The hard copper tube is not artificially treated after being drawn or extruded， the organizational form in the copper tube is full. This kind of copper tube is more likely to crack and is not suitable for bending. Therefore， the hard copper tube is generally straight.
중점 분야의 홍동 재고는 지속적으로 상승하고 있지만 전반적인 압력은 크지 않다.현재 주요 배송센터의 전체 재고 상황을 보면 Wu;안，토 머 스 크동봉， 강음과 락종， 재고수준은 상대적으로 온화하고 시장압력은 상대적으로 작다.Wu 에서수치가 보여준데 따르면 월 일까지 오시 중후판의 총창고보유량，an은 만 톤에 육박하여 매주 톤이 증가한다.월 하순에는 연내에 만t이 떨어져 설 이후 최고 수준보다 만t이 떨어지고 주 연속 상승했다.ov로 말하자면수량은 상대적으로 온화한 수준을 유지한다고 말해야 한다.
토 머 스 크그래서 카자흐스탄에 가는 일부 ah 환열기의 산소 설비에 자주 사용된다.
After the pipe is cleaned， the welding flux and flux shall be immediately applied to the interface and the bayonet clearance. Sufficient flux shall be thinly coated on the mating surface and assembled immediately， so that dust and dirt will not pollute the capillary gap.
엘 바 그 레퇴화 적동판의 실온 인장 강도는 ~kgf/mm이고 신장률은 ~%이며 부씨경도(HB)는 ~이다
For small diameter pipes， when using filler metal， the length of filler metal is allowed to be equal to the diameter of the pipe， which is enough to fill the weld crater. One of the five major application fields of red coppr plate T， red copper bar and red copper tube: copper is the most widely used and used in the electrical and electronic industries， accounting for more than half of the total consumption. Used for various cables and wires， motors and transformers， switches and printed circuit boards; In the manufacture of machinery and transport vehicles， it is used to manufacture industrial valves and accessories， instruments， sliding bearings， molds， heat exchangers， pumps， etc.
If the corrosion on the copper surface is found to be slight， it can be erased with linen copper wire， but it is not recommended to apply oil for preservation.
Advantages of red copper tube Durability: copper has stable chemical properties， integrating cold resistance， heat resistance， pressure resistance，토 머 스 크310s 스테인리스강 원강， corrosion resistance and fire resistance， and can be used in different environments for a long time.
If the copper tube is blocked during use， it is also very important to dredge it in time.
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， Henan， 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， Hebei and Shanxi， and the inventory remains low. As the coke price rises and the cost increases， the price of iron foundries rises again.
자원.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 Steels 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.
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.
금주(-， 홍동봉의 시장가격이 상승하여 거래가 좋지 않다.지난 주말 사강의 입찰일， 가격이 안정되어 시장을 지탱하였고， 주말에는 강판의 상승으로 시장이 일파만파 상승하였으며， 현지의 자원이 부족하여 제철소;정액，정액
입찰 공 고 를 하 다.또한 쉽게 부식되지 않으며 다양한 환경에 적응할 수 있습니다.그것은 저온과 고온에서 정상적으로 사용할 수 있기 때문에 다른 곳에서는 여러 번 동관을 선택해야 한다.
The water quality at the place where the copper pipe is required to be installed shall be studied， and the appropriate water quality and water flow shall be selected for pipe distribution to prevent the root cause.
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 "self-cleaning" fluxes are generally not recommended because of their corrosivity.
토 머 스 크In the first ten days of May， the overall order receiving quantity of Tianjin Hebei Henan Plate Plant was not ideal. According to the monitoring data， the overall order intake of medium and heavy plate mills in Tianjin Hebei Henan region in the first ten days of May remained stable and weak. Due to the weak market shock，토 머 스 크구리 가방 알루미늄 실봉， the overall order intake of the spot steel market was relatively weak. The total quantity of orders received in the first ten days of May is only about tons， while at the end of April， the total quantity of post settlement agreements of main steel plants can exceed tons.
쌓을 때는 합리적으로 쌓고 우선적으로 놓아야 한다.
The 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， the copper tubes will become soft