Materials: ASTM4145H, ASTM4145HMODStandards: ASTM, ASME, DIN, SIS and EURONORMApplication: well-head equipmentProcess: EF+LF + VD+VCProcess as follow: ingot, heat, forging, heat treatment (normalizing+ tempering), inspection, rough machining, UT, 2rd heat treatment, finishing machining, inspectionTest: 100% UT and MT testedWe purchase the steel ingot from well know and qualified steel mill in ChinaAll our forgings forged ratio >4.5, and guarantee a full time normalize and anneal process to make sure the grain size and cleanness degreeWe have a strict quality control system and complete management service system
