... Available material1.Stainless steel:SS201,SS202,SS302,SS303,SS304,SS316,410,420,430,etc.2.Steel:C45(K1045), ... standard, 100% whole range inspection through the production3inspection equipment: hardness test, torque test, salt spray endurance test, mechanical size ... 100% whole range inspection through the production.3inspection equipment: hardness test, torque test, salt spray endurance test, mechanical ...