용접할 때 드라이어는 납관에 수직해야 하고 화염은 련속 이동하여 국부적인 과열과 용접제가 충전금속을 첨가하기전에 탄화되는것을 방지해야 한다.
Although the opening continued the weak trend the intraday transactions improved， and the prices of some copper bar manufacturers rose. From the specific situation， although the manufacturer feedback that the shipment is average， the mentality is relatively calm， the market inventory is not much and the manufacturer is not willing to significantly reduce the price. In terms of the market， the transaction of strip steel is better than other steel varieties， the overall demand for strip steel remains in a good state.
크 레 타외부 포장은 표면의 긁힘， 균열 및 기타 손상을 방지할 수 있습니다.
정저우 동봉 시장의 가격은 기본적으로 안정되어 출하 상황이 좋지 않다.벽돌관리방면: 오늘 산동성 로력관벽돌은 원 약간 하락했는데 현재 주류출고가격은 ~원이다.파이프 공장 측: 린이 파이프 공장 고정 가격 일주일.안정된 시장 심리 상태로 열연 무봉강관의 출고 가격은 현재 ~위안 사이이다.시장: 비수기가 다가옴에 따라 무역상들은 보통 고가로 물건을 발송한다.재고 보충은 주로 기존 재고를 유지하는 것으로 큰 재고 보충 계획은 없다.수요 부진으로 정저우 동봉 시장 가격이 안정적으로 하락할 것으로 예상된다.
마 고Generally， the elongation is ~%， and the Brinell hardness (HB) is ~
In view of the current overall price difference， the local copper bar price continued to rise at a high level today， while the regions outside East China did not show an obvious follow-up trend， and the local price still has the advantage of price difference with the Northeast and Central China regions. The local inventory pressure will be further reduced due to the small volume of local follow-up goods under the influence of production restriction， and the price support of copper bar is still strong. However， at present， domestic real estate control is still being tightened. The markets expectation of future demand is weakening， the market price of copper bars in Shenyang is stable and the shipment is poor.
적동 재고는 지속적인 하락세를 끝낼 수 있다.철강 기업의 생산 제한 강도가 높아지고 수요 압력이 커짐에 따라 철광석 항구의 재고의 지속적인 감소는 끝날 수 있다.또한 **의 최신 통계에 따르면 제철소의 철광석 수입 가용일수는 일로 국경절 전보다 하루 줄어 사상 최고치를 기록했다.제철소는 현재 철광석 재고가 기본적으로 생산 요구를 만족시킨다고 밝혔다.향후 감산 및년 월말까지 산동성은 이미 만톤의 생철과 만톤의 조강의 생산능력과잉문제를 해결했으며 모든 생산능력제거설비는 이미 페쇄되고 퇴출되였다.월 일， 한단시발전개혁위원회는"년 한단시 과잉철강생산능력제거계획"을 발표했다.통계수치가 보여준데 따르면 년 한단의 제철능력은 만톤이고 제강능력은 만톤이다.
동관을 설치해야 하는 곳의 수질을 검토하고 적절한 수질과 물줄기를 골라 배관을 분배해 근본 원인을 방지해야 한다.
The copper tube shall be heated and welded first，크 레 타321 스테인리스강 권재， and then the joint shall be heated until the heated part turns dark red. At this time， when the filler metal contacts the tube， the filler metal shall melt.
품질 이 대단 하 다.It is said that due to the optimistic future and tight resources， some iron plants do not take orders temporarily. The steel mills in Liaoning have increased their enthusiasm for purchasing steel. The iron mills have delivered well， and the price of raw materials has risen， so the iron price has risen. The iron mills have a high enthusiasm for producing steel， so there is not much cast iron resources， and the price has risen. A few steel mills in Tangshan began to purchase a small amount of steel for smelting， and most steel mills are still on the lookout for inquiry. Under the background of increasing cost and gradual release of demand，크 레 타40Mn2 합금 강판， the pig iron market is performing well and is expected to continue to operate strongly in the short term.
Disadvantages 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.
To sum up， due to the influence of factors such as the current spot market price is much higher than the expected winter storage price of merchants， the gradual emergence of supply and demand pressure， and the weakness of raw material support， among which the contraction of market demand has a greater impact. Therefore， the author believes that in the short term， the spot building materials do not have the possibility to rise significantly， and the price of building materials may mainly operate in shock， but with the shrinking demand， the supply and demand pressure becomes prominent， However， considering the influence of winter storage and other factors， it is still possible for merchants to lower the spot price in November.
It is mainly used to manufacture electrical devices such as generators， buses， cables， switchgear， transformers， and thermal conductive devices such as flat plate collectors for heat exchangers， pipes， and solar heating equipment. Common copper alloys are divided into three categories: brass， bronze and white copper. Pure copper plate is a purplish red metal， commonly known as "copper plate"， "red copper plate" or "red copper plate".
시장 부The material of the water separator is the same， the expansion coefficient is the same， and the connection with the water separator is not easy to leak. Scope of application: As the copper pipe is more expensive than the plastic pipe， the cost of the floor heating system is higher.
ased copper tube is made of oxygen free copper rod which has good processing characteristics and can be punched， bent and other process design requirements. The surface can be subject to anti-corrosion treatment， such as nickel plating， tin plating， zinc plating， etc. The surface anti-corrosion can reach hours of fog test. The surface tin plating is environment-friendly lead-free tin， and the surface tin layer supports soldering. T degreased copper tube is mainly used for communication cabinet， transformer， charging pile， box type substation and other electrical facilities. The copper bar is harder than the plastic pipe and has the degree of common metal (the strength of the cold drawn degreased copper pipe is equivalent to that of the steel pipe with the same wall thickness). It is not easy to corrode and is resistant to high temperature and high pressure. It can be used in various applications. The main material of copper bar is copper. The melting point of copper is as high as ℃ and the temperature of hot water can be ignored for degreased copper pipe， few people ask about the water supply pipe of the house. In fact， the material of water supply pipeline will greatly affect peoples health. T copper tube has strong capacity. Escherichia coli in the water supply will not continue to breed in the degreased copper tube and more than % of the water will disappear after entering the degreased copper tube for hours. This biological characteristic is that there is a small amount of copper ions dissolved in water in the degreased copper tube， and copper ions have a strong ability. Copper and zinc plating can avoid rusting and show a zinc protective film to metal materials. The conductive metal material repair and color enhancement care agent I can generate the thickness of the metal material epoxy protection layer and the pipelincathodic protection layer， which can resist extreme weather and is suitable for the long-term surface of metal materials. The actual effect of salt and water corrosion resistance is good. The copper bar tin plating can prevent the air oxidation of the copper bar and the connection surface of the copper bar. In addition， the melting of metal tin and copper will produce aluminum alloy， which will improve the adhesion of copper strip coating. In addition， the conductivity of metal tin is good. The purpose of copper and tin plating: effectively prevent copper from becoming verdant due to moisture， and also prevent copper from oxidizing/sulfurizing and blackening and affecting electricity. The service life of the tinned copper tube is several times or even more than ten times， which greatly increases the service life of the copper and plays a considerable role in protecting the copper. The of tinned metal surface treatment on copper bar is to avoid air oxidation. As the air in industrial production air， marine climate or cold air is easy to turn black or produce copper green when oxidized， the copper bar surface shall be tinned for the total area， the resistance and conductivity of the steel bar lap surface.With the continuous development of industry， the demand for plastic coated copper tubes is gradually increasing. Then how to apply wood grain paint on alloy pipes. Wood like paint is a kind of wood like paint. It is used for spraying plastic coated copper pipe and its process flow. Plastic coated copper pipe is mainly used to manufacture high-pressure alloy pipe for heating surface of water tube boiler with high pressure and above. In the morning market， the mainstream spot price quoted by Lianzhong was - yuan/ton， and the tax inclusive base price quoted by Hongwang and Chengde was - yuan/ton. On a month on month basis， part of the producing areas recalled yuan， and the mainstream tax inclusive base price in the market changed from strongeak in the - plastic coated copper pipe supply and demand relationship. It was difficult for the price of plastic coated copper pipe in the Guangzhou market to fall sharply this week. Second， plastic coated copper tubes are widely used in superheaters， headers and main steam ducts of domestic HP， large diameter pipes are mainly used as headers and main steam pipes with steam parameters below ℃.
철광석 선물 주력은 에서 로 마감했다. 이날 종가는 ***， **， 결제가 ， 거래량 ， 보유량 를 포함해 전 거래일과 같았다.일내 거래g 거래량은 전 거래일보다 만 명，크 레 타6082 알루미늄 바， 보유량은 전 거래일보다 만 명 줄었다.일 연속 하향 조정 후 오늘 장중 하단에서 반등하였으나， 그 후 다시 반등하여 보합으로 마감하였다.
크 레 타나는 없다;나는 동관을 어떻게 보존해야 할지 모르겠다.
용접할 때는 모세관 간격을 채우기 위해 충분한 필러 금속을 추가하기만 하면 됩니다.너무 많은 채우기 금속은 조인트 하단에만 구를 형성하거나 파이프로 유입됩니다.
The room temperature tensile strength of the annealed red copper sheet is ~ kgf/mm， the elongation is ~%， and the Brinell hardness (HB) is ~
