... 1.Type:Carbon Steel Flange 2.Material:Carbon steel 3.Certification:ISO9001:2008,TUV 2010, PED20 Weld Neck ... DIN2627-2638,DIN2673 ,DIN86029,DIN86030BSBS10,BS4504 SANI1123 1000/3 1600/3 2500/3 T/D T/E T/FJIS5K,10K,16K,20K ... PN1.0,PN1.6,PN2.5,PN4.0,PN6.3,PN10.0,PN16.0Mpa,PN2.0,PN5.0,PN11 ... and third party Production Process: 1.Material 2.Material Sectioning 3. Heating 4. Forging 5. Heat Treatment 6.Cutting7. ...