Slip On Flange The slip on flange is a part that connects pipes with each other and is connected to the pipe end. There are holes on the welding flange, and the bolts make the two flanges tightly connected. Seal with gasket. Welded flange is a kind of disk-shaped parts, which is the most common in pipeline engineering. There are mainly two international pipe flange standards, namely, the European pipe flange system represented by German DIN (including the former Soviet Union) and the American pipe flange system represented by American ANSI pipe flange. In addition, there are JIS pipe flanges in Japan, but they are generally only used in public works in petrochemical plants and have little international impact. Now, the pipe flanges of various countries are introduced as follows: Welding neck flange (1) European system pipe flanges represented by Germany and the former Soviet Union (2) American system pipe flange standard, represented by ANSI B16.5 and ANSI B 16.47 (3) The British and French pipe flange standards have two casing flange standards respectively. To sum up, the internationally accepted pipe flange standards can be summarized as two different and non interchangeable pipe flange systems: a European pipe flange system represented by Germany; The other is the American pipe flange system represented by the United States. Ios7005-1 is a standard issued by the international organization for Standardization in 1992. In fact, this standard is a pipe flange standard that combines two series of pipe flanges from the United States and Germany. Relevant standards Hg20593-2009 hg20615-2009 national standard: GB/t9119-2000 GB/t2555-81 Ministry of machinery standard: JB/t81-94 JB/t74-94 JB/t75-94 Marine Standard: CB m1001-81] service pressure b]pn0.25mpa, pn0.6mpa, PN1.0MPa, PN1.6MPa, PN2.5MPa, PN4.0MPaSlip On Flange website:http://www.sy-exports.com/slip-on-flange/