F51 Duplex Steel Flanges

There are two main 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 Japanese JIS tube flanges, but they are generally only used in public works in petrochemical installations and have less impact internationally. A brief introduction of each country's pipe flanges is given below:

1. European system flange 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, British and French pipe flange standards, the two countries have two casing flange standards.

To sum up, the international standard of pipe flanges can be summarized as two different and non-interchangeable pipe flanges system: a European pipe flanges 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, the standard is actually the United States and Germany two sets of pipe flange combined into the pipe flange standard
 

Parameter (Specification) of F51 Duplex steel flanges 

1.Special design available
2.Design:  welding neck, slip on, blind, socket welding, threaded, lap-joint
3.Pressure: 150#, 300#, 600#,900#,1500#, 2500#
4.Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. SCHXXS
5.Production with anneal solution for stainless performance
6.Size range:  1/2" to 80"  DN15 to DN2000

Product Name	F51 Duplex steel flanges
Material	304/304L, 316/316L,321, 2520/310s, 2205/S31803,S32760,904lL
Standard	ASME, ANSI, JIS, DIN
Package	wooden pallet，seaworthy plywooden case,

Production Standards editor of F51 Duplex steel flanges  

National standard: GB/T9112-2010 (GB9113•1-2010 ~ GB9123•4-2010)
Chemical Industry standard: HG5010-52 ~ HG5028-58, HGJ44-91 ~ HGJ65-91, HG20592-2009 series, HG20615-2009 series
Mechanical standard: JB81-59 ~ JB86-59, JB/T79-94 ~ JB/T86-94, JB/T74-1994
Pressure vessel standards: JB1157-82 ~ JB1160-82, NB/T47020-2012 ~ NB/T47027-2012, B16.47A/B B16.39B16.

F51 Duplex steel flanges Types and sizes