... use buidling material, pip, the corrugated sheet and sandwich panel, and so on.our prodcution paramets as follows,No. ... 2518Ordinary use, mechanical seaming, deep punching, and ultra-deep punching. Coating and welding performances of alloying hot galvanizing are ... high-strength steel, and dual-phase steel. Good corrosion resistance and processability. supplying the best price for CR and HR steel coil/ ...