China Steel Prices Keep Rising On Daily Basis

Recently we receives more and more enquiries from customers domestic and overseas.For us better understanding the situation.Now let’s look at the below picture of price trend of raw material hot rolled steel.

Clearly,from the above picture,we can see the price rises very very quickly in China market.Actually,not only the steel price,but also aluminum,copper and other nonferrous metals price are all climbing the mountain.

For the situation of rise trend,we list the following reasons.

1.The reform of the supply front reduces the capacity.This is the general trend and China government decision.Many steel mills that is not qualified for the requirement will be closed down.And also the big steel mills will be merged.

2.The relationship of supply and demand. According to the present situation,the social inventory of plates and coils and bars are not enough for the market demand.

3.The steel mills maintenance steel price stable due to the confidence on the future’s steel production.

4.The extensive safety inspection on steel production line.

5.Burning gas to instead of traditional gas cause the production costing increase.

As you are aware that there has been lately a large demand for the steel products,such growing demand has doubtlessly resulted in increased prices.Recently,the price of steel products is still increasing rapidly.However,you may take the advantage of the strengthening market if you place order to us immediately.

Changzhou Dingang Metal Mateial Co.,Ltd

Which has been in the line for many years and is known as one of the leading exporters of metal materials in China since 2002.

Our main products suppliable at present as following:

Galvanized (Zinc Coating) Steel,Galvalume (Alu-zinc Coating) Steel,Pre-painted (Color Coated) Steel,Mirror (Anodized) Aluminum,Color Coated (Pre-painted) Aluminum,Heat Insulating Anti Corrosice Sheet,Corten Steel With Laser Cut For Decoration and so on.

Should any of items be of interest to you,please let us know.We shall be glad to give you our lowest quotations upon receipt of your detailed requirements.

In our trade with merchants of various countries,we always adhere to the principle of equality and mutual benefit.It is our hope to promote,by joint efforts,both trade and friendship to our mutual advantage.

Looking forward to receiving your enquiry soon.

Down Spout used coated aluminum slit coil

One of the most popular applications of color coated Aluminum coil is used for making aluminum alloy downspout and color coated aluminum rain gutter. As you know most people would like to choose color coated aluminum instead of color coated steel because of its high warranty, light density and other advantages.

Do you know the main specifications customers most choose for down spout coated aluminum coil? Normally, the main alloy is AA3105H24, AA3003H24. And two faces of color coated aluminum coil are preferred. The faces are processed by roller painting with polyester (PET) paint and PVDF paint. Top paint thickness is 25-28 um, and bottom paint thickness is 15-18um. The color is durable.

What we mainly supply sizes and colors:

Thickness -0.5, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm etc.

Width -266mm, 285mm, 300mm, 405mm, 448mm etc. or other slit coil width as customer requirement

Color –RAL and thousands of colors for customer choose, color sample can be provided as customer’s color sample in 5 days

Good Mechanical property ensures Dingang color coated Aluminum coil easily be folded, welded, roller forming when processing. Dingang Color coated aluminum coil is domestic and foreign aluminum alloy downspout and rain gutter manufacturer’s ideal raw material.

Changzhou Dingang Metal Material Co., Ltd

Website: www.cnchangsong.com

Professional Manufacturer On Prepainted Aluminum Products

Changzhou Dingang Metal Material Co., Ltd, which is located in Changzhou, Jiangsu,China.Only 200kms from Shanghai. Our company is a market leader in manufacturing Galvanized Steel, Galvalume/Aluzinc Steel, Pre-Painted/Color Coated Steel,Heat Insulated Steel,Corrugated steel,Aluminum Coil and Pre-Painted Aluminum, Mirror Aluminum, Corrugated Aluminum Since 2002.

With regards to the management of process,Dingang runs following the ISO9001:2008 and ISO14001:2004 standards.Further more,the company is audited supplier which was presented by SGS and Made In China,ranking tenth in exporting value in Zhonglou District,Changzhou City in 2010.

Advanced Technology

Dingang's color coating aluminum lines is desinged specially for aluminum coil (not for steel),it is more stable,precise,and the coating layer is more smooth durable,with less color difference.

Dingang's coating line for extra-thick aluminum coil with max thickness 3.0mm,is the only one in China.Coating line for extra-wide aluminum coil with max width 2400mm,is also the only one in China.

Full-Set Of Processing

Professional slitting line,can divide the coil into any width,with accuracy±0.02mm;

Professional cutting line,to make sheet with any length;

Embossed line colud process aluminum coil with max thickness (1.0mm of AA5754 H24);

Brushing line,that can make the aluminum coil brushed as required;

Full-set processing for food-grade aluminum coil&sheet.

Stable And Reliable Quality

Aimed at first-classed market,Dingang get the raw material from few excellent supplier like as Southwest Aluminum,Chalco,Nanshan Aluminum,Suimin and some from Novelis or Alcoa;the coating lacquer are mainly from PPG,Becker or Valspar.

Aimed at long term cooperation,Dingang works with an prefessional quality-inspection term that keeping online 24 hours,to make completely strict inspection and detailed record on each product.

Sufficient Raw-materials in Stock

To make an shorter lead time,Dingang holds in stock around 5000 tons of aluminum coil mill finishing,in alloy A1,A3 or A5 series;with thickness from 0.2mm to 3.0mm and width from 1000mm to 2400mm,also approx 2000 tons of coated aluminum coil & sheets.As the VIP customer of our suppliers,we could always get the raw-material as soon as possible.

Should any of items be of interest to you,please let us know.We shall be glad to give you our lowest quotations upon receipt of your detailed requirements.

In our trade with merchants of various countries,we always adhere to the principle of equality and mutual benefit.It is our hope to promote,by joint efforts,both trade and friendship to our mutual advantage.

Looking forward to receiving your enquiry soon.

Color Coated Aluminum Coil for Roofing and Wall Panel Use

As we all know, color coated aluminum coil is much better than color coated steel coil for roofing and wall making. Below is the main specification we Changzhou Dingang Metal Material Co., Ltd produces, please refer and contact us if you have requirement.

Using color coated aluminum coil has many Advantages like below.

1)Small Density:

The density of aluminum is only about one-third of steel. In the case of same thickness, calculate the final price on square meter basis, they are almost same.

2)Excellent Process ability:

Due to moderate structural strength of aluminum, it’s easy for processing and convenient to installation, which can reduce construction cost.

3)Nice Decoration

Use aluminum for external insulation decoration, it has bright overall visual. With the addition of paint coating process, that makes architectural appearance much more colorful and lively.

4)Long Period Of Validity

Because of the outstanding corrosion resistance, the period of validity can reach above 25 years under normal conditions.

5)High Recovery

The recovery rate can reach 85%.

Welcome your inquiries of color coated aluminum coil/sheet.

Changzhou Dingang Metal Material Co., Ltd

Website: www.cnchangsong.com

Aluminum-Magnesium Alloy 5XXX Material

The major characteristics of the 5xxx series are:

*Non-heat-treatable sand,permanent mold,and die castings

*Tougher to cast;provides good finishing characteristics

*Excellent corrosion resistance,machinability,and surface appearance

*Approximate ultimate tensile strength range:120 to 175 MPa(17-25ksi)

The common feature of this group of alloys is good resistance to corrosion.

Primary use alloys 5120 and 5140 have medium strength and good elongation and are suitable for components exposed to seawater or to other similar corrosive environments.These alloys often are used for door and window fittings,which can be decoratively anodized to give a metallic finish or provide a wide range of colors.Their castability is inferior to that of the aluminum-silicon alloys because of its magnesium content and consequently,long freezing range.For the reason,it tends to be replaced by 3550.Which has long been used for similar applications.For die castings where decorative anodizing is particularly important,alloy 5200 is quite suitable.

Building and construction markets

Building and construction encompasses those markets in which architectural and /or structural requirements come together.Such applications include residential housing,commercial storefronts and structures,conference centers and areas(i.e.,long roof bay requirements),highway bridges and roadside structures,and a variety of holding tanks and chemical structures(also considered under “chemical and petroleum markets”).Among the choices are:

*Bridges and other highway structures:6061 and 6063 extrusions,5083,5086 and 5454 plate.

*Storefronts,curtain wall:6063 extrusions

*Building sheet,siding:3005,3105 and 5005 sheet

*Arena and convention center roofs:6061 extrusions with 5*** alloy sheet panels

*Residential housing structures:6063 extrusions

*Architectural trim:5257,5657,6463

*Composite wall panels:5*** alloy sheet plus expanded polymers

Changzhou Dingang Metal Mateial Co.,Ltd

Which has been in the line for many years and is known as one of the leading exporters of metal materials in China since 2002.

Our main products suppliable at present as following:

Galvanized (Zinc Coating) Steel,Galvalume (Alu-zinc Coating) Steel,Pre-painted (Color Coated) Steel,Mirror (Anodized) Aluminum,Color Coated (Pre-painted) Aluminum,Heat Insulating Anti Corrosice Sheet,Corten Steel With Laser Cut For Decoration and so on.

Should any of items be of interest to you,please let us know.We shall be glad to give you our lowest quotations upon receipt of your detailed requirements.

In our trade with merchants of various countries,we always adhere to the principle of equality and mutual benefit.It is our hope to promote,by joint efforts,both trade and friendship to our mutual advantage.

Looking forward to receiving your enquiry soon.

Color Coated Aluminum Plate for Aluminum Hung Ceiling

Today we talk about the Color Coated Aluminum coil/sheet specification which is mainly used for hung ceiling. Our color coated aluminum coil/sheet can be designed to many styles of hung ceiling such as Bar-Type Pinch Plate, Punched Plate, Grilling, and Falling Curtain.

The main specifications:

Standard: GB3880-97, ASTM3004

Alloy& Temper: A3003 H24, A3003 H26, A3004 H24 and A3004 H26, etc

Thickness: 0.60-1.00mm (Recommend) And Customized

Common Width: 200-1300mm And Customized (Accurate To ±0.2mm)

Color Options: Primarily White, More than Dozens Kinds of White for Chosen; Also Can Produce According to Customer Request or RAL Standard Colors

Painting Types: PE or PVDF

Coating Thickness：25-28Micron

Protective Film: Usually Transparent Film, Also Can Customized With Brand Logo

Packaging: Seaworthy Packing (Flat Packing, Eye To Sky, Eye To Wall)

Delivery Date: Within 30 Days (Ordinary Aluminum Coils Standing Inventory More Than 5000 Tons. If Regular Specification Requirements From Long-term Customers, Guarantee That The Fastest Delivery To You)

The ordinary aluminum coils we purchase from Southwest Aluminum and Chalco Ruimin Company, the paint are all purchased from PPG or Nippon Company. Our color coated aluminum alloy product is optimal choice raw material of hung ceiling products and have been sold to the most famous ceiling manufacturer home and abroad. It can be processed as hung ceiling products as follows: Aluminum Alloy Bar-Type Pinch Plate, Aluminum Alloy Punched Plate, Aluminum Alloy Grilling and Aluminum Falling Curtain. Choose us and trust us. Changzhou Dingang Metal Material Co., Ltd will be your best business partner.

Changzhou Dingang Metal Material Co., Ltd.

Website: www.cnchangsong.com

Aluminum Alloy 7075 Instruction

Aluminum alloy 7075 is an aluminum alloy, with zinc as the primary alloying element. It is strong, with a strength comparable to many steels, and has good fatigue strength and average machinability. It has lower resistance to corrosion than many other Al alloys, but has significantly better corrosion resistance than the 2000 alloys. Its relatively high cost limits its use to applications where cheaper alloys are not suitable.

7075 aluminum alloy's composition roughly includes 5.6–6.1% zinc, 2.1–2.5% magnesium, 1.2–1.6% copper, and less than a half percent of silicon, iron, manganese, titanium, chromium, and other metals. It is produced in many tempers, some of which are 7075-0, 7075-T6, 7075-T651.

Basic Properties:

Aluminium 7075A has a density of 2.810 g/cm2.

Mechanical Properties：

The mechanical properties of 7075 depend greatly on the temper of the material.

7075-0

Un-heat-treated 7075 (7075-0 temper) has maximum tensile strength no more than 280 MPa (40,000 psi), and maximum yield strength no more than 140 MPa (21,000 psi). The material has an elongation (stretch before ultimate failure) of 9–10%. It is very highly corrosion-resistant and has good strength.

7075-T6

T6 temper 7075 has an ultimate tensile strength of 510–540 MPa (74,000–78,000 psi) and yield strength of at least 430–480 MPa (63,000–69,000 psi). It has a failure elongation of 5–11%.

The T6 temper is usually achieved by homogenizing the cast 7075 at 450 °C for several hours, quenching, and then aging at 120 °C for 24 hours. This yields the peak strength of the 7075 alloy. The strength is derived mainly from finely dispersed eta and eta' precipitates both within grains and along grain boundaries.

7075-T651

T651 temper 7075 has an ultimate tensile strength of 570 MPa (83,000 psi) and yield strength of 500 MPa (73,000 psi). It has a failure elongation of 3–9%. These properties can change depending on the form of material used. Thicker plate may exhibit lower strengths and elongation than the numbers listed above.

7075-T7

T7 temper has an ultimate tensile strength of 505 MPa (73,200 psi) and a yield strength of 435 MPa (63,100 psi). It has a failure elongation of 13%.[5] T7 temper is achieved by overaging (meaning aging past the peak hardness) the material. This is often accomplished by aging at 100–120 °C for several hours and then at 160–180 °C for 24 hours or more. The T7 temper produces a micro-structure of mostly eta precipitates. In contrast to the T6 temper, these eta particles are much larger and prefer growth along the grain boundaries. This reduces the susceptibility to stress corrosion cracking. T7 temper is equivalent to T73 temper.

7075-RRA

The retrogression and reage (RRA) temper is a multistage heat treatment temper. Starting with a sheet in the T6 temper, it involves overaging past peak hardness (T6 temper) to near the T7 temper. A subsequent reaging at 120 °C for 24 hours returns the hardness and strength to or very nearly to T6 temper levels.

RRA treatments can be accomplished with many different procedures. The general guidelines are retrogressing between 180–240 °C for 15 min 10 s.

Uses:

7000 series alloys such as 7075 are often used in transport applications, including marine, automotive and aviation, due to their high strength-to-density ratio.Their strength and light weight is also desirable in other fields. Rock climbing equipment, bicycle components, inlineskating-frames and hang glider airframes are commonly made from 7075 aluminium alloy. Hobby grade RC models commonly use 7075 and 6061 for chassis plates. 7075 is used in the manufacturing of M16 rifles for the American military. In particular high quality M16 rifle lower and upper receivers as well as extension tubes are typically made from 7075-T6 alloy. Desert Tactical Arms, SIG Sauer, and French armament company PGM use it for their precision rifles. Texas Black Rifle Co uses the alloy for its weapons and other parts, including the model 1836 AR-15 as well as their Glock Micro Comp It is also commonly used in shafts for lacrosse sticks, such as the STX sabre, and camping knife and fork sets. It is a common material used in competition yo-yos as well.

Due to its high strength, low density, thermal properties, and its ability to be highly polished, 7075 is widely used in mold tool manufacturing. This alloy has been further refined into other 7000 series alloys for this application, namely 7050 and 7020.

Changzhou Dingang Metal Mateial Co.,Ltd

Which has been in the line for many years and is known as one of the leading exporters of metal materials in China since 2002.

Our main products suppliable at present as following:

Galvanized (Zinc Coating) Steel,Galvalume (Alu-zinc Coating) Steel,Pre-painted (Color Coated) Steel,Mirror (Anodized) Aluminum,Color Coated (Pre-painted) Aluminum,Heat Insulating Anti Corrosice Sheet,Corten Steel With Laser Cut For Decoration and so on.

Should any of items be of interest to you,please let us know.We shall be glad to give you our lowest quotations upon receipt of your detailed requirements.

In our trade with merchants of various countries,we always adhere to the principle of equality and mutual benefit.It is our hope to promote,by joint efforts,both trade and friendship to our mutual advantage.

Looking forward to receiving your enquiry soon.

Color Coated Aluminum Coil for Aluminum Curtain Wall

One of the main applications of color coated aluminum coil is aluminum curtain wall. Here you can know more details of the product from Changzhou Dingang Metal Material Co., ltd NEWS.

Color coated aluminum curtain wall panel

Main Aluminum alloy –A5052, A3003, A6063, A6060, A6061, A6005, A7005 or customer's needs

Temper –Main T5/T6

Thickness -Above 1.0mm, recommend 1.2mm and above, or customized available

Color -Solid color, Metallic Color, Wooden/Stone Color, customized

Aluminum plate curtain wall is steel property good, light weight, high strength. Aluminum plate current version of the corrosion resistance is good and PVDF paint up to 25 years does not fade.

Aluminum curtain wall technology is good. The use of the first processing after the painting process, aluminum can be processed into a flat, curved and spherical and other complex collection of shapes.

Aluminum curtain wall is not easy to stain, easy to clean and maintenance. PVDF coating film of non-adhesive makes the surface is difficult to attach contaminant which is better to clean.

Aluminum curtain wall installation and construction is convenient and quick. Because aluminum was molded in the factory, the construction site only needs a simple fix without cutting.

Aluminum curtain wall can be recycled, environmentally friendly. Aluminum can be 100% recovery, recycling higher value.

The ordinary aluminum coils we purchase from Southwest Aluminum and Chalco Ruimin Company, the paint are all purchased from PPG or Nippon Company. Our color coated aluminum alloy product is optimal choice of roofing and wall raw material and have been sold to the most famous building contractors home and abroad. With our strict quality control and professional service, our color coated aluminum alloy coils products earned respects from both consumers and competitors, and widely used in many landmark buildings.

Changzhou Dingang Metal Material Co., Ltd

Website: www.cnchangsong.com