Detailed Description  I specializes in selling series of pipe flange.  Name Neck butt welded steel pipe flange Sealing surface type FF RF M FM T G Pressure: PN1.0-1.6 DN10-DN2000 Pressure: PN2.5 DN10-DN1000 Pressure: PN4.0 DN10-DN600 Pressure: PN6.3-10.0 DN10-DN400 Pressure: PN16.0 DN10-DN300 Pressure: PN25.0 DN10-DN250 Material Carbon Steel: A3 Q235 20 # 20G ST45.8 A105 A106  Alloy Steel :16Mn 12Cr1MoV 10MCrMo910 15CrMo A335P11 A335T91  Stainless steel: 1Cr18Ni9Ti (18-8) 0Cr18Ni10Ti (321) 0Cr18Ni9 (304) 00Cr19Ni10 (304L) 0Cr17Ni12Mo2 (316) 00Cr17Ni14Mo2 (316L) Standard National Institute of Standards \ standard power \ chemical standards \ standard in the oil \ oil and natural gas standards \ standard German \ Japanese standards \ European standards \ standards of the United States Main application The petroleum industry, the chemical equipment, the pipeline net of boiler and steam, the pipeline of gas long transportation. steel pipe fittings of oil, nature gas, chemical, city fuel gas, oil storage and transportation, etc.