Spring plate. 
Standard GB. 
Materials 27SiMn, 35SiMn, 55SiMn, 60Si2Mn, 65Mn. 
Thickness 8-650mm. 
Width 1500-3000mm. 
Tolerances are in accordance with the requirements of the national standard. 
Surface treatment 65Mn spring steel is generally shot peened to form compressive stress on the spring surface, thus improving the fatigue performance of the spring. 
Process hot rolling. 
Certificate ISO 9001Mui 2008. 
Order quantity 25 tons (in one 20ft FCL). 
The delivery time is 15 won 20 days. 
Monthly output of 10000 tons. 
Description of 65Mn spring steel, manganese can improve hardenability, φ 12mm steel can be quenched in oil, the surface decarburization tendency is smaller than that of silicon steel, and the comprehensive mechanical properties after heat treatment are better than those of carbon steel, but it has overheating sensitivity and tempering brittleness. 
It can be used for small size flat, round spring, seat cushion spring and spring clocking. it can also make spring ring, valve spring, clutch spring, brake spring and cold-drawn steel wire cold coil spring. 
The method of payment is 30% more than 70% in advance; telegraphic transfer or irrevocable letter of credit at sight. 
Remarks on risks all risks and acceptance of third party inspection