Duplex Stainless Steel Flanges A182 GR.F51 Blind Flange 300# ASME B16.5

Duplex Stainless Steel Flanges A182 GR.F51 Blind Flange 300# ASME B16.5

We are a fast growing organization, engaged in manufacturing, supply and export of welding neck flanges,

industrial weld neck flanges and forged flanges. Our weld neck flanges are drilled with the wall thickness

of flange having the same dimensions of pipe. Flanges for heavier pipes have smaller bore, while flanges

of lighter pipes have larger bore. These weld neck flanges, industrial weld neck flanges, forged flanges are

normally used for high-pressure, cold or hot temperature.

The formal name of blind disk is Flange cover, and some are also called blind flanges or pipe plugs. It is a

flange without a hole in the middle, which is used to plug the pipe opening. The function is the same as that

of the head and cap, except that the blind seal is a removable sealing device, and the seal of the head is

not ready to be opened. There are many types of sealing surfaces, including planar, convex, concave and

convex surfaces, tongue and groove surfaces and ring connection surfaces. Materials include carbon steel,

stainless steel, alloy steel, copper, aluminum, PVC and PPR.

The blind plate is mainly used to completely isolate the production medium to prevent the shut-off valve from

being closed tightly, affecting production, and even causing accidents. The blind plate should be set in the part

where isolation is required, such as the equipment nozzle, before and after the shut-off valve or between two

flanges, and it is often recommended to use a figure 8 blind; Insert plates (round blinds) can also be used for

single-use parts such as pressing and purging.

Product Details:

Payment & Shipping Terms:

Product Range:

WNRF Flanges Size : 1/8" NB TO 48"NB.

WNRF Flanges Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.

Stainless Steel WNRF Flanges: ASTM A 182, A 240

Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750

Carbon Steel WNRF Flanges: ASTM A 105, ASTM A 181

Alloy Steel WNRF Flanges : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel Alloys WNRF Flanges : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276

Copper Alloys WNRF Flanges: Copper, Brass & Gunmetal

WNRF Flanges Standard
ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S : BS4504 , BS4504, BS1560, BS10

Value Added Services

Hot Dip Galvanizing , Epoxy Coating.

Test Certificate

Manufacturer Test Certificate as per EN 10204 / 3.1B