... ISO9001:2008,TUV 2010, PED20 hight quality competitive Weld Neck Carbon Steel Flange:1.Type:Alloy flange2.Material:Alloy ... 6,PN2.5,PN4.0,PN6.3,PN10.0,PN16.0Mpa,PN2.0,PN5.0,PN11.0,PN15.0,PN26.0,PN42.0MPa.MarkingAccording to customers’ special requirementsSizeFrom 1 ... Process: 1.Material 2.Material Sectioning 3. Heating 4. Forging 5. Heat Treatment 6.Cutting7. Inspection hight quality competitive ...