News of 27SiMn alloy steel pipe in Bengbu
The market mentality of 15CrMo alloy tube is relatively fragile, and will continue to be weak in the short term. At the same time, under the condition of maintaining low coke stock and low purchase price, the sales pressure of coke enterprises is doubled, and coke enterprises have higher coke inventory. Considering all the above factors, it is difficult to improve the market situation of 15CrMo alloy pipe. The overall operation mood was lowered again. In the medium and heavy plate market, the lock price of steel mills in Wu'an area was reduced to 2430 yuan. At the end of the day, the price of steel mills to their agreement holders was reduced to 2400 yuan, and the lowest spot price was also explored as low as 2460 yuan. However, the current low-cost resources have not been circulated to the spot market, which may form a certain support for the prices in the past two days. However, the market price focus will still be lower in the later period, and the price of Wu'an area will be lower It will also spread rapidly to the surrounding cities and southern cities. At the same time, with the reduction of steel mill prices, the quantity of resources delivered in the circulation market has increased, and the overall inventory has increased. Meanwhile, the bearish expectation of merchants also makes the market reduce price ahead of time. In the short term, the medium and low pressure boiler tubes will continue to decline rapidly. The domestic scrap market is weak, and the trade is light. In today's futures market, snail opened low and went low. The spot market quotation was mostly lowered. Ore and pig iron were also weakening. In this case, the domestic scrap steel market began to explore again. According to last week, although the overall steel market, there was no rise in the overall market.
Bengbu 27SiMn alloy steel pipe in stock
| Alloy steel|| 15crmoG|| 133*30|| national standard|| of large number|| of large number|| Electronic discussion|| ***|
| Alloy steel|| 15crmoG|| 140*10|| national standard|| of large number|| of large number|| Electronic discussion|| ***|
| Alloy steel|| 15crmoG|| 140*14|| national standard|| of large number|| of large number|| Electronic discussion|| ***|
| The high-pressure alloy pipe|| 12cr1moV|| 420*28|| national standard|| of large number|| of large number|| Electronic discussion|| ***|
| The high-pressure alloy pipe|| 12cr1moV|| 420*38|| national standard|| of large number|| of large number|| Electronic discussion|| ***|
| The high-pressure alloy pipe|| 12cr1moV|| 420*44|| national standard|| of large number|| of large number|| Electronic discussion|| ***|
Knowledge of 27SiMn alloy steel pipe in Bengbu
6. There are two reasons why the fake and inferior steel pipe has no metallic luster and is light red or similar to pig iron color. 2. Its billet is adobe. 2. The rolling temperature of fake and inferior products is not standard, and their steel temperature is measured by visual inspection, so it is impossible to roll according to the specified austenite area, and the properties of the steel can not reach the standard.
7. The transverse reinforcement of fake and inferior steel pipe is thin and low, and the phenomenon of insufficient filling often occurs. The reason is that in order to achieve large negative tolerance, the reduction of the first few passes of the finished product is too large, the iron mold is too small, and the pass is not fully filled.
8. The cross section of the fake and inferior steel pipe is oval. The reason is that in order to save materials, the reduction of the first two passes of the finished roller is too large, and the strength of this kind of rebar is greatly reduced, and it does not conform to the standard of the external dimension of the rebar.
9. The composition of high-quality steel is uniform, the tonnage of the cold shear is high, and the end face of the cutting head is smooth and neat. However, due to the poor material quality of the fake and inferior materials, the end face of the cutting head often has the phenomenon of falling off, that is, uneven and without metallic luster. And because of the fake and inferior products manufacturers cut less, head and tail will appear big ears.
10. The fake and inferior steel pipe material contains many impurities, the density of steel is too small, and the size is out of tolerance seriously, so it can be weighed and checked without vernier caliper. For example, for rebar 20, the national standard stipulates that the maximum negative tolerance is 5%. When the scale is 9m, the theoretical weight of a single bar is 120kg, and its minimum weight should be: 120x (L-5%) = 114kg. If the actual weight of a single bar is smaller than 114kg, it is fake and inferior steel. The reason is that its negative tolerance exceeds 5%. Generally speaking, the whole phase weighing effect will be better, mainly considering the cumulative error and probability theory.