Corrugated steel sheets for roofing

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Product Description:

Commodity

Hot dip galvanized steel coil and sheet

Technical Standard:

JIS 3302 / ASTM A653 / EN10143

Grade

DX51D / DX52D/ DX53D/ S250,280,320GD

Types:

Commercial / Drawing / Deep Drawing / Structural quality

Width

500/650/726/820/9/1000/1200/1219/1220/1250mm

Thickness

0.12-2.8mm

Type of coating:

Galvanized

Zinc coating

Z30-275g/m2

Surface Treatment

Chromed / Skin-pass/ Oiled/Slightly Oiled/ Dry/ Anti-fingerprint

Surface structure:

Zero spangle / minimized spangle / regular spangle/ big spangle

ID coil

508mm or 610mm

Coil weight

3-8 MT per coil

Package:

Properly packed for ocean freight exportation in 20''containers

Application:

Industrial panels, roofing and siding for painting

Price terms

FOB,CFR,CIF

Payment terms

T/T or L/C

Delivery time

Within 30 days

Remarks

Insurance is all risks

MTC will be handed on with shipping documents

We accept the third party certification test,such as SGS/BV

Technical data :

Hot dipped galvanized coil Technical Data

Chemical Composition

GRADE

C

Si

Mn

P

S

Ti

SGCC/DX51D+Z

≤0.10

≤0.50

≤0.60

≤0.10

≤0.030

≤0.020

DX52D+Z

≤0.10

≤0.50

≤0.60

≤0.10

≤0.030

≤0.020

SGCD/DX53D+Z

≤0.10

≤0.30

≤0.50

≤0.05

≤0.030

≤0.020

SGCE/DX54D+Z

≤0.10

≤0.30

≤0.30

≤0.03

≤0.020

≤0.020

DX56D+Z

≤0.10

≤0.30

≤0.30

≤0.03

≤0.020

≤0.020

Structural

≤0.20

≤0.60

≤1.70

≤0.10

≤0.045

Hot dipped galvanized steel coil Mechanical Properties

GRADE

Yield Strength MPa

Tensile Strength MPa

Elongation %

SGCC(DX51D+Z)

≥205

≥270

-

SGCD(DX53D+Z)

-

≥270

38

SGCE(DX54D+Z)

-

≥270

40

DX56D+Z

-

≥270

42

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Q:Why low carbon steel have poor magnetic properties?
The composition of the steel is almost tertiary to many other considerations, except that there are certain elements and percentages of elements which tend to affect the crystaline structure in the steel. The most basic question is whether the crystaline arrangement of atoms in the steel is martensitic or austenitic, and many factors influence that. In general, martensitic structure is magnetic and austenitic structure doesn't respond much to magnetic fields, but there are varying degrees of martensitic and austenitic -- there is never a pure state. Read the articles at bottom.
Q:223 steel cased ammo?
Because some people ***** and moan about how the lacquer or polymer gums up the chamber causing torn case rims. But they don't clean there guns anyway so there point is irrelevant. Some say it wears out your extractor faster which is also bullshit. The steel casings are a milder bi-metal. Really its people complaining for the sake of complaining.
Q:Pros and cons of stainless steel firearms?
This Site Might Help You. RE: Pros and cons of stainless steel firearms? What are the pros with stainless steel? You don't have to oil them as much or you don't have to oil them at all? Is the rifling in the barrel typically stainless steel as well? if so, is this better accuracy or does the rifling last longer then conventional? are they worth the extra...
Q:How does water cooling affect the hardness of steel?
When steel is slowly cooled, lots of carbon diffusion takes place because it is not very soluble in steel at room temperature. The carbon is in solution at high temperatures, and is rejected out of the lattice as it cools. And when this happens, the microstructure will consist of ferrite and pearlite, and the lattice structure will be base centered cubic (bcc). If it is cooled fast enough, then the carbon gets trapped in the interstitial sites of the lattice and distorts it to a body centered tetragonal (same as bcc, but elongated in one direction) This elongation strains the lattice and makes it harder. Also, when cooled fast enough the atoms do not have time to diffuse like they normally would and they shear into place. This forms the hard phase of martensite that is desired of heat treated steel. But then it must be tempered back some because it is too brittle.
Q:timber truss versus steel truss?
How about another option - Steel Re-inforced Concrete Beams. Beam planks would span 8.4 metres but to keep the cost down have an I beam support at 4.2m. Concrete is great. It goes on quick, is sound proof, (very nice when it rains or for road traffic), can have gravel laid on top to act as a heat sink for winter sun and can be covered with normal roof steel if you want to hide it. Its also rust and borer free. While you would need good supports for the front and back, although with an I beam you can have a floating front, it is not much more than what is required for a wooden top. Design it right and your roof could be a future floor for the next addition.
Q:How can i make difference between iron and steel?
There are literally hundreds and hundreds of different commercial steel alloys and a good number of iron alloys so... it depends. Technically, steel is any alloy that is mostly Fe with some amount of carbon. Even if you have access to the necessary lab equipment, CTE (coef of thermal expansion) and specific heat are not very straight forward tests. There are, of course, chemical analysis instruments for measuring C content in steels so, if you really need to know, you can spend money at commercial lab that does these tests. One quick test to judge C content... touch the metal to a grinding wheel, higher C content produces more sparks. To calibrate the way this looks, compare the sparks from a drill bit (usually 1090 steel so 0.9 wt% C) to a steel nail (low C steel). Unfortunately, the difference in sparking between steels with pretty low C content and a piece of iron will not be very dramatic. Of course, iron might mean Cast Iron and, again, there are a good number of commercial cast iron alloys and there are 4 basic types of cast iron alloys and they contain high amounts of C.
Q:can my 3 nylon guitar strings be replaced with steel ones?
Be careful - if the guitar is strictly a classical guitar, then it is made to handle nylon strings only. If you put steel strings on a classical nylon-string guitar, you can bend the neck pretty bad due to the increased tension of the steel strings. Research your particular guitar in question and see if it is in fact a nylon-only classical guitar or not.
Q:where is cold formed steel framing used?
It will vary from location to location. A possible way of telling is how the material is joined. If the material is riveted together it is likely cold rolled. If the material is welded then its probably normalized steel (possibly annealed but less likely). Cold rolling increases the yield strength of the material so less of it is needed. However, it also make the material more brittle. Welding creates defects in the region surrounding the weld and these are more likely to grow and cause failure in a cold rolled steel than a normalised or annealed steels. In addition the heat from the welding will change the microstructure that was deliberately introduced by the cold rolling process resulting in a localised drop in yield strength. Normalised and annealed steels are more ductile and tougher than Cold rolled steel but they have a lower yield strength. Because they are tough and ductile they are less sensitive to crakcs and defects so welding won't lead to as big a reduction in strength. Another possible consideration is the environment they are used in. Steels exhibit a transition temperature (actually more like a range) where they go from behaving like a ductile material to a brittle material. A well known example of what this can cause are the Liberty ships in WW2 (Supply vessels from the US to the UK). These were made by welding together sheets of cold rolled steel to form one continuous Hull. Unfortuantely the transiton temperature of the steel taht was sued was around 4 degrees while the Baltic Ocean is about 0 degrees. As a result small cracks would grow and then when the reached a critical size they would tear through the ship at the speed of sound in the metal (1500m/s) and these massive cargo ships would literally snap like twigs. So, if the steel is being used somewhere really cold its unlikely to be Cold rolled too.
Q:About types of stainless steel for knifes.?
Ok so listen she already likes me what should I say
Q:how to make a steel helmet?
The okorder.com (Artist Blacksmiths) or on the sites of the two organizations that reproduce old costumes and tools - one is called The Society for Creative Anachronism, not sure of the other. Search terms to use might be hammering a helmet and forging medieval armor

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