... Shaft, Stabilizer, Flange, Coupling, BOP Body, Tube Plate, Roller Forgings, Ring Forgings, Gear Blank, Gear Wheel Materialsstructural steel, ... in various process conditions QA DOC Chemical Composition Report, Mechanical Properties Report, UT Report, Heat Treatment Report, ... quality control systemSo,we can achieve Competitive price with good qualit,low MOQ and short lead time OEM or ODM High Quality ...