Threaded Flanges

Threaded Flanges

Screwed - Threaded Flanges ASME B16.5 Manufacturers, Exporters & Suppliers in India as well as abroad.

304/304L Screwed-Threaded Flanges, 310/310S Screwed-Threaded Flanges, 316/316L Screwed-Threaded Flanges, 317/317L Screwed-Threaded Flanges, 321/321H Screwed-Threaded Flanges, 347/347H Screwed-Threaded Flanges, 446 Screwed-Threaded Flanges.

Stainless Steel, Hastelloy, Titanium, Duplex steel, Carbon Steel, Copper Nickel Alloy, Alloy Steel, Alloy 20, Monel & Inconel Threaded Flanges.

Threaded Flanges are similar to a slip-on flange in outline, only the bore in this is threaded, thus it enables assembly without welding it. This Threaded Flange is used mainly in low pressure piping systems. The flange can be welded around the joint after assembly.

Material of ConstructionStandard Grades
Stainless Steel Threaded Flanges ASTM A182, A240  
201, 202, F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316Ti, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L
Carbon Steel Threaded Flange ASTM A105 Gr. F70,65,60,56,52,46,42
Alloy Steel Threaded Flanges ASTM A182 F91, F22, F11, F9, F5, F1
Nickel Alloy Threaded Flanges ASTM SB160,  SB162, SB472,
SB564
Nickel 200 (UNS No. N02200), Monel 500 (UNS No. N05500), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Inconel 800 (UNS No. N08800), Inconel 600 (UNS No. N06600), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Inconel 825 (UNS No. N08825), Inconel 625 (UNS No. N06625), Alloy 20 (UNS No. N08020). 
Copper Alloys Threaded Flanges ASTM SB151, SB152, SB 61,  SB62 UNS No. C 70600 (Cu-Ni 90/10), 10200, 10300, 10800, 12000, 12200,UNS No. C 10100, C 71500 (Cu-Ni 70/30)
Low Temperature Carbon Steel Threaded Flanges ASTM A350 LF3, LF2
Duplex Steel Threaded Flanges ASTM A182, A240 
UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

 

Dimensional Tolerances of Threaded Flanges ASME B16.5 :

Outside Diameter
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm
Inside Diameter
within Limits on Boring Gauge
Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm
Drilling:
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle with Respect to Facing
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore
Same as forInside Diameter
Thickness
≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0
Length thru Hub
≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm