Hydraulic Cylinders products from Yinda Petroleum Machinery Co., Ltd..
This hydraulic cylinder is made of high-quality alloy steel 35CrMo or 40CrMo. The inner wall hardness reaches HB285-330, with mechanical properties of Sigma B ≥ 850/MPC, Sigma S ≥ 670/MPC, δ ≥ 15%, and Talent ≥ 13%.