The price of pig iron market rose by - yuan this week, and the transaction was fair. With the increase of coke price, the cost of ductile iron in Shanxi, Liaoning, Shandong and other regions has increased. In addition, with the gradual release of downstream demand, the inventory of iron plants is not large, and iron plants have successively raised their prices. There are few iron foundries in Shandong, Jiangsu,TevantT2 copper bar, Hebei and Shanxi, and the inventory remains low. As the coke price rises and the cost increases the price of iron foundries rises again.In terms of steel billets: at :, some steel billets in Changli were reduced by , and the current carbon square billets were delivered with tax of yuan. After the th National Congress of the Communist of China, the market had doubts about the uncertainty of environmental production restriction and was still waiting for a clearer direction. Therefore, it can be seen that at this stage, there was no unilateral market for either futures or cash, and there was no definite pattern of ups and downs. According to the monitoring data of Lange Iron and Steel s cloud business platform, as of the time of publication, Tianjin Youwelded Line: the steel mill reported: Rongcheng # yuan/ton, B yuan/ton; Jiujiang # - # to Tianjin yuan/ton; The arrival price of Xinji Aosen # is yuan/ton and that of B steel is yuan/ton; Jiyuan # yuan/ton, B steel yuan/ton; Fulen # yuan/ton; Weigang # yuan/ton,Tevant304 stainless steel plate, B steel yuan/ton.Tevant,Corrosion caused by water with high chloride ion content.Copper tube is a kind of nonferrous metal tube, which is pressed and drawn seamless tube. The copper pipe has good thermal conductivity, and is solid and corrosion resistant. It will not crack when compared with the ambient temperature, so it becomes the first choice for modern contractors to install the water pipe, heat supply pipe and refrigeration pipe in all residential commercial houses.Lezhe,It has excellent conductivity, thermal conductivity, ductility and corrosion resistance.If you want to make the copper surface become bright again, you can polish it with copper point solution. It can not only make the copper surface brighter, but also quickly remove the rust and oxide layer on the copper surface to restore the luster of the copper itself.The simplest way is to use copper cleaner. Brass, red copper, etc. can be used. Oil stains, fingerprints,Tevant6082 aluminum bar, oxide layers, etc. on the surface can be cleaned with copper cleaner first.

This week (-, the market price of red copper bar rose, and the transaction was not ideal. On the bidding day of Shagang last weekend, the price was stable to support the market, and the rising of billets at the weekend drove the market up in a wave, and the price of variety wire rods also rose by yuan at the weekend. However, it was reported that the deal was very poor, which led to the price being s table for the next two days. Until Wednesday, due to the negative outlook on the future market and the reduction of steel billets in the afternoon spiral diving, the market lowered the price. Market price changes, Xinji rose yuan on the rd; For the future market, the off-season is coming, the demand is weakening, and the market wait-and-see mood is getting stronger. But when winter comes, the environmental protection inspection is becoming more and more strict, which supports the market. It is expected that the price ofety wire rod will be adjusted in a weak way in the short term.As the copper pipe is easy to process and connect, it can save materials and total cost, stability and reliability, and can save maintenance during installation.[] Welding process of copper pipe Clean the end and seven ports of steel pipe with steel wool. Do not use abrasive cloth or abrasive paper to clean, because it will affect the clean interface and result in poor welding effect.reformThe production method of soft copper tube is basically the same as that of hard copper tube, that is, the annealing process is added compared with the hard copper tube. Annealing of copper tubes means that they are calcined in a high temperature furnace to change the arrangement of the elements in the copper tubes. However, after annealing, which makes it easier to bend. The copper tubes produced in this way are called soft copper tubes.At the opening this morning, the market price of Zhengzhou copper bar was basically stable. According to the monitoring data of the Lange cloud business platform, the current market price of * mm Linyi copper bar was yuan (ton price, the same below), the * mm copper bar was yuan, and the * mm copper bar Henan copper bar was yuan.Remove the flame. If the filler metal does not melt, continue to heat the joint and try again. The melted filler metal is sucked into the casing port according to the capillary effect until a complete filler metal ring appears on the casing port. Remove the flame Pay special attention not to let the flame directly contact the filler metal. It should be the heat at the joint that melts the filler metal. In order to clean the copper pipe, the welding flux must have a degree of corrosivity, and shall be cleaned after brazing. The so-called & quot; self-cleaning& quot; fluxes are generally not recommended because of their corrosivity.

The blowpipe shall be perpendicular to the lead pipe during welding, and the flame shall be moved continuously to prevent local overheating and the flux from carbonizing before filler metal is added.Quality management,It can be wrapped with moisture-proof paper for moisture-proof protection. It can also prevent oxidation to a certain extent. If cracks or serious corrosion are found, they must be isolated.Brass tube Soft copper tube is called hose, and the tube is used to replace the hard one, so soft copper is widely used. Besides being in a straight line, you can also have coils and coils in the form of long advantages. When used at the connection point is long, so as to avoid leakage of copper tube brass welding. Soft copper tube requires local bending of air conditioner refrigerator, and mechanical oil tube.pper tube Copper tube is easy to heat because of its light weight, and it can also be used normally at low temperatures.So far as the storage method of copper materials is concerned, we should properly keep the copper products we buy, extend the service life of copper and ensure its performance to avoid unnecessary losses.Tevant,Four of the five major application fields of copper plate, copper bar and copper pipe: copper is used as various pipes, pipe fittings and decorative devices in the construction industry.Later, Mexican scientists also found that copper has a . Recently, British researchers found that copper has a strong bactericidal effect. It is believed that in the near future, copper will make great contributions to improving human health. Copper plate T is named after its purple color. It is not necessarily pure copper, sometimes it also involves a few deoxidizing elements or other elements to improve raw materials and s, so it is also included in copper alloys. The processed materials of Chinese cor plate can be divided into four categories according to the composition: ordinary copper plate (T, T, T, T, oxygen free copper plate (TU, TU and high-purity, vacuum oxygen free copper), deoxidized copper plate (TUP, TUMn), and special copper plate (arsenic copper, tellurium copper, silver copper) with a few alloy elements added. The conductivity and thermal conductivity of copper plate are second only to silver, and are widely used to manufacture conductive and thermal conductive devices. The red copper belt has outstanding corrosion resistance in the atmosphere, sea water, some non oxidizing acids, alkalis, salt solutions and a variety of organic acids (aic acid, and is used in the chemical industry. In addition, the output value of copper plate exceeded that of other copper alloys.Later, Mexican scientists also found that copper has a . Recently, British researchers found that copper has a strong bactericidal effect. It is believed that in the near future, copper will make great contributions to improving human health. Copper plate T is named after its purple color. It is not necessarily pure copper sometimes it also involves a few deoxidizing elements or other elements to improve raw materials and s, T so it is also included in copper alloys. The processed materials of Chinese cor plate can be divided into four categories according to the composition: ordinary copper plate (T, T, T, oxygen free copper plate (TU, TU and high-purity, vacuum oxygen free copper), deoxidized copper plate (TUP, and special copper plate (arsenic copper tellurium copper, silver copper) with a few alloy elements added. The conductivity and thermal conductivity of copper plate are second only to silver, and are widely used to manufacture conductive and thermal conductive devices. The red copper belt has outstanding corrosion resistance in the atmosphere, sea water, some non oxidizing acids, alkalis, salt solutions and a variety of organic acids (aic acid, citric acid), and is used in the chemical industry. In addition, the red copper plate has outstanding weldability and can be made into various semi products and products through cold and thermoplastic processing. In the s, the output value of copper plate exceeded that of other copper alloys.