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Galvanized Steel Coil
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    SECCN2 Galvanized Steel Coil Sheet in Roll

    Galvanized coil is produced by continuous hot-dip galvanizing process using hot-rolled steel strip or cold-rolled steel strip as substrate. Hot-dip galvanized sheets are supplied in rectangular flat sheets after cross-cutting; hot-dip galvanized coils are supplied in coils after coiling.

    Product Details(Feature/Advantages)



    Galvanized coil is produced by continuous hot-dip galvanizing process using hot-rolled steel strip or cold-rolled steel strip as substrate. Hot-dip galvanized sheets are supplied in rectangular flat sheets after cross-cutting; hot-dip galvanized coils are supplied in coils after coiling.

    Galvanized steel coil is one of the hot-selling products of Delong Metal. It is available in big, regular, small, and zero spangles. Compared to color steel coil, it is more affordable. Hot-dip galvanized coils are mainly used in containers, home appliances, automobiles, transportation, home business, construction and other fields. Especially in automobile manufacturing, steel structure construction, steel silo manufacturing and other industries. Their main features are: good surface quality, strong corrosion resistance, benefit from deep processing, economical and practical, etc.

    As a wholesale supplier, Delong Metal can meet bulk orders timely. Also, we will offer a direct-sale price to lower your cost. If you are interested, please contact us for details.



    SPECIFICATION PARAMETER
    Commodity Galvanized Steel Coil
    Grade SGCC, SGCD, SGCE
    DX51D+Z, DX52D+Z, DX53D+Z, DX54D+Z, DX56D+Z
    S250GD+Z,S280GD+Z, S350GD+Z,S550GD+Z
    Standard: AISI, ASTM, BS, DIN, GB, JIS
    Zinc coated: 30g/m2-275g/m2
    Spangle  Zero spangles, Small spangles, Regular spangles, Big spangles
    Surface treatment Chromated, oiled/non-oiled and anti-finger printing
    Thickness 0.12-2.0mm
    Width 600-2,000mm
    Coil Weight 3 – 5 tons  (can be customized)
    Certificates SGS, BV, ISO 9001
    Supply Ability 40000MT/month
    MOQ 5MT
    Package Standard export package
    Substrate Hot rolled steel/Cold rolled steel
    Tolerance Thickness: 0.01 mm
    Width: 2 mm
    ID 508mm – 610mm
    Trade Term FOB, CFR, CIF
    Payment terms T/T, L/C at sight, West Union, D/P, D/A, Paypal
    Delivery time 7-14 days after confirmed order
    Loading port Tianjin port
    Container size 20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High)
    40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High)
    40ft HC: 12032mm(Length)x2352mm(Width)x2698mm(High)

    STEEL GRADE CHEMICAL COMPOSITION %
    C Si Mn S P
    x103 x103 x102 x103 x103
    JIS G3302 SGCC 12 30 41 31 21
    JIS G3302 SGCH 12 10 21 18 8
    ASTM A653 CS.B 29 30 60 35 30
    DX51D+Z 20 21 18 1.8 11
    G550 12 6 73 5 17

    Material Chinese Code Japanese Code European Code
    Commercial Use DX51D+Z/DC51D+Z (CR) SGCC DX51D+Z
    Drawing Quality DX52D+Z/DC52D+Z SGCD1 DX52D+Z
    Deep Drawing Quality DX53D+Z/DC53D+Z/DX54D+Z/DC54D+Z SGCD2/SGCD3 DX53D+Z/DX54D+Z
    Structural Use S220/250/280/320/350/550GD+Z SGC340/400/440/490/570 S220/250/280/320/350GD+Z
    Commercial Use DX51D+Z/DD51D+Z (HR) SGHC DX51D+Z


    Surface treatment type Code Feature
    Chromic acid treatment C Good corrosion resistance, suitable for bare state
    Chromic acid treatment + oiling S Good corrosion resistance
    Phosphoric acid treatment (including sealing treatment) P A certain degree of corrosion resistance, good paint performance
    Phosphoric acid treatment (including sealing treatment) + oiling Q It has certain corrosion resistance, good paint performance, and prevents rust during transportation and storage
    Phosphoric acid treatment (excluding sealing treatment) T A certain degree of corrosion resistance, good paint performance
    Phosphoric acid treatment (excluding sealing treatment) + oiling V Have certain corrosion resistance, good paint performance, and prevent rust
    Oiled O Prevent rust during transportation and storage
    No treatment M Suitable for immediate painting

    Galvanized Steel Coil Gauge Chart
    Gauge mm Inches
    8 4.27 0.1681
    9 3.89 0.1532
    10 3.51 0.1382
    11 3.13 0.1233
    12 2.75 0.1084
    14 1.99 0.0785
    16 1.61 0.0635
    18 1.31 0.0516
    20 1.01 0.0396
    21 0.93 0.0366
    22 0.85 0.0336
    23 0.78 0.0306
    24 0.7 0.0276
    25 0.63 0.0247
    26 0.55 0.0217
    27 0.51 0.0202
    28 0.47 0.0187
    30 0.4 0.0157

    Spangle is formed during the hot-dip galvanizing process. The size, brightness, and surface of spangles mainly depend on the composition of the zinc layer and the cooling method. According to the size, it includes small spangles, regular spangles, big spangles, and free spangles. They look different, but the spangles almost will not 
    influence the quality of galvanized steel. You can choose according to your preference and use purpose.

    (1) Big or Regular Spangles
    Spangle-promoting elements are added to the zinc bath. Then beautiful spangles are formed as the zinc layer solidifies. It looks good. But the grains are coarse and there is slight unevenness. In a word, its adhesion is poor but weather resistance is good. It is most suitable for guardrail, blower, duct, rolling shutter, drain pipe, ceiling bracket, etc.

    (2) Small Spangles
    During the solidification process of the zinc layer, zinc grains are artificially restricted to form as fine spangles as possible. The spangle size can be controlled by cooling time. Generally, the shorter the cooling time, the smaller the size. Its coating performance is great. Therefore, it is perfect for drainage pipes, ceiling brackets, door columns, the substrate for color coated steel, car body panels, guardrails, blowers, etc.


    (3) Zero Spangles
    By adjusting the chemical composition of the bath, the coating has a uniform surface without visible spangles. The grains are very fine and smooth. It has excellent corrosion resistance and good coating performance. It is also ideal for drainage pipes, automobile components, back panels for home appliances, automobile body panels, guardrails, blowers, etc.



    Galvanized coil features lightweight, aesthetics, and excellent corrosion resistance. It can be used directly or as the base metal for PPGI steel. Therefore, GI coil has been a new material for many fields, such as construction, shipbuilding, vehicle manufacturing, furniture, home appliances, etc.

    1. Construction
    They are often used as roofing sheets, interior and exterior wall panels, door panels and frames, the surface sheet of the balcony, ceiling, railings, partition walls, windows and doors, gutter, sound insulation wall, ventilation ducts, rainwater pipes, rolling shutters, agricultural warehouses, etc.

    2. Home Appliances
    GI coil is widely applied to home appliances, such as the back panel of air conditioners, and the outer casing of washing machines, water heaters, refrigerators, microwave ovens, switch cabinets, instrument cabinets, etc.

    3. Transportation
    It is mainly used as decorative panels for cars, corrosion-resistant parts for cars, decks of trains or ships, containers, road signs, isolation fences, ship bulkheads, etc.

    4. Light Industry
    It is ideal for making chimneys, kitchen utensils, garbage cans, paint buckets, etc. At Wanzhi Steel, we also make some galvanized products, such as chimney pipes, door panels, corrugated roofing sheets, floor decks, stove panels, etc.

    5. Furniture, such as wardrobes, lockers, bookcases, lampshades, desks, beds, bookshelves, etc.

    6. Other Uses, such as post and telecommunication cable, highway guardrails, billboards, newsstands, etc.






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