roller chain 1.standard :ISO/DIN, ANSI. 2.professional roller chain and sprocket 3.zinc surface ... have experience on any the sprocket standard (ANSI/ASA,KANA,ISO,DIN,BS and so on), and now we have build large ... welcome OEM inquires.Materials: carbon steel, stainless steel Standards: ANSI, DIN, ISO, and BS Type: DIN766, DIN763, DIN5687, DIN82056, DIN5686, DIN5685, 40 ...