will be responsible for the construction and operation of water treatment and circulating water projects for two industrial projects under Tangshan. The contract period is 30 years and the cumulative income of the two projects is 390 million euros.
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Los tubos de acero soldados en espiral se refieren a los tubos de acero con costuras en la superficie que están soldadas por tiras de acero o placas de acero que se doblan en formas redondas o cuadradas.
