{"id":3538,"date":"2025-06-18T14:18:11","date_gmt":"2025-06-18T06:18:11","guid":{"rendered":"https:\/\/www.rbymetal.com\/?post_type=product&p=3538"},"modified":"2025-06-18T14:19:56","modified_gmt":"2025-06-18T06:19:56","slug":"prepainted-galvanized-steel-coil","status":"publish","type":"product","link":"https:\/\/www.rbymetal.com\/index.php\/product\/prepainted-galvanized-steel-coil\/","title":{"rendered":"Prepainted Galvanized Steel Coil"},"content":{"rendered":"

\u00a0<\/strong><\/b><\/h2>\n

Prepainted Galvanized Steel Coil Description<\/strong><\/b><\/h2>\n

Steel components (such as sheets or wires) are galvanized using an automated process before they are cut to size.\u00a0This automated process will vary depending on the type of galvanized part. In general, steel components are immersed in a “galvanizing bath” of molten zinc for a short period of time. After the steel is removed from the bath, excess zinc is removed using a mechanical wiper, air knife, or steam. This leaves a relatively thin layer of galvanizing.<\/p>\n

\nScope of Application<\/strong><\/b><\/p>\n

Building Materials Field<\/strong><\/b>
\nElectrogalvanizing has a wide range of applications in the field of building materials. First of all, electro-galvanizing can be used to manufacture construction steel, which not only prevents metal oxidation and prolongs its service life, but also enhances the toughness, strength and corrosion resistance of steel, and improves the performance of steel. Secondly, in the decoration of building exterior walls, electro-galvanized aluminum alloy, electro-galvanized iron alloy and other materials are also widely used, which can protect the steel structure and prevent oxidation, but also has the characteristics of beauty and fire prevention.
\nAutomobile Manufacturing Field<\/strong><\/b>
\nElectrogalvanizing is also a commonly used material in the field of automobile manufacturing. Electro-galvanized coating can be used for surface protection and repair of automobile parts to avoid oxidation corrosion and damage, and to improve the service life of automobiles. The electro-galvanized coating can also be used in the manufacture of parts such as car frames and casings to avoid oxidation and corrosion, and improve the overall quality and durability of the car.
\nHome Appliance Manufacturing Field<\/strong><\/b>
\nIn the field of home appliance manufacturing, galvanizing also has its important applications. For example, the manufacture of refrigerators, washing machines and other household appliances shell, lining, refrigerator and other parts, usually need to use electro-galvanized material for surface coating, to prevent metal oxidation, improve appearance and performance.\n<\/p>\n

Product Parameters<\/strong><\/b><\/p>\n\n\n\n\n\n\n\n\n\n
Product Name<\/td>\nPrepainted Galvanized Steel Coil<\/td>\n<\/tr>\n
Thickness<\/td>\n0.12mm-3.5mm<\/td>\n<\/tr>\n
Width<\/td>\n600mm-1500mm<\/td>\n<\/tr>\n
Length<\/td>\n508mm\/610mm, Support Customization<\/td>\n<\/tr>\n
Standard<\/td>\nAISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.<\/td>\n<\/tr>\n
Zinc Layer<\/td>\nHot Galvanizing: 60-275g\/m\u00b2<\/td>\n<\/tr>\n
Pre-galvanized: 80-275g\/m\u00b2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Chemical Composition<\/strong><\/b><\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Standard<\/td>\nGrade<\/td>\nC<\/td>\nSi<\/td>\nMn<\/td>\nP<\/td>\nS<\/td>\nTi<\/td>\n<\/tr>\n
Forcold Forming<\/p>\n

Chinese Standard<\/td>\n

DX51D+Z<\/td>\n0.12<\/td>\n0.50<\/td>\n0.60<\/td>\n0.100<\/td>\n0.045<\/td>\n0.30<\/td>\n<\/tr>\n
DX52D+Z<\/td>\n0.12<\/td>\n0.50<\/td>\n0.60<\/td>\n0.100<\/td>\n0.045<\/td>\n0.30<\/td>\n<\/tr>\n
DX53D+Z<\/td>\n0.12<\/td>\n0.50<\/td>\n0.60<\/td>\n0.100<\/td>\n0.045<\/td>\n0.30<\/td>\n<\/tr>\n
DX54D+Z<\/td>\n0.12<\/td>\n0.50<\/td>\n0.60<\/td>\n0.100<\/td>\n0.045<\/td>\n0.30<\/td>\n<\/tr>\n
DX56D+Z<\/td>\n0.12<\/td>\n0.50<\/td>\n0.60<\/td>\n0.100<\/td>\n0.045<\/td>\n0.30<\/td>\n<\/tr>\n
DX57D+Z<\/td>\n0.12<\/td>\n0.50<\/td>\n0.60<\/td>\n0.100<\/td>\n0.045<\/td>\n0.30<\/td>\n<\/tr>\n
Forcold Forming<\/p>\n

Japanese Standard<\/td>\n

SGCC<\/td>\n0.15<\/td>\n0.50<\/td>\n0.80<\/td>\n0.050<\/td>\n0.030<\/td>\n0.025<\/td>\n<\/tr>\n
SGCD1
\nSGCD2<\/td>\n		0.12
\n0.10<\/td>\n		0.50
\n0.50<\/td>\n		0.60
\n0.45<\/td>\n		0.040
\n0.030<\/td>\n		0.030
\n0.030<\/td>\n		0.025
\n0.025<\/td>\n<\/tr>\n
SGCD3<\/td>\n0.08<\/td>\n0.50<\/td>\n0.45<\/td>\n0.030<\/td>\n0.030<\/td>\n0.025<\/td>\n<\/tr>\n
SGCD4<\/td>\n0.06<\/td>\n0.50<\/td>\n0.45<\/td>\n0.030<\/td>\n0.030<\/td>\n0.025<\/td>\n<\/tr>\n
For\u00a0Structure<\/p>\n

Japanese Standard<\/td>\n

SGC340<\/td>\n0.25<\/td>\n0.50<\/td>\n1.70<\/td>\n0.200<\/td>\n0.035<\/td>\n0.025<\/td>\n<\/tr>\n
SGC400
\nSGC440<\/td>\n		0.25
\n0.25<\/td>\n		0.50
\n0.50<\/td>\n		1.70
\n2.00<\/td>\n		0.200
\n0.200<\/td>\n		0.035
\n0.035<\/td>\n		0.150
\n0.150<\/td>\n<\/tr>\n
SGC490<\/td>\n0.30<\/td>\n0.50<\/td>\n2.00<\/td>\n0.200<\/td>\n0.035<\/td>\n0.025<\/td>\n<\/tr>\n
SGC510<\/td>\n0.30<\/td>\n0.50<\/td>\n2.50<\/td>\n0.200<\/td>\n0.035<\/td>\n0.025<\/td>\n<\/tr>\n
For\u00a0Structure<\/p>\n

AISI Standard<\/td>\n

S220GD+Z<\/td>\n0.20<\/td>\n0.60<\/td>\n0.70<\/td>\n0.100<\/td>\n0.045<\/td>\n0.025<\/td>\n<\/tr>\n
S250GD+Z<\/td>\n0.20<\/td>\n0.60<\/td>\n0.70<\/td>\n0.100<\/td>\n0.045<\/td>\n0.025<\/td>\n<\/tr>\n
S280GD+Z<\/td>\n0.20<\/td>\n0.60<\/td>\n0.70<\/td>\n0.100<\/td>\n0.045<\/td>\n0.025<\/td>\n<\/tr>\n
S320GD+Z<\/td>\n0.20<\/td>\n0.60<\/td>\n0.70<\/td>\n0.100<\/td>\n0.045<\/td>\n0.025<\/td>\n<\/tr>\n
S350GD+Z<\/td>\n0.20<\/td>\n0.60<\/td>\n0.70<\/td>\n0.100<\/td>\n0.045<\/td>\n0.150<\/td>\n<\/tr>\n
S550GD+Z<\/td>\n0.20<\/td>\n0.60<\/td>\n0.70<\/td>\n0.100<\/td>\n0.045<\/td>\n0.150<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mechanical Properties<\/strong><\/b><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Grade<\/td>\nYield Strength MPa\u2265<\/td>\nTensile Strength MPa\u2265<\/td>\nElongation A%\u2265<\/td>\n<\/tr>\n
DX51D Z\/ZM\/AZ\/AM<\/td>\n240-380<\/td>\n270-500<\/td>\n22<\/td>\n<\/tr>\n
DX52D Z\/ZM\/AZ\/AM<\/td>\n140-300<\/td>\n270-420<\/td>\n26<\/td>\n<\/tr>\n
DX53D Z\/ZM\/AZ\/AM<\/td>\n140-260<\/td>\n270-380<\/td>\n30<\/td>\n<\/tr>\n
DX54D Z\/ZM\/AZ\/AM<\/td>\n120-220<\/td>\n260-350<\/td>\n36<\/td>\n<\/tr>\n
S220GD Z\/ZM\/AM<\/td>\n220<\/td>\n300<\/td>\n20<\/td>\n<\/tr>\n
S250GD Z\/ZM\/AZ\/AM<\/td>\n250<\/td>\n330<\/td>\n19<\/td>\n<\/tr>\n
S280GD Z\/ZM\/AM<\/td>\n280<\/td>\n360<\/td>\n18<\/td>\n<\/tr>\n
S300GD A\/AM<\/td>\n300<\/td>\n380<\/td>\n18<\/td>\n<\/tr>\n
S320GD Z\/ZM\/AM<\/td>\n320<\/td>\n390<\/td>\n17<\/td>\n<\/tr>\n
S350GD Z\/ZM\/AZ\/AM<\/td>\n350<\/td>\n420<\/td>\n16<\/td>\n<\/tr>\n
S450GD A\/AM<\/td>\n450<\/td>\n480<\/td>\n15<\/td>\n<\/tr>\n
S550GD Z\/ZM\/AZ\/AM<\/td>\n550<\/td>\n550<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Galvanized Surface Selection<\/strong><\/b><\/p>\n\n\n\n\n
Zero Spangle<\/td>\nMinimized Spangle<\/td>\nNormal Spangle<\/td>\nLarge\u00a0Spangle<\/td>\n<\/tr>\n
\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n
Use of The Environment<\/td>\nRecommended Zinc Thickness<\/td>\n<\/tr>\n
Indoor Use<\/td>\nZ10 or Z12 (100g\/\u33a1or 120g\/\u33a1)<\/td>\n<\/tr>\n
Suburbs<\/td>\nZ20 and Painting (200g\/\u33a1)<\/td>\n<\/tr>\n
Urban or Industrial Area<\/td>\nZ27 (270g\/\u33a1) or G90 (US Standard) and painted<\/td>\n<\/tr>\n
Coastal Area<\/td>\nThicker than Z27\u00a0(270g\/\u33a1) or G90 (US Standard) and painted<\/td>\n<\/tr>\n
Punch or Deep Drawing Application<\/td>\nThicker than Z27 (270grams\/\u33a1) or G90 (US Standard) avoid coating peeling after stamping<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n\n\n\n
Surface Treatment Type<\/td>\nCode<\/td>\nFeatures<\/td>\n<\/tr>\n
Chromic Acid Treatment<\/td>\nC<\/td>\nGood corrosion resistance, suitable for bare state<\/td>\n<\/tr>\n
Chromic Acid Treatment+Oiling<\/td>\nS<\/td>\nGood corrosion resistance<\/td>\n<\/tr>\n
Phosphoric Acid Treatment (Including Sealing Treatment)<\/td>\nP<\/td>\nHave a certain corrosion resistance, good paint performance<\/td>\n<\/tr>\n
Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling<\/td>\nQ<\/td>\nHas a certain corrosion resistance, good paint performance, prevent rust during transportation and storage<\/td>\n<\/tr>\n
Phosphoric Acid Treatment (Excluding Sealing Treatment)<\/td>\nT<\/td>\nHave a certain corrosion resistance, good paint performance<\/td>\n<\/tr>\n
Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling<\/td>\nV<\/td>\nHas a certain corrosion resistance, good paint performance, and prevent rust<\/td>\n<\/tr>\n
Oiling<\/td>\nO<\/td>\nPrevent rust during transportation and storage<\/td>\n<\/tr>\n
No Treatment<\/td>\nM<\/td>\nSuitable for immediate painting<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Material Comparison<\/strong><\/b><\/p>\n\n\n\n\n\n\n\n\n
Chinese Standard<\/td>\nJapan Standard<\/td>\nEuropean Standard<\/td>\n<\/tr>\n
DX51D Z\/DC51D Z (CR)<\/td>\nSGCC<\/td>\nDX51D Z<\/td>\n<\/tr>\n
DX52D Z\/DC52D Z<\/td>\nSGCD1<\/td>\nDX52D With<\/td>\n<\/tr>\n
DX53D Z\/DC53D Z\/DX54D Z\/DC54D Z<\/td>\nSGCD2\/SGCD3<\/td>\nDX53D Z\/DX54D Z<\/td>\n<\/tr>\n
S220\/250\/280\/320\/350\/550GD Z<\/td>\nSGC340\/400\/440\/490\/570<\/td>\nS220\/250\/280\/320\/350GD Z<\/td>\n<\/tr>\n
DX51D Z\/DD51D Z (HR)<\/td>\nSGHC<\/td>\nDX51D Z<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

When steel components are used to make more complex finished products, they can be galvanized before the product is assembled. This is called pre-galvanizing, or “pre-galvanizing”. It may also be referred to as “in-line”, “continuous” or “rolled” galvanizing.<\/p>\n","protected":false},"featured_media":3505,"template":"","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[],"product_cat":[54,34,29],"product_tag":[],"class_list":{"0":"post-3538","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-galvanized-coil-strip","7":"product_cat-galvanized-steel","8":"product_cat-product","10":"first","11":"instock","12":"shipping-taxable","13":"product-type-simple","14":"entry","15":"content-bg","16":"loop-entry"},"taxonomy_info":{"product_cat":[{"value":54,"label":"Galvanized Coil\/Strip"},{"value":34,"label":"Galvanized Steel"},{"value":29,"label":"Product"}]},"featured_image_src_large":["https:\/\/www.rbymetal.com\/wp-content\/uploads\/2025\/06\/ea38af21-bc5f-44ec-8277-42aab8e3f44c.jpg",800,800,false],"author_info":[],"comment_info":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/product\/3538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/media\/3505"}],"wp:attachment":[{"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/media?parent=3538"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=3538"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=3538"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.rbymetal.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=3538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}