ANSI B16.5 Class 400 Forged Flanges

• Customization: Available
• Standard: ANSI, DIN, GB, JIS, GOST, BSW
• Material: Stainless Steel
• Model NO.: ANSI B16.5 Class 400
• Manufacturing Way: Forging
• Transport Package: Plate
• Trademark: SHUNFU
• Origin: China
• Production Capacity: 800000PCS/Year

Product Description

ANSI B16.5 Class 400 Forged Flanges

Nom. Pipe Size	O	T	TJ	R	X	#/Dia of Holes^a	Bolt Circle Dia	B	B2^b	B3	H	L	L2	L3^c	r	D	Thr
½	3.75	0.56	1.38	1.50	4-0.63	2.62	0.88	To be specified by Purchaser.	0.90	0.84	0.88	2.06	0.88	0.12	0.93	0.38	0.62
¾	4.62	0.62	1.69	1.88	4-0.75	3.25	1.09		1.11	1.05	1.00	2.25	1.00	0.12	1.14	0.44	0.62
1	4.88	0.69	2.00	2.12	4-.075	3.50	1.36		1.38	1.32	1.06	2.44	1.06	0.12	1.41	0.50	0.69
1¼	5.25	0.81	2.50	2.50	4-0.75	3.88	1.70		1.72	1.66	1.12	2.62	1.12	0.19	1.75	0.56	0.81
1½	6.12	0.88	2.88	2.75	4-0.88	4.50	1.95		1.97	1.90	1.25	2.75	1.25	0.25	1.99	0.62	0.88
2	6.50	1.00	3.62	3.31	8-0.75	5.00	2.44		2.46	2.38	1.44	2.88	1.44	0.31	2.50	0.69	1.12
2½	7.50	1.12	4.12	3.94	8-0.88	5.88	2.94		2.97	2.88	1.62	3.12	1.62	0.31	3.00	0.75	1.25
3	8.25	1.25	5.00	4.62	8-0.88	6.62	3.57		3.60	3.50	1.81	3.25	1.81	0.38	3.63	0.81	1.38
3½	9.00	1.38	5.50	5.25	8-1.00	7.25	4.07		4.10	4.00	1.94	3.38	1.94	0.38	4.13	….	1.56
4	10.00	1.38	6.19	5.75	8-1.00	7.88	4.57		4.60	4.50	2.00	3.50	2.00	0.44	4.63	….	1.44
5	11.00	1.50	7.31	7.00	8-1.00	9.25	5.66		5.69	5.56	2.12	4.00	2.12	0.44	5.69	….	1.69
6	12.50	1.62	8.50	8.12	12-1.00	10.62	6.72		6.75	6.63	2.25	4.06	2.25	0.50	6.75	….	1.81
8	15.00	1.88	10.62	10.25	12-1.12	13.00	8.72		8.75	8.63	2.69	4.62	2.69	0.50	8.75	….	2.00
10	17.50	2.12	12.75	12.62	16-1.25	15.25	10.88		10.92	10.75	2.88	4.88	4.00	0.50	10.88	….	2.19
12	20.50	2.25	15.00	14.75	16-1.38	17.75	12.88		12.92	12.75	3.12	5.38	4.25	0.50	12.94	….	2.38
14	23.00	2.38	16.25	16.75	20-1.38	20.25	14.14		14.18	14.00	3.31	5.88	4.62	0.50	14.19	….	2.50
16	25.50	2.50	18.50	19.00	20-1.50	22.50	16.16		16.19	16.00	3.69	6.00	5.00	0.50	16.19	….	2.69
18	28.00	2.62	21.00	21.00	24-1.50	24.75	18.18		18.20	18.00	3.88	6.50	5.38	0.50	18.19	….	2.75
20	30.50	2.75	23.00	23.12	24-1.62	27.00	20.20		20.25	20.00	4.00	6.62	5.75	0.50	20.19	….	2.88
22	33.00	2.88	25.25	25.25	24-1.75	29.25	22.22		22.25	22.00	4.25	6.75	6.00	0.50	….	….	--
24	36.00	3.00	27.25	27.62	24-1.88	32.00	24.25		24.25	24.00	4.50	6.88	6.25	0.50	24.19	….	3.25

Dimensions are in inches.
(a)- Bolt hole diameter 1/8 in. larger than bolt diameter.
(b)- Standard bore dimensions provided. See bolt chart for other wall thicknesses.
(c)- This dimension is commonly associated with "true" lap joints. Industry standard is to make to the slip on length through the hub.
 

We provides:

1.  ANSI/ASME FORGED FLANGES
2. MSS-SP-44 FLANGES/ANSI B 16.47 SERIES A
3.  API TYPE 6A - RTJ Face Flanges
4.  API-605 FLANGES/ANSI B 16.47 SERIES B
5.  A.G.A. ORIFICE UNIONS - Furnished with or without Hardware.
6.  ASME BOILER CODE FLANGES
7.  CL. 125 LIGHTWEIGHT FLANGES - For low pressure applications.
8.  PLATE FLANGES - From 1/4″ thru 8″ Thick, Including AWWA C-207,and all other special designs.
9.  ANSI LONG WELDNECKS & SPECIAL BODY CONNECTORS, HB, E, I1, I2, I3 and CUSTOM
10.  STUDDING OUTLETS (pad flanges) - flat bottom or radiused to fit
11.  SPECTACLE BLINDS - (line blinds, paddle spacers/blinds)
12.  DIN FLANGES
13.  JIS FLANGES
14.  Special Ring Flanges

 

Materials:

1.  CARBON STEEL - ASTM/ASME SA-105, A-350 LF-2, LF-3, A694, SA-516-70, A36
2.  CHROME ALLOYS - A-182-F-1, F-5, F-6, F-9, F-91, F-11, F-12, F-22
3.  STAINLESS STEEL - A-182 - F-304, Dual Grade 304/304L, Dual Grade 316/316L, 316, 304H, Dual Grade 304/304H, Dual Grade 316/316H, 316H, 309,
4.  310, 317L, 321, 347, 347H, 904L,
5.  Alloy 20, many other H grades
6.  ALUMINUM - 3003, 6061, 5083 and other grades upon request.
7.  HASTALLOY - B-2, C-276, G, X, C-22
8.  INCONEL - 600, 601, 625, 718
9.  INCOLLOY - 800, 825, 800H, 800HT
10.  MONEL - 400
11.  COPPER - 90/10 (C70600), 70/30 (C71500)
12.  Duplex - F51/2205, F53/2507
13.  TITANIUM - Gr2, Gr12

 

COMPETING IN A GLOBAL MARKETPLACE

We has the knowledge of industrial flanges that will help you to achieve your cost goals. Our goal is to do so much more than just provide flanges. You can count on us with your questions and we are happy to make sure you are getting the correct parts for your job. We can guide you through the entire process from planning and requisition to logistics and traceability. 
 

SATISFYING CUSTOMER DEMANDS

We are the leader for Industrial Flanges of all kinds. We take pride in our operations and offer to help you with all your flange needs. Please contact Texas Flange's Industrial Flange Sales department via email, our toll free phone number or at our mailing address. Also, please enjoy a copy of our online flange catalog or learn more about our lead times on industrial flanges.
We wants your flange inquiry and will give you your flange quote quickly!
 

THE PARTS YOU NEED, WHEN YOU NEED THEM

We're here to help with your flange needs. We has been in the business of precision flange manufacturing since 2000, and we're confident we can help you find a solution more quickly, affordably, and with greater expertise than the competition. We'd love to learn more about your project today!

STOCKING PROGRAM

Size Range | 1/2″ - 36″ NPS (Larger sizes available upon request)
Classes | ASME/ANSI 150, 300, 600, 900, 1500, 2500
Stainless Steel Grades | 304, 304L, 316, 316L, 316L, 317L, 321 , 347 *
Special Alloys | 2205, 254SMo, Monel, Inconel *
Chrome Moly | P5, P9, P11, P22, P91 *
Standards | ASTM / ASME / ANSI
*-Not all grades available are listed or have a full inventory managed
 

GENERAL INFORMATION

ASME/ANSI B16.5 & B16.47 - Pipe Flanges and Flanged Fittings
The ASME B16.5 - Pipe Flanges and Flange Fittings standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. The standard includes flanges with rating class designations 150, 300, 400, 600, 900, 1500, and 2500 in sizes NPS 1/2 through NPS 24, with requirements given in both metric and U.S units. The Standard is limited to flanges and flanged fittings made from cast or forged materials, and blind flanges and certain reducing flanges made from cast, forged, or plate materials.

Pipe Flanges and Flange Fittings in sizes over 24″ are to be referenced under ASME/ANSI B16.47.
 

FLANGE TYPES

Slip-on Flanges

The slip-on flange is the most common flange in which Unified Alloys stocks a full line of ANSI Class 150, 300, 600,1500 & 2500 up to 24″ NPS.  We stock stainless grades F304/304L,  316/316L, F317/317L, F321, F347 and duplex grade 2205 ( in which they are "slipped over" the end(s) of pipe or the end(s) of a fitting, and welded in position. On the pipe or fitting, they are set so the inserted end of the pipe or fitting is set back to the wall plus 1/8" allowing for a fillet weld to be made inside the flange, and back (outside) of the flange is also welded with a fillet weld.

Slip-On flange also exists as a reduction where a larger slip-on flange blank is cut out to accommodate a smaller connection size. The slip-on reducing flange is used when reducing the line size in areas where there are space limitations.
 

Weld Neck Flanges:

Weld neck flanges are visually different from other flange types by their long tapered hub and smooth transition of thickness up to where the butt weld joins to a pipe or a fitting. A full penetration weld is utilized to connect it to the pipe or fitting. The tapered hub provides reinforcement, and the added length helps for resistance to dishing during the welding process. Weld neck flanges are typically used in severe service conditions, whether loading conditions are substantially constant or fluctuate between wide limits.
 

Lap Joint Flange:

A Lap Joint Flange is used in conjunction with a stub end where the flange is slipped over the stub end fitting which is then connected to either to pipe or another fitting by welding or other mechanical means.

The flange itself is not fixed and is left loose for proper alignment with the connection it is matching to. The benefits of this assembly is if there is frequent or rapid disassembly and assembly during maintenance of the piping system. The ability to spin and position the flange compensates for any misalignment of the bolt holes during reassembly.
 

Backing flange:

A backing flange does not have a raised face, and typically is used with backing rings which are a cheaper version of a stub end with similar installation benefits of the lap joint / stub end pairing.
 

Threaded (Screwed) Flange:

Threaded flanges are bored out initially to match a specific pipe inside diameter. The reverse side of the flange is then machined with the desired tapered sized pipe thread. Threaded flanges are primarily used to make flanged joints in the smaller bore pipe size ranges.
 

Socket Weld Flanges:

Socket Weld flange looks like a Slip-On flange, however the key difference is the Socket Weld flange is machined out to match a specific pipe size socket to take the pipe O.D. Once the pipe is set in place, the back side of the flange and pipe is fillet welded to finalize the connection. Socket weld flanges are primarily used to make flanged joints in the smaller bore pipe size ranges.
 

Blind Flanges:

Blind flanges are made to the sizing specification as all flanges, but there is no center hole or place to connect piping components. The flange is typically used to close or block the end of a piping system.

Forged flanges are stocked up to 24″ NPS in accordance to ASTM A / ASME SA182 and ASME B16.5 rating class 150, 300, 600, 1500 and 2500. Standard stainless material grades F304L, F316L are stocked with F321, F347 along with Duplex UNS31803 (2205) and Chrome Moly grades F5, F9 and F11 Material grades ASTM 321, 347 along with Duplex UNS31803 (2205) and Chrome Moly P5, P9 and P11 stocked in industry tailored size ranges.. Carbon Steel in Accordance to ASTM A105.

Cast flange products are stocked in 150 class T2 coated steel.