ANSI B16.48 2inch RF 600# A105 Spectacle Blind Flange
Followings are the definition, information and application of various types of flanges:
Spectacle blind flange (spectacle flange) is also called figure-8 blind flange, it is made of two pieces metal discs which are joint together by a part of steel handle. The spectacle blind flange is a safety device used to isolate a section of pipeline or equipment when they need to be inspected or removed from piping system. It is not like a valve, the spectacle blind flange is a permanent or long term isolation block.
Standard: ANSI/ASME B16.5, ANSI/ASME B16.47, BS4504, BS3293, EN 1092, DIN2631,DIN2632,DIN2633, DIN 2634, DIN2635, DIN2636, DIN2637, DIN2638, JIS B2220, SABS / SANS 1123 , GOST / ГОСТ 12821-80 Flange, MSS SP-44 FLANGE, API 6A, 6B, 6BX weld neck FLANGE, ISO 7005 Weld neck flange. NFE 29203 Weld neck flange, KS B1503 , UNI 2280-67 ,UNI 2281-67 ,UNI 2282-67 ,UNI 2283-67 , UNI 2284-67, HG20595,AS2129.
Size: 1/2” – 160”. DN15 – DN4000 mm
Pressure: Class 75, Class125, Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500,Class 2500,3000 PSI, 5000 PSI, 10000 PSI, 20000 PSI.
PN2.5, PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160
5K, 10K, 15K, 20K, 30K.
Carbon steel: ASTM A105, A181, ASTM A516 GR.60, GR.70, ASTM A694 F42, F46, F52, F56, F60, F65, F70, ST37, ST45.8, C22.8, S235, S235JRG2, P235GH, P245GH, P250GH, P265GH, P355GH, S355J2, 16MN, 20MN, Q235, 20#, CT20, SS400.
Stainless steel: ASTM A182 F304, F304L, F316, F316L, F321, F321H, F304H, F316H, F347H, 1.4301, 1.4306, 1.4401, 1.4404, 1.4541, 1.4571, SUS304, SUS316.
Alloy Steel: ASTM A350 LF2, CL1/CL2, ASTM A182 F5, F9, F11, F12, F22, F91.
Duplex Steel: S31803 / F51 / S32205 / F60 / 1.4462
Super Duplex: S32750 / F53 / 1.4410 / S32760 / F55 / 1.4501
Sealing face: Raised Face(RF), Flat Face(FF), Ring Type Joint(RTJ).
Flange face finishing, MSS-SP-6, such as: Stock finishing, Spiral serrated finishing, concentric serrated finishing, smooth finishing etc.
Coating: Black paint, Yellow paint, Vanish oil
Packing: Wooden case, Plywood case, Pallet.
Marking: MSS-SP-25, necessary information of flange specification, Customized marking is available.
Hebei Haihao flange ,as one of the earliest flange manufacturer, has strong experience in flange production and inspection and a complete set of equipments,including advanced cutting,forging,machining,drilling machines and professional testing & inspection instruments.Besides these facilities , we also have a expertised engineers and workers which are expericed in flanges . our company received the certificate of ISO 9001 quality assurance system registration. We also acquired the approved certificates of other world class quality notify body like API, ISO, PED,ABS,BV etc.Furthermore,we also established a good relationship with many professioanl Third Party Inspection company, such as the SGS, BV, LR, ABS etc.
Hebei haihao group is experienced and professional in the designing and production of the spectacle blind flange, if you have any request for the spectacle blind flange, welcome to contact us for quotation or technical data sheet.