Q:Q195 Cost comparison between galvanized steel and SPCC?
A:Initial cost: Q195 galvanized steel is 10%-20% higher than SPCC (galvanizing process cost).
Maintenance cost: Q195 galvanized steel requires almost no maintenance, SPCC requires regular painting, and the long-term comprehensive cost of Q195 is lower.
Q:Q195 What are the key differences between galvanized steel and SPCC?
A:Corrosion resistance: The zinc layer of Q195 galvanized steel provides long-term protection and is suitable for high humidity and high salt spray environments (such as coastal buildings); SPCC needs to rely on coating and is suitable for indoor or short-term use.
Processing adaptability: SPCC has a smaller bending radius (≥1.0t) due to its lack of coating, and is suitable for complex forming (such as stamping of home appliance housings); Q195 galvanized steel has a thick coating, so a larger bending radius needs to be reserved to avoid cracking.
Q:Q195 What are the differences in standards and processes between SPCC and SPCC?
A:Q195 Galvanized steel: Follows Chinese GB/T 700 (substrate) and GB/T 3091 (galvanized steel pipe) standards, and forms a zinc coating through hot-dip galvanizing or electroplating.
SPCC: Follows Japanese JIS G3141 standard, produced by cold rolling process, the surface is not coated, and requires additional painting or electroplating.
Q:Q195 What are the differences in the application scenarios of galvanized steel and SPCC?
A:Typical applications of Q195 galvanized steel
Construction field: light steel keel, scaffolding, transmission tower, taking advantage of its high weather resistance and low maintenance cost.
Pipeline system: hot-dip galvanized steel pipe (DN25-DN150) is used for water heating and fire protection, with a coating thickness of ≥60μm to resist water corrosion.
Agricultural machinery: tractor frame, harvester parts, taking into account both strength and rust prevention requirements.
Typical Applications of SPCC
Home appliances and consumer electronics: refrigerator side panels, computer cases, mobile phone cases, smooth surfaces and easy to paint.
Automobile manufacturing: interior brackets, instrument panel frames, high-precision molding and good conductivity are required. Precision parts: motor housings, parts inside distribution cabinets, relying on the high dimensional accuracy of cold rolling process.
Q:Q195What are the differences in welding process between galvanized steel and SPCC?
A:Q195 galvanized steel: Before welding, the zinc layer at the weld needs to be polished to expose the substrate to reduce the pores caused by zinc vapor. Silicon-containing welding wire is recommended.
SPCC: Can be directly welded without special requirements, suitable for automated production lines.