What are the key points for welding SPCC coils?
Select welding wire with a diameter of 0.8–1.2mm and a welding current of 80–150A; clean the surface of oil and rust before welding; clean the weld slag after welding and apply rust-preventive coating.
What are the installation and fixing methods for SPCC coils?
Use self-tapping screws and rivets for thin plates; use bolts and welding for thick plates; pre-drill holes before fixing to avoid deformation of the plate surface.
What are the key points for joint treatment of SPCC coils?
Control the joint gap to 0.1–0.3mm; fill the gap with sealant; finish exposed joints to improve aesthetics and sealing.
What are the key points for maintenance of SPCC coils?
Regularly check the integrity of the surface coating/plating; repair any damage promptly; avoid scratching the surface with hard objects; clean with a soft cloth, avoiding strong acid and alkali cleaners.
What is the estimated service life of SPCC coils? Indoor dry environment (no anti-corrosion treatment): 5–8 years; Indoor high humidity environment (spraying/phosphating): 8–12 years; Outdoor protective treatment (hot-dip galvanizing): 15–20 years.