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Ring joint gaskets are manufactured by solid materials through forging,heat treatment, high-precision processing by CNC lathe according to ASME B16.20 and API 6A standard,also can be produced by drawing and other special request . It is available in R,RX,BX styles, and R type can be manufactured into oval and octagonal cross section,it is primarily used in oil, gas and petrochemical, offshore oilfield industries,such as valve,flange,pipework assemblies,high integrity vessel joint and so on , applicable to a variety of high-temperature ,high pressure,corrosive work conditions.

Available materials

Material                                            Identification Code                      Maximum Hardness 
(BRINELL)                                       T(℃)

Soft Iron                                            D                                                           90                                530

Low Carbon Steel                           S                                                         120                                530

4C6% Chrome 1/2% Mo               F5                                                        130                               500

304 Stainless Steel                       SS304                                                 160                                750

316 Stainless Steel                       SS316                                                 160                               750

321 Stainless Steel                       SS321                                                 160                                750

347 Stainless Steel                       SS347                                                 160                               750

410 Stainless Steel                       SS410                                                 170                               500

31254 Duplex Steel                       DS31254                                            160                               650

Monel                                                Monel                                                  140                               600

Inconel 825                                      Inconel825                                         160                              1000

Inconel625                                       Inconel625                                         180                               1100

Special materialsF11,F55,Duplex steel 31803,Alloy800 etc.


Specials types
Special types is available according to the drawing which client provide.