Cold Rolled Galvanized Steel Coils Dx51d Z30-275g 0.12 - 4mm For Roofing Sheet

High Quality Dx51d Z30-275g Cold Rolled Galvanized Steel Coils for Roofing Sheet

Is cold rolled steel stronger than galvanized steel?
Cold-rolled steel has superior directional strength, which is valuable for certain high-load applications.

What is the difference between GI and hot-dip galvanized?
The key difference between galvanized and hot dip galvanized is that most galvanized materials have a smooth

and sharp finishing, whereas hot sip galvanized structures have a rough finishing. Galvanization is a process

of preventing metal surfaces from corrosion.

Which is better galvanized or hot dipped galvanized?

As mentioned, pre-galvanized components are usually only immersed in the galvanizing bath for a very short time, resulting in a relatively thin coating. The thicker zinc coating produced by hot dip galvanization offers improved rust and corrosion protection versus pre-galvanization.

Product description

About Us

Shandong Duohe Import and Export Co., Ltd. is located on the new Asia-Europe Land Bridge to the north of Lianyungang City, Qingdao City, Shandong Province. Qingdao is close to Liaoning (Bensteel), Liaoning (Bensteel), Shanghai (Baosteel), Ningbo (Baoxin), Kunshan (Kunshan), geographical location, water, land and air transportation is convenient. Qingdao has become the largest carbon steel plate and coil supply center in China. As one of the largest shareholders and manufacturers of industrial grade carbon steel products and derivatives in Qingdao, we have an inventory of 70,000 tons per month, so we can deliver quickly.

Our Products

The company has three factories, with nearly 8 years of production experience, focusing on coil, roundwood, plate, pipe, storage and processing, has a large number of high-quality management, technology and sales professionals, the introduction of a series of advanced processing equipment. Products are produced in strict accordance with GB, ASTM, EN, JIS and other national standards. We provide a variety of carbon steel, including high carbon, medium carbon steel, low carbon steel, bearing steel, tensile steel, heat resistant alloy, nickel alloy, special steel, non-ferrous metals and their alloys, alloy steel, low carbon alloy steel, stainless steel, to meet the requirements of different customers. Products are widely used in engineering, coal mine, textile, electric power, boiler, machinery, military and other fields.

Our company has also maintained business relations with a number of Chinese state-owned enterprises (China Railway No. 10 Bureau Group Co., LTD., China Railway No. 10 Bureau Construction Co., LTD., etc.), participated in the Beijing-Shanghai high-speed Railway National construction project (Jinan part), Zhangjiakou Hohhot high-speed railway national construction project, and provided steel supporting materials for construction projects.

The company will adhere to the "quality first, customer first" principle, long-term service in the national household appliances, elevators, tableware, jewelry, water tank, machinery and other manufacturers. Precision machined products to meet your requirements for high quality. Our company is a collection of distribution, warehousing as one of the modern enterprises.

Sales

Our exporting market covers Taiwan, MID-East, India, South-East Asia, Russian, South America, and etc. According to our customers′ Requirements, we customized products with material of Baosteel, Tisco, Jisco, Lisco, Posco, etc, satisfying defferent request of all our customers.

Warehouse

We have enough steel sheets in stock, can start cutting instantly，which can make us ship the delivery within 7-15 days(except under special circumstances).

Convenient service

1. The company provides free samples and third-party testing services free of charge according to customer requirements.
2. The company is responsible for the overall quality tracking of the steel products sold, so as to eliminate your worries.
3. Customers can choose their own length or other requirements at will

Hopes
If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.