博文

目前显示的是 四月, 2022的博文

API5L Line Pipe Specification

  Process performance: 1. Flattening test Electric welded steel pipe, continuous furnace welded steel pipe and laser welded steel pipe should be flattened test. Whether it is necessary for seamless steel pipe Flattening test, not mentioned in the standard. 2. Bending test For steel pipes with a size of not more than 48.3mm, each batch of 25 tons or less than 25 tons is a batch, and for steel pipes with a size of 60.3mm Each batch of 50 tons or less of 50 tons is a batch of steel pipes, and one steel pipe is selected from each batch to take a full-section sample of appropriate length for bending test. Defect 1. The steel pipe shall not have a pit with a depth of more than 6.4mm. The depth of the pit shall refer to the lowest point of the depression and the extension of the original outline of the steel pipe. distance between points. The length of the pit in any direction should not exceed half the diameter of the steel pipe. 2. All cracks, seepage and leakage shall be considered as ...

European inflation "explosion", steel rose by 250 %, what is going on?

  Affected by repeated global epidemics, geopolitical conflicts, and supply chain imbalances, recently, Eurostat estimated: In February, the euro zone PPI soared 31.4% year-on-year, compared with the expected 31.6%; the EU PPI soared 31.1% year-on-year. Soaring PPI, who is the driving force? The full name of PPI: Producer Price Index is an index that measures the trend and degree of change in the ex-factory price of industrial products. It is an important economic indicator that reflects the price changes in the production field in a certain period. According to statistics, the main driver of the soaring PPI in Europe is actually the rising prices of energy commodities. For example, in the euro area's February PPI, the light energy sector increased by 87.2% year-on-year, and the industry-wide commodity price excluding energy increased by 12.2% year-on-year. In the EU's February PPI, the energy sector rose by 83.6% year-on-year, and industry-wide commodity prices excluding energ...