Operational condition of Hydro-treating reactors are very severe, thus high-temperature service CrMo low alloy steel shall be used as base material and SS cladding or weldoverlay is also required because of hydrogen. Very sensitive control of all working procedure, especially welding is key factor of good quality and on-time delivery. Only few capable manufactures can supply this reactor with required quality on time. We are very proud we are one of them, even better we can supply it with competitive price.