S type steel Agricultural Chains 1.material:40MN/A3 2.pitch:41.40mm 3.plate thickness:2.80mm 4.OEM is ok. S type steel Agricultural Chains 1.material:40MN/A32.pitch:41.40mm3.plate thickness:2.80mm4.color:natural.black.blue.yellow5.has taken measures to better antirust6.long-life duration and high strength7.pre-stretched and anti-fatigue8.produce as your sample or drawing9.sound quality,reasonable ...