• Size: 1/2”-60”
• Design Standard: ANSI, JIS, DIN, BS,GOST
• Material: Stainless Steel (ASTM A182 F304/304L, F316/316L,F321)
• Normal Pressure: CLASS 150, CLASS 300, CLASS 600, CLASS 900,CLASS 1500, CLASS
2500, CLASS 3000
• Face Type: F.F., R.F., R.T.J.
The majority of blind flanges are of basic constitution, require minimal machining compared to other flanges, and weigh more than most options given the lack of a bore. Although these are typically provided as blanks to match up to slip on and weld neck flanges, we offer them custom machined as well. Popular alterations include NPT threads in the center, as well as custom bore holes to function as slip on flanges without hubs.
Spectacle Blinds are another somewhat uncommon but important application for capping pipelines. A picture of a spectacle blind is shown below. The name comes from the fact that the assembly looks like eyeglasses, or “spectacles”. These are normally used in piping systems, usually between two standard flanges, and are designed to block off a section of pipe. However these are used where the customer needs to block this connection off somewhat frequently. They are typically used where there is piping connected to both flanges, where you cannot simply drop a standard blind flange in, because the flanges cannot be pulled apart far enough to drop in the blind flange.
China leading Blind Flange manufacturer (www.dingshengflange.com)
One-stop OEM and manufacturing for Blind Flange in Stainless Steel