In the morning trading today，Sardania6063 aluminum bar， the price of domestic copper bar fell. According to the monitoring data of Lange Steel s cloud business platform， the average price of * mm hot rolled strip in key cities in China is ， down yuan from yesterday. Futures prices fluctuated， and the prices of spot market manufacturers eased slightly today. According to the feedback the market was mainlysee yesterday， which caused the overall transaction blocked， and the mainstream manufacturers prices fell today.
The composite method of three production methods of copper tube is also a high-tech production method for this method. It is a copper material containing impurities. Those copper materials， copper alloys and composite copper materials are put together by electrochemical reaction to produce a nanocrystalline copper material， and then the material is purified to produce copper tube materials.
SardaniaUse qualified copper raw materials for production， try to avoid using the pipe body produced by recycled copper， reduce impurity corrosion， and extend the service life of copper pipe.
Red copper plate has ductility. Pure copper， which is as big as a drop of water， can be pulled up to two kilometers of thin wire or rolled into a transparent foil larger than a bed. The most valuable property of red copper row is that it has a very good conductive ， second onlyver in common metals. But copper is much cheaper than silver， so it has become the & quot; protagonist& quot; of the electrical industry.
Hu qiaobodeThe simplest way is to use copper cleaner. Brass， red copper， bronze， etc. can be used. Oil stains， fingerprints， oxide layers etc. on the surface can be cleaned with copper cleaner first.
Generally， oxygen aylene is used as the gas source and LPG welding tool is used for heating. The torch of the welding tool shall face the joint and then continuously heat the whole joint. This will avoid excessive local heating.
Safe and reliable: copper pipe combines the advantages of metal pipe and non-metal pipe. It is harder than plastic pipes and has the high strength of ordinary metals (the strength of cold drawn copper pipes is equivalent to that of steel pipes with the same waess); It is also easier to bend than ordinary metals， has good toughness and high ductility， and has excellent anti vibration anti impact and anti frost expansion properties.
Do not store too many other products， especially other acid materials and alkali materials， in the warehouse to prevent mutual reaction.
When heating steel pipes， the temperature is slightly higher than when heating copper pipes.
The market opened today. Although the performance of Zitong Pai futures was modest， the overall market has stopped. The market mentality has not changed much sincekend. The price is stable， but some specifications are subject to negotiation， and the negotiation range is about - yuan. The overall rhythm of the market is stable and cold. In the middle of winter， the overall market in Northeast China has entered the traditional off-season， and the overall market has ended with little improvement. All companies are selling goods. The inventory level in Shenyang is very low due to the inventory clearing， and all construction sites have been closed. In addition to the transportation pressure brought by the low temperature， the market was bleak.
assetsSo 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.
Do not store too many other products， especially other acid materials and alkali materials， in the warehouse to prevent mutual reaction.
The hard copper tube is not artificially treated after being drawn or extruded， so that it can be naturally formed. At this time， the hard copper tube is generally straight.
Save materials and total cost， stability and performance， and can save maintenance.
Test methodIn Jiangyin market， the overall inventory of the current circulation link is about tons， slightly lower than the normal level. At the beginning of this week the price gap between Jiangyin prices and those in the north has also been able to correspond to the slightly lower circulation inventory. However， the overall production situation of Nangang from the perspective of the policy port of the steel plant， Hengrun， Dada， etc. is relatively normal， which is a medium normal level， and the recent spot price of Lecong market has a large gap with that of the north.
{} The copper pipe welding can be divided into soft welding and hard welding. The soft welding temperature is lower than ℃， and the hard welding temperature is higher than ℃. Hard welding is usually used for silver， steel， copper and other metals. Its welding points are much stronger than soft welding， and its shear strength is - times that of soft welding.
According to * * new data， in September ， China s imported iron ore * * * broke through the million ton mark， reaching million tons， a record high; From January to September， China s iron ore import increased by % to million tons，Sardaniabrass plate， and the annual import volume is expected to exceed billion tons. However， judging from the shipment of imported ores after the National Day， due to the rapid declinecline in iron ore prices， the iron ore price index once fell below $， which reduced the enthusiasm for the shipment of imported ores. In addition， environmental protection inspection has become stricter，Sardania310s stainless steel seamless pipe， and the supply of some domestic mines has been greatly affected. The current operating rate of domestic mines is percentage points lower than the previous peak， which is likely to decline further in the future.
SardaniaDisadvantages of copper pipe As far as copper pipe is concerned， high production cost and high price are its biggest disadvantages. Compared with other pipe fittings， the cost of copper pipe is much higher， and the connection at the copper pipe interface requires high construction technology level.
Tangshan billets rose sharply last weekend， and some domestic economic data improved， which boosted manufacturers confidence. Today， steel prices generally rose. However， with the approaching meeting and the rainfall in the south caused by the typhoon， the construction progress of the downstream construction site is affected， which is not conducive to the continuous demand. The high spot price transaction today is weak， which is difficult to support the continuous rise of steel prices. It is expected that the building materials market will maintain a volatile trend tomorrow， and some businesses may reduce prices and take goods.
If you want to avoid this kind of situation for a long time， you can choose passivation treatment. In this way， not only is the copper surface serious， it can be cleaned under normal circumstances， but it is not a big problem to keep it in the air for one year or more after ultrasonic treatment and immersion treatment， so this effect is very good.
