Galvanized Steel Sheet

      After the hot-dip galvanized steel sheet is pulled out of the zinc pot, the appearance of the crystal grains formed as the zinc layer cools and solidifies is called spangles. The size, brightness and surface morphology of spangles depend on a series of factors, but they are mainly related to the composition of the zinc layer and the cooling method.Galvanized steel coil has the advantages of uniform coating, strong adhesion and long service life.

GALVANIZED STEEL SHEET COATING LAYER

ANTI-FINGER PRINTING ,CHROMATED, OILED/ NON-OILED

ZN PLATING LAYER (20-275G/SM)

COLD ROLLED STEEL SHEET

GALVANIZED STEEL SHEET TYPES

1. HOT-DIP GALVANIZED STEEL SHEET (Z)

AS THE NAME IMPLIES, THE STEEL SHEET IS IMMERSED IN THE MOLTEN ZINC BATH CONTINUOUSLY SO THAT THE COIL IS COVERED WITH A LAYER OF ZINC ON ITS SURFACE. HOT-DIP GALVANIZING IS IMMERSING THE CLEANED IRON SHEET INTO THE MOLTEN ZINC BATH AT ABOUT 450 DEGREES TO FORM A ZINC LAYER. THE ZINC CONTENT SHOULD NOT BE LESS THAN 99%. IT IS THE MOST COMMONLY USED METHOD. IT HAS SOME ADVANTAGEOUS FEATURES:

1) THE ENTIRE STEEL SURFACE IS UNIFORMLY COVERED WITH A ZINC LAYER, EVEN THE CORNERS, HOLLOWS, ETC. SO THAT THE STEEL SHEET IS FULLY PROTECTED.

2) THE ZINC COATING OF HOT DIP GALVANIZED STEEL IS THICK AND TOUGH, WHICH OFFERS SUPERIOR CORROSION RESISTANCE. SO IT IS MORE DURABLE TO USE. AT WANZHI STEEL, THE MAXIMUM ZINC LAYER THICKNESS CAN REACH UP TO 275 G/M2.

BUT AFTER CONTINUOUS ANNEALING AND HOT-DIP GALVANIZING, THE STEEL COIL IS HEATED AND COOLED IN A SHORT TIME SO THAT ITS STRENGTH AND PLASTICITY ARE AFFECTED TO A CERTAIN EXTENT.

2. ZINC-IRON ALLOY GALVANIZED STEEL SHEET (ZF)

3. THE HOT-DIP GALVANIZING PROCESS ALSO MANUFACTURES THIS KIND OF STEEL COIL. BUT IT IS HEATED TO ABOUT 500 ℃ IMMEDIATELY TO FORM AN ALLOY COATING OF ZINC AND IRON AFTER IT IS OUT OF THE ZINC BATH. THIS GALVANIZED COIL HAS GOOD COATING ADHESION AND WELDABILITY. THAT IS, IT CAN BE PAINTED DIRECTLY WITHOUT FURTHER TREATMENT, OTHER THAN CLEANING. THE COLOR IS MATT OFF-WHITE, AND IT APPEARS DARK GRAY AFTER OILING AND IT HAS NO SPANGLES. IT IS PERFECT FOR MAKING ROLLING SHUTTERS, SIGNBOARDS, PANELS OF VENDING MACHINES, REFRIGERATORS, WASHING MACHINES, DISPLAY CABINETS, OFFICE CABINETS, ETC.

4. ELECTRO-GALVANIZED STEEL SHEET

5. ELECTRO-GALVANIZING IS A PROCESS OF APPLYING A LAYER OF ZINC TO STEEL THROUGH ELECTROPLATING, WITH A SALINE ANODE AND STEEL CONDUCTOR. IT BASICALLY ENSURES THE SAME PERFORMANCE OF COLD ROLLED SHEETS THROUGH COLD GALVANIZING. ALSO, IT IS ABLE TO ENHANCE THE CORROSION AND HEAT RESISTANCE OF STEEL. ITS SURFACE IS SMOOTH AND UNIFORM, AND IT HAS GOOD WORKABILITY. ALSO, IT LOOKS SHINY AND SILVER-WHITE, WHICH IS MORE BEAUTIFUL THAN A HOT-DIP ONE. MOREOVER, IT IS CHEAPER THAN HOT-DIP GALVANIZED STEEL. HOWEVER, THE ZINC COATING IS THINNER, AND THE CORROSION RESISTANCE IS NOT AS GOOD AS THAT OF HOT-DIP GALVANIZED COILS.

What is GI and GL ?

Hot dipped galvanized steel sheet ( GI ) is made of carbon steel coated in zinc utilizing the hot-dip process ;

Hot dipped galvalume steel sheet ( GL ) is carbon steel coated with an alloy that combines the impervious properties of aluminum with the malleability and galvanic protection of zinc .

PACKING & DELIVERY :

1) 20FT CONTAINER: 26-28 TONS (CAN LOAD 5.8M MAX)

2) 40FT CONTAINER: 26-28 TONS (CAN LOAD 11.8M MAX)

3) MORE THAN 100TONS:CAN PACK BY BULK VESSEL

4) AS YOUR REQUIREMENT.

FAQ

Q: Can I get samples before order ?

A: Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings ;

Q: Can I go to your factory to visit?

A: Of course, we welcome customers from all over the world to visit our factory ;

Q: How can I get a quotation from you ? 

A: You can leave us message or send us by email , and we will reply every message and email in time. Or we may talk on line ;

Q: What product information do I need to provide ?

A: You need to provide the material, thickness, width, length or any other detailes and the number of tons you want to purchase ;

Q: Does the product have quality inspection before loading ?

A: Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely ;

Q: How do we trust your company ? 

A: We specialise in steel business for years , headquarter locates in Jinan City, Shandong province . You are welcome to investigate in any ways .

CONTACT US :

SHANDONG ZHONTAI COLORED STEEL PLATE CO., LTD

CONTACT PERSON : IDA

WHAT'SAPP / WECHAT : +86 15865289721

E-MAIL :EXPORT@ZTSTEELCOIL.COM

FACTORY ADD.: 

FENGHUANG NORTH ROAD , HIGH TECH ZONE, JINAN CITY, SHANDONG PROVINCE