Audited Supplier
ANSI, DIN, GB, JIS, GOST, BSW
Blind Flange
Stainless Steel 304/316/304L/316L
Round
Welding
RF
Forging
ISO9001-2015, CE
Bl
RF/FF
Pn2.5 to Pn160
Stainless Steel Flange
Cold Press
Mirror Polish, Matt Finish, Sand-Blasting
Oil Gas Water Industrial
Forging+Machining+Heating Treatment
Malleable Cast Iron Threaded Flanges
WELFLOW
Protect Cap, PP Bag & Plywood Cases
DN8(1/4") to DN1000(40")
China
7307210000
Product Description
Stainless Steel Blind Flange BLRF, BLFF
BL type is used to seal off a section of pipe or a nozzle on a vessel that is not in use. Unlike other flanges that are used to connect pipes, a blind flange is flat and does not have a bore or hole in the center. This design effectively blocks off the flow of fluid through a pipeline, allowing for maintenance, inspection, or system modifications.
Stainless Steel Forged Flanges ANSI, BS, JIS, EN, DIN Standard
Flanges are external rims, edges, ribs, or collars that connect pipes, valves, pumps, and other equipment to form a piping system. They are typically circular and come with holes that allow them to be bolted together. Flanges are often used to facilitate easy assembly and disassembly of piping systems, and they can also be used for inspection, modification, or cleaning purposes.OTHER FLANGE TYPES
Product Name | weld neck flange, slip on flange, blind flange, tube sheet, threaded flange, socket weld flange, plate flange, spectacle blind, LWN, Orifice flange, anchor flange. (En1092-1 PN10 Pn16 DN900 DN750 Plate Steel Stainless Steel Flange) |
OD | 15mm-6000mm |
Pressure | 150#-2500#,PN0.6-PN400,5K-40K,API 2000-15000 |
Standard | ANSI B16.5,EN1092-1, SABA1123, JIS B2220, DIN, GOST,UNI,AS2129, API 6A, etc. |
Wall thickness | SCH5S, SCH10S, SCH10, SCH40S,STD, XS, XXS, SCH20,SCH30,SCH40, SCH60, SCH80, SCH160, XXS and etc. |
Material | Stainless steel: A182F304/304L, A182 F316/316L, A182F321, A182F310S, A182F347H,A182F316Ti, A403 WP317, 904L, 1.4301,1.4307,1.4401,1.4571,1.4541, 254Mo and etc. Carbon steel: A105, A350LF2, Q235, St37, St45.8, A42CP, E24 , A515 Gr60, A515 Gr 70 |
Duplex stainless steel: UNS31803, SAF2205, UNS32205, UNS31500, UNS32750 , UNS32760, 1.4462,1.4410,1.4501 and etc. Pipeline steel: A694 F42, A694F52, A694 F60, A694 F65, A694 F70, A694 F80 etc. | |
Nickel alloy: inconel600, inconel625, inconel690, incoloy800, incoly 825, incoly 800H, C22, C-276, Monel400, Alloy20 etc. Cr-Mo alloy: A182F11, A182F5, A182F22, A182F91, A182F9, 16mo3 etc. | |
Application | Petrochemical industry;avation and aerospace industry;pharmaceutical industry; gas exhaust;power plant;ship building;water treatment,etc. |
Advantages | ready stock,faster delivery time;available in all sizes,customized;high quality |
PLATE FLANGE(PL)
This type is a flat, circular disk that is welded onto the end of a pipe and connects to another flange or fitting. Unlike more complex flanges, it doesn't have a raised face or a lip for a gasket. Plate flanges are generally used in less demanding applications where ease of assembly and cost are more important than high pressure and temperature resistance.SLIP-ON FLANGES(SO)
SO type are designed to slide over the end of a pipe and are then welded in place. They are easier and more economical to install compared to more robust types like weld neck flanges. Typically used in lower-pressure applications, slip-on flanges are popular in industries like water treatment and petrochemicals. They offer a convenient but less durable alternative for connecting pipes in a system.
WELD NECK FLANGES(WN)
WN type is a type of flange that is designed to be joined to a piping system by butt welding. Unlike other flanges that can be attached to the pipe in various ways, a weld neck flange has a long tapered hub that goes over the end of the pipe. This tapered hub provides an ideal welding area and offers a tight, high-integrity seal that prevents leaks and ensures durability under high stress.
SOCKET WELD FLANGES(SW)
SW type are used in applications requiring a strong but easily disassemblable connection. These flanges feature a socket into which the pipe is inserted and then fillet-welded to secure it in place. The design allows for a smooth bore and better fluid or gas flow inside the piping system. Socket weld flanges are often used in small-diameter, high-pressure applications such as hydraulic and steam lines.LOOSE FLANGE(LAP JOINT FLANGE)
A Loose Flange, also known as a Lap Joint Flange, consists of a stub end welded to the pipe and a backing flange that slides over it. This design allows for easy maintenance and is often used in low-pressure applications where bolt-hole alignment or frequent system access is required. The flanges can be made from materials like carbon steel or stainless steel, depending on the application.
| QUESTION? | ANSWER |
| 1. Are you a factory? | Yes, Welflow is a factory located in Wenzhou, Zhejiang, China. |
| 2. Do you have any MOQ requirements? | It is not limited to MOQ but includes the difference in unit price. |
| 3. Payment Terms | Typically, 30% T/T is used as a deposit, and 70% against a copy of BL/ Or balance L/C at sight. |
| 4. Nearly Sea Port | Ningbo or Shanghai Port |
| 5. Terms: | FOB Ningbo/Shanghai, CIF, FCA, etc. |
| 6. Delivery Time: | Typically, it is 30-35 days after receiving the deposit payment. However, almost all of the items we have stock in 304. |
| 8. Could you accept marking our logo on the products? | Yes, air pump typing or laser marking is okay. |
| 9. Do you have Material Certificates? | If required, Each item will be laser marked with Heat NO and the material certificates. |
| 10. How do you deal with customer complaints, such as quality issues? | This is an issue we take very seriously. As long as it is confirmed to be a quality issue, we will take full responsibility. 1. exchange or refund is acceptable. It mainly depends on how you need to deal with it. |
FOR FLANGE FACES
FLAT FACE: A flat surface without elevation is used mainly for low-pressure and non-critical applications.
RAISED FACE: Features a raised area around the bore, common in many high-pressure applications and allows for a variety of gasket types.
RING-TYPE JOINT (RTJ): Features a grooved face that holds a metal ring gasket, used in high-pressure and high-temperature applications.
LAP JOINT: Often used with a matching stub end, this face allows for easy alignment and is used primarily in systems that require frequent maintenance.
TONGUE AND GROOVE: One flange has a raised ring (tongue), and the other has a depressed ring (groove); they fit into each other to form a tight seal.
MALE AND FEMALE: Similar to tongue and groove but more exaggerated; the male flange has an additional lip, and the female flange has a corresponding recess.
1.Industry Valves
Ball Valve
3 Way Ball Valve
1 PC Male/Female Thread Ball Valve
2 PC Male/Female Thread Ball Valve
3 PC Male/Female Thread Ball Valve
1 PC Flange/Welding/Union Ball Valve
2 PC Flange/Welding/Union Ball Valve
3 PC Flange/Welding/Union Ball Valve
Globe Valve
Male/Female Thread Globe Valve
Flange Globe Valve
Gate Valve
Male/Female Thread Gate Valve
Flange Gate Valve
Check Valve
Wafer Check Valve
Spring Check Valve
Dual Disc/Plat Wafer Check Valve
Swing Check Valve
Flange Check Valve
Butterfly Valve
Angle Seat Valve
Pneumatic Ball Valve
Pneumatic Angle Seat Valve
Electric Ball Valve
Electric Angle Seat Valve
Y Strainer/Filter
2.Industry Pipe Fittings
welded/thread Elbow
Tee
Cross
Cap
Pipe Hanger
Hose Joint
Unions
Quick connector
Quick coupling
Ferrule
Reducer
Socket
Bend
Plug
Bushing
Nipple
Y-Tee
Y-Shaped
Lateral-Tee
Flange\
3 .Sanitary valve
Sanitary Butterfly Valves
Sanitary Check Valves
Sanitary Ball Valvess
Sanitary Reversal Valve
Sanitary Diaphragm Valves
Sanitary Sample Valves
Sanitary Safety Valves
Sanitary Control Valves
Sanitary Relief Pressure Valves
4. Sanitary Pipe Fittings
Sanitary Elbow
Sanitary TeeSanitary Reducer
Sanitary Cross
Sanitary Triclamp Ferrule
Sanitary Cap
Sanitary Pipe Hanger
Sanitary Tank Cleaning Ball
Sanitary Hose Joint
Sanitary Unions
Sanitary Sight Glass
Sanitary Strainer
