Hot-dip Zinc Coating Steel Building Roof Sheets in Coil Prime Quality

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
50 m.t.
Supply Capability:
10000 m.t./month

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1.Structure of Hot-Dip Galvanized Steel Sheet Description

Hot-dip galvanized steel coils are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layers of zinc to protect against rust. It is especially useful for countless outdoor and industrial applications. Production of cold formed corrugated sheets and profiles for roofing, cladding, decking, tiles, sandwich walls, rainwater protective systems, air conditioning duct as well as electrical appliances and engineering.

2.Main Features of the Hot-Dip Galvanized Steel Sheet

• Excellent process capability

• Smooth and flat surface

• Workability, durability 

• Excellent anticorrosive property

• High strength

• Good formability

• Good visual effect

3.Hot-Dip Galvanized Steel Sheet Images

 Hot-dip Zinc Coating Steel Building Roof  Sheets in Coil Prime Quality

 4.Hot-Dip Galvanized Steel Sheet Specification

Standard: ASTM, JIS,EN

Grade: CS, DX51D+Z,SGCC, SS 230~550,S220GD+Z~S550GD+Z, SGC340~SGC570

Thickness: 0.1mm~5mm

Width: max 2000mm

Coil weight:3-12 MT

Coil ID:508/610mm

Surface structure: zero spangle, regular spangle or minimum spangle

Surface treatment: Chromate treatment, Oiled/dry, skinpassed/non-skinpassed

Packing: Standard seaworthy export package

Technology test results:

Processability

Yield strength

Tensile strength

Elongation %

180°cold-bending

Common PV

-

270-500

-

d=0,intact,no zinc removal

Mechanical interlocking JY

-

270-500

-

d=0,intact,no zinc removal

Structure JG

>=240

>=370

>=18

d=0,intact,no zinc removal

Deep drawn SC

-

270-380

>=30

d=0,intact,no zinc removal

EDDQ SC

-

270-380

>=30

d=0,intact,no zinc removal

 

 5.FAQ of Hot-Dip Galvanized Steel Sheet 

We have organized several common questions for our clientsmay help you sincerely: 

1.How about your company

A world class manufacturer & supplier of castings forging in carbon steel and alloy steelis one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.

2.How to guarantee the quality of the products

We have established the international advanced quality management systemevery link from raw material to final product we have strict quality testWe resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

3. How long can we receive the product after purchase?

Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-30 days, but the shipment will depend on the vessel situation.

 

 

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Q:What is hot and cold rolled steel plate? How to distinguish? What high hardness? Which will produce noisy eye?
As the name suggests, hot rolling, rolling temperature is high, so the deformation resistance is small, can achieve large deformation in rolling steel plate. For example, the general continuous casting slab thickness is about 230mm, and after roughing mill and finishing mill, the final thickness of 1~20mm. at the same time, because the steel plate width thickness ratio is small, the size precision is relatively low, not easy appear the flatness problem, mainly to control the convexity. For the organization required, generally through controlled rolling and cooling control is realized, microstructure and mechanical properties of the rolling temperature, finishing temperature and coiling temperature to control strip finishing. Cold, generally in the heating process is not open before rolling. However, because the strip thickness is small, it is easy to appear the flatness problem. Moreover, after cold rolling is finished, therefore, in order to control the dimensional accuracy and surface quality of steel strip, using a lot of tedious process. The cold rolling production line, equipment, process complex With the user to improve the shape and surface quality of the strip size precision, plate, cold rolling mill control model, L1 and L2 system, the shape control means relative to hot. And temperature is one of the important control index of rolls and strip.
Q:What can be painted on galvanized steel sheet?
Paint matching1. The paint preparation system used for galvanized steel in soaking or humid environment must be alkali resistant and can not be saponified. Therefore, it is advisable to choose epoxy type coating. Best with epoxy zinc yellow primer.2, for exposure in the dry environment of galvanized steel, zinc yellow epoxy primer can be used with acrylic polyurethane topcoat, or intermediate epoxy zinc chromate primer + epoxy micaceous iron oxide + fluorocarbon topcoat with ultra weatherability, long service life of the supporting scheme.In short, surface treatment is very important, considering the durability of galvanized parts, it is recommended to use the above two kinds of matching paint to ensure the normal service life and reduce the cost of intermediate maintenance.
Q:Steel plate pile length, adjacent two steel plate pile joints should be staggered what position?
If the joint in the same position, such as 9+9m then need to stagger joint position,Avoid stress in one position that results in joint fracture and deformation risk.
Q:What does "steel plate 10t" mean in the specification column of engineering material?
Steel plate by thickness, thin steel plate <4 mm (thinnest 0.2 mm), thick steel plate 4~60 mm, extra thick steel plate 60~115 mm.The steel plate is divided into hot-rolled and cold-rolled parts according to rolling.
Q:What's the difference between single rolling steel sheet and continuous rolling steel plate?
Continuous plate refers to the hot rolling and cold rolling steel plate, rolling steel in rolling end is rolling roll, after Kaiping became a continuous plate after segmentation, due to the presence of curling and Kaiping rolling steel process, usually there are some residual stress, usually thin (less than 25mm) is narrow (usually below 2100mm).
Q:What is the thickness of the paint board?
As a decorative wall painting board, the scale is greater, a 122*244*1.8cm UV paint board. The most common market in general is 15-18mm, one of 18mm's highest market share, in addition to 12mm, 9mm, 5mm thickness, if it is made, manufacturers generally have the ability to make 3mm-35mm between any thickness out.
Q:What is called steel plate sanding process?
Steel plate sand, we call sandblasting, sandblasting is the steel structure of the steel plate surface treatment.
Q:What welding rod should be used for welding of cast iron and Q235B steel plate?
Q235B is a kind of low carbon steel commonly used in China, good welding performance, applicable to a variety of welding engineering used J422 (new brand E4303) in order to improve the efficiency of welding, and can also be used CO2 welding, welding wire can be used H08.
Q:How much is the rent for a day of Larson steel sheet pile
As a kind of new building materials in the Larson steel sheet pile cofferdam, bridge construction, large pipeline, temporary ditch excavation for retaining, retaining water and sand retaining wall; in the wharf, unloading field wall, retaining wall, Levee Revetment, play an important role in engineering.
Q:What are the problems encountered in the construction of steel sheet piles? How to deal with
During piling, sometimes large blocks of stone or other unknown obstacles are encountered, which results in inadequate penetration of steel sheet piles and the use of corner piles or arc piles to bypass obstructions.

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