ASTM A653 Galvanized Steel Coil G60 G90 Regular Spangle DX51D GI Steel Roll
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275g 100g 40g zero regular small large spangle galvanize steel coil
Spangles are a surface morphology of hot-dip pure zinc coils. When the steel strip passes through the zinc pot, the surface is coated with liquid zinc. Then, during the natural solidification of the zinc layer, zinc grains nucleate and grow, and spangles appear.
American Standard ASTM classification is divided into three categories (ASTM A653):
1. Normal spangle galvanized coil: It is not required to control the zinc layer solidification process, and spangles of various sizes are allowed to be generated during the natural solidification process;
2. Small spangle galvanized coil: It is required to control the zinc layer solidification process to obtain spangles of relatively uniform and small size, but still visible to the naked eye;
3. Zero spangle galvanized coil: Small spangles that are invisible to the naked eye are obtained through control measures.
Influence on the size of spangles of galvanized coils: (1) Raw materials: The thicker the raw steel plate and the smaller the surface roughness, the larger the spangles. (2) Cooling rate: The faster the cooling rate, the shorter the crystal growth time, and the smaller the spangles. (3) Number of crystal centers: The size of the spangle is closely related to the number of spangle centers. Small spangle galvanized coils are suitable for painting, while smooth spangle galvanized coils are suitable for deep drawing. Nowadays, people are demanding to minimize or eliminate spangles.
Hot-dip galvanized coils can be divided into hot-rolled galvanized coils and cold-rolled hot-dip galvanized coils, which are mainly used in construction, home appliances, automobiles, containers, transportation and household industries. Especially steel structure construction, automobile manufacturing, steel silo manufacturing and other industries. Their main features are: strong corrosion resistance, good surface quality, conducive to deep processing, economical and practical, etc.
Q/BQB 420-2003 |
EN 10142:2000 |
EN 10142:1990 |
JISG3302-1994 |
ASTMA653M-2002 |
| Q/BQB 420-2003 | EN 10147:2000 |
EN 10147:1991 |
||
| Q/BQB 420-2003 | EN 10292:2000 |
|||
DC51D+Z(St01Z,St02Z,St03Z),DC51D+ZF |
DX51D+Z,+ZF |
FeP02GZ,ZF |
SGCC |
CS Type C |
DC52D+Z(St04Z) |
DX52D+Z,+ZF |
FeP03GZ,ZF |
SGCD1 |
CS Type A,Type B |
DC53D+Z(St05Z) |
DX53D+Z,+ZF |
FeP05GZ,ZF |
SGCD2 |
FS Type A,Type B |
distinguish |
Surface and Appearance Requirements |
Shandong Anli Metal Co., Ltd. is a leading comprehensive enterprise integrating various metal products. Our portfolio includes hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, steel sections, steel pipes, heat exchange pipes, automobile exhaust pipes, anchor rods, steel wires, and metal mesh. Additionally, we offer stainless steel, aluminum, copper, and metal raw materials such as billets, aluminum ingots, zinc ingots, magnesium ingots, and lead ingots.
With five production and sales bases strategically located in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan, and Tai'an, we boast over 100 production lines. Our group company has imported the most advanced technology from Germany, Japan, Belgium, the United States, and the United Kingdom for iron-smelting and steel processing. Equipped with a complete automatic system, we have become one of the largest and most advanced professional manufacturers in China.
We possess four nationally recognized laboratories, two technical engineering centers, and five corporate technology centers, ensuring the highest quality standards. Our products are exported to more than 50 countries and regions worldwide, including North America, South America, Europe, the Middle East, Russia, Africa, and others.
Company Philosophy:
• Quality First: We adhere strictly to production standards during production and inspection.
• Price Advantage: We offer discounts based on real market prices.
• Transaction Security: Customer funds are always protected.
• After-Sales Guarantee: We treat customer problems as our own.
• Long-Term Cooperation: Our quality assurance, price advantage, and sincere service ensure lasting partnerships.
Shandong Anli Metal, with quality as the foundation and technology as the leader, sincerely invites friends from all walks of life to join us creating a brilliant chapter in the metal manufacturing industry!
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