What is Uni flange
UNI is the standard code for the Italian standard (Unifica zione Italian no), which was developed by the Italian Standards Association.
Leading UNI Flange Manufacturer LFDY flange pipe fitting co.,ltd supply UNI Flanges, DIN flanges, UNI forged Flange, UNI Flanges in forged steel, Stainless Steel, Carbon steel C22.8, RST37.2, S235JR, P235GH, P245GH, P250GH, ASTM A105, ASTMA182 F304 (1.4306), F304L(1.4307), F316(1.4404),F316L(1.4404), F321(1.4541) etc.
How many type of uni flange:
| UNI Forged Flanges | UNI High Hub Blinds Flanges |
| UNI Blind Flanges | UNI Spectacle Blinds Flanges |
| UNI Reducing Flanges | UNI Loose Flanges |
| UNI Orifice Flanges | UNI RTJ Flanges |
| UNI Socket Weld Flanges | UNI Screwed Flanges |
| UNI Slip On Flanges | UNI Weld Neck Flanges |
| UNI Flat Flanges | UNI Flange Facing Type & Finish |
| UNI Lapped Joint Flanges | UNI SORF Flanges |
| UNI SWRF Flanges | UNI Groove & Tongue Flanges |
| UNI Square Flanges | UNI Long Neck Weld Flanges |
| UNI Threaded Flanges | UNI Spades Ring Spacers Flanges |
| UNI Weld Neck Flanges Series A or B | UNI Ring Type Joint Flanges |
| UNI WNRF Flanges | UNI Weldo / Nipo Flanges |
| UNI Expander Flanges |
What is the material of Uni flange?
Stainless Steel UNI Flanges:
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Duplex & Super Duplex Steel UNI Flanges:
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Carbon Steel UNI Flanges:
ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
Low Temperature Carbon Steel UNI Flanges : ASTM A350, LF2, LF3
Alloy Steel UNI Flanges:
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Copper Alloy Steel UNI Flanges : ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Nickel Alloy UNI Flanges:
ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020)
Uni flange standard summary chart
| Description | Rated Pressure / Presión Nominal / Nenndruck (in bar) (1 bar = 14.5 psi) | ||||||||||||
| 1 | 2.5 | 6 | 10 | 16 | 25 | 40 | 64 | 100 | 160 | 250 | 320 | 400 | |
| DIN | |||||||||||||
| Blind Flanges | 6091 | 6092 | 6093 | 6094 | 6095 | 6096 | 6097 | 6098 | 6099 | ||||
| Flat flange for welding (slip-on) | 2276 | 2277 | 2278 | 6083 | 6084 | ||||||||
| Welding neck flanges | 2280 | 2281 | 2282 | 2283 | 2284 | 2285 | 2286 | ||||||
| Lapped flanges, Plain collars | 6088 | 6089 | 6090 | ||||||||||
| Loose flanges and rings for welding | |||||||||||||
| Loose flanges and rings with neck for welding | |||||||||||||
| Oval plain threaded flanges | |||||||||||||
| Oval flanges, with neck threaded | |||||||||||||
| Threaded flanges with neck | 2253 | 2254 | |||||||||||
| Long neck welding flanges | |||||||||||||
| Hubbed slip-on flanges for welding | |||||||||||||
What is Uni flange usage?
| Oil and Gas Pipeline Chemical Industry Plumbing Oil & Gas Industry Water Supply Systems Paper & Pulp Industry | Power Plant abrication Industry General purpose applications Food Processing Industry tructural Pipe Heat Exchangers |
