Threaded Flanges

threaded flanges

YANHAO is a professional manufacturer of Steel Threaded Flanges integrating research and development, forging, manufacturing, sales, and service. We are manufacturing threaded flanges in various shapes, sizes, grades, and specifications with ANSI standards.

  • class 150
  • class 300
  • class 400
  • class 600
  • class 900
  • class 1500
  • Class 2500

ANSI B16.5 Class 150 Threaded Flanges

(a)All dimensions are in inches.
(b)These flanges will be furnished with a 1/16″ raised face unless otherwise specified.For more alternate flange facings, please click here!

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Hub Diameter (X) Thickness (T) Length Thru Hub (Y) Approximate Weight (lbs)
1/2 3.50 2.38 1.38 4 0.62 1.19 0.38 0.56 1
3/4 3.88 2.75 1.69 4 0.62 1.50 0.44 0.56 2
1 4.25 3.12 2.00 4 0.62 1.94 0.50 0.62 2
1 1/4 4.62 3.50 2.50 4 0.62 2.31 0.56 0.75 3
1 1/2 5.00 3.88 2.88 4 0.62 2.56 0.62 0.81 3
2 6.00 4.75 3.62 4 0.75 3.06 0.69 0.94 5
2 1/2 7.00 5.50 4.12 4 0.75 3.56 0.81 1.06 7
3 7.50 6.00 5.00 4 0.75 4.25 0.88 1.12 8
3 1/2 8.50 7.00 5.50 8 0.75 4.81 0.88 1.19 11
4 9.00 7.50 6.19 8 0.75 5.31 0.88 1.25 13
5 10.00 8.50 7.31 8 0.88 6.44 0.88 1.38 15
6 11.00 9.50 8.50 8 0.88 7.56 0.94 1.50 19
8 13.50 11.75 10.62 8 0.88 9.69 1.06 1.69 30
10 16.00 14.25 12.75 12 1.00 12.00 1.12 1.88 43
12 19.00 17.00 15.00 12 1.00 14.38 1.19 2.12 64
14 21.00 18.75 16.25 12 1.12 15.75 1.31 2.19 90
16 23.50 21.25 18.50 16 1.12 18.00 1.38 2.44 98
18 25.00 22.75 21.00 16 1.25 19.88 1.50 2.62 130
20 27.50 25.00 23.00 20 1.25 22.00 1.62 2.81 165
22 29.50 27.25 25.25 20 1.38 24.00 1.75 3.06 185
24 32.00 29.50 27.25 20 1.38 26.12 1.81 3.19 220

ANSI B16.5 Class 300 Threaded Flanges

(a)All dimensions are in inches.
(b)These flanges will be furnished with a 1/16″ raised face unless otherwise specified.For more alternate flange facings, please click here!

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Hub Diameter (X) Thickness (T) Length Thru Hub (Y) Approximate Weight (lbs)
1/2 3.75 2.62 1.38 4 0.63 1.50 0.50 0.81 2
3/4 4.62 3.25 1.69 4 0.75 1.88 0.56 0.94 3
1 4.88 3.50 2.00 4 0.75 2.12 0.62 1.00 3
1 1/4 5.25 3.88 2.50 4 0.75 2.50 0.69 1.00 4
1 1/2 6.12 4.50 2.88 4 0.88 2.75 0.75 1.13 6
2 6.50 5.00 3.62 8 0.75 3.31 0.81 1.25 7
2 1/2 7.50 5.88 4.12 8 0.88 3.94 0.94 1.44 10
3 8.25 6.62 5.00 8 0.88 4.62 1.06 1.63 13
3 1/2 9.00 7.25 5.50 8 0.88 5.25 1.12 1.69 17
4 10.00 7.88 6.19 8 0.88 5.75 1.19 1.82 22
5 11.00 9.25 7.31 8 0.88 7.00 1.31 1.94 28
6 12.50 10.62 8.50 12 0.88 8.12 1.38 2.00 39
8 15.00 13.00 10.62 12 1.00 10.25 1.56 2.38 58
10 17.50 15.25 12.75 16 1.13 12.62 1.81 2.56 81
12 20.50 17.75 15.00 16 1.25 14.75 1.94 2.82 115
14 23.00 20.25 16.25 20 1.25 16.75 2.06 2.94 165
16 25.50 22.50 18.50 20 1.38 19.00 2.19 3.19 190
18 28.00 24.75 21.00 24 1.38 21.00 2.31 3.44 250
20 30.50 27.00 23.00 24 1.38 23.12 2.44 3.69 315
22 33.00 29.25 25.25 24 1.63 25.25 2.56 3.94 370
24 36.00 32.00 27.25 24 1.63 27.62 2.69 4.13 475

ANSI B16.5 Class 400 Threaded Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Hub Diameter (X) Thickness (T) Length Thru Hub (Y) Approximate Weight (lbs)
1/2 3.75 2.62 1.38 4 0.63 1.50 0.56 0.88 2
3/4 4.62 3.25 1.69 4 0.75 1.88 0.62 1.00 3
1 4.88 3.50 2.00 4 0.75 2.12 0.69 1.06 4
1 1/4 5.25 3.88 2.50 4 0.75 2.50 0.81 1.12 5
1 1/2 6.12 4.50 2.88 4 0.88 2.75 0.88 1.25 7
2 6.50 5.00 3.62 8 0.75 3.31 1.00 1.44 9
2 1/2 7.50 5.88 4.12 8 0.88 3.94 1.12 1.62 13
3 8.25 6.62 5.00 8 0.88 4.62 1.25 1.81 16
3 1/2 9.00 7.25 5.50 8 1.00 5.25 1.38 1.94 21
4 10.00 7.88 6.19 8 1.00 5.75 1.38 2.00 26
5 11.00 9.25 7.31 8 1.00 7.00 1.50 2.12 31
6 12.50 10.62 8.50 12 1.00 8.12 1.62 2.25 44
8 15.00 13.00 10.62 12 1.13 10.25 1.88 2.69 67
10 17.50 15.25 12.75 16 1.25 12.62 2.12 2.88 91
12 20.50 17.75 15.00 16 1.38 14.75 2.25 3.12 130
14 23.00 20.25 16.25 20 1.38 16.75 2.38 3.31 180
16 25.50 22.50 18.50 20 1.50 19.00 2.50 3.69 235
18 28.00 24.75 21.00 24 1.50 21.00 2.62 3.88 285
20 30.50 27.00 23.00 24 1.63 23.13 2.75 4.00 345
22 33.00 29.25 25.25 24 1.75 25.25 2.88 4.25 405
24 36.00 32.00 27.25 24 1.88 27.62 3.00 4.50 510

ANSI B16.5 Class 600 Threaded Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Hub Diameter (X) Thickness (T) Length Thru Hub (Y) Approximate Weight (lbs)
1/2 3.75 2.62 1.38 4 0.63 1.50 0.56 0.88 2
3/4 4.62 3.25 1.69 4 0.75 1.88 0.62 1.00 3
1 4.88 3.50 2.00 4 0.75 2.12 0.69 1.06 4
1 1/4 5.25 3.88 2.50 4 0.75 2.50 0.81 1.12 5
1 1/2 6.12 4.50 2.88 4 0.88 2.75 0.88 1.25 7
2 6.50 5.00 3.62 8 0.75 3.31 1.00 1.44 9
2 1/2 7.50 5.88 4.12 8 0.88 3.94 1.12 1.62 13
3 8.25 6.62 5.00 8 0.88 4.62 1.25 1.81 16
3 1/2 9.00 7.25 5.50 8 1 5.25 1.38 1.94 21
4 10.75 8.50 6.19 8 1 6.00 1.50 2.12 37
5 13.00 10.50 7.31 8 1.13 7.44 1.75 2.38 63
6 14.00 11.50 8.50 12 1.13 8.75 1.88 2.62 80
8 16.50 13.75 10.62 12 1.25 10.75 2.19 3.00 115
10 20.00 17.00 12.75 16 1.38 13.50 2.50 3.38 170
12 22.00 19.25 15.00 20 1.38 15.75 2.62 3.62 200
14 23.75 20.75 16.25 20 1.5 17.00 2.75 3.69 230
16 27.00 23.75 18.50 20 1.63 19.50 3.00 4.19 330
18 29.25 25.75 21.00 20 1.75 21.50 3.25 4.62 400
20 32.00 28.50 23.00 24 1.75 24.00 3.50 5.00 510
22 34.25 30.62 25.25 24 1.88 26.25 3.75 5.25 590
24 37.00 33.00 27.25 24 2 28.25 4.00 5.50 730

ANSI B16.5 Class 900 Threaded Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Hub Diameter (X) Thickness (T) Length Thru Hub (Y) Approximate Weight (lbs)
1/2 4.75 3.25 1.38 4 0.88 1.50 0.88 1.25 4
3/4 5.12 3.50 1.69 4 0.88 1.75 1.00 1.38 5
1 5.88 4.00 2.00 4 1.00 2.06 1.12 1.62 8
1 1/4 6.25 4.38 2.50 4 1.00 2.50 1.12 1.62 9
1 1/2 7.00 4.88 2.88 4 1.13 2.75 1.25 1.75 12
2 8.50 6.50 3.62 8 1.00 4.12 1.50 2.25 25
2 1/2 9.62 7.50 4.12 8 1.13 4.88 1.62 2.50 36
3 9.50 7.50 5.00 8 1.00 5.00 1.50 2.12 26
4 11.50 9.25 6.19 8 1.25 6.25 1.75 2.75 53
5 13.75 11.00 7.31 8 1.38 7.50 2.00 3.12 83
6 15.00 12.50 8.50 12 1.25 9.25 2.19 3.38 110
8 18.50 15.50 10.62 12 1.50 11.75 2.50 4.00 170
10 21.50 18.50 12.75 16 1.50 14.50 2.75 4.25 245
12 24.00 21.00 15.00 20 1.50 16.50 3.12 4.62 325
14 25.25 22.00 16.25 20 1.63 17.75 3.38 5.12 400
16 27.75 24.25 18.50 20 1.75 20.00 3.50 5.25 425
18 31.00 27.00 21.00 20 2.00 22.25 4.00 6.00 600
20 33.75 29.50 23.00 20 2.13 24.50 4.25 6.25 730
24 41.00 35.50 27.25 20 2.63 29.50 5.50 8.00 1400

ANSI B16.5 Class 1500 Threaded Flanges

(a)All dimensions are in inches.
(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Hub Diameter (X) Thickness (T) Length Thru Hub (Y) Approximate Weight (lbs)
1/2 4.75 3.25 1.38 4 0.88 1.50 0.88 1.25 4
3/4 5.12 3.50 1.69 4 0.88 1.75 1.00 1.38 5
1 5.88 4.00 2.00 4 1.00 2.06 1.12 1.62 8
1 1/4 6.25 4.38 2.50 4 1.00 2.50 1.12 1.62 9
1 1/2 7.00 4.88 2.88 4 1.13 2.75 1.25 1.75 12
2 8.50 6.50 3.62 8 1.00 4.12 1.50 2.25 25
2 1/2 9.62 7.50 4.12 8 1.13 4.88 1.62 2.50 36

ANSI B16.5 Class 2500 Threaded Flanges

(a)All dimensions are in inches.
(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Hub Diameter (X) Thickness (T) Length Thru Hub (Y) Approximate Weight (lbs)
1/2 5.25 3.50 1.38 4 0.88 1.69 1.19 1.56 7
3/4 5.50 3.75 1.69 4 0.88 2.00 1.25 1.69 8
1 6.25 4.25 2.00 4 1.00 2.25 1.38 1.88 11
1 1/4 7.25 5.12 2.50 4 1.13 2.88 1.50 2.06 16
1 1/2 8.00 5.75 2.88 4 1.25 3.12 1.75 2.38 22
2 9.25 6.75 3.62 8 1.13 3.75 2.00 2.75 38
2 1/2 10.50 7.75 4.12 8 1.25 4.50 2.25 3.12 55

China Top Grade Threaded Flange Supplier & Manufacturer

Yanhao is a professional manufacturer of Steel Threaded Flanges (Screw-on Flanges) integrating research and development, forging, manufacturing, sales, and service. We are manufacturing threaded flanges in various shapes, sizes, grades, and specifications with ANSI flanges standards; the most preferred threaded pipe flanges in stainless steel, carbon steel, alloy steel material for critical applications; and store even odd sizes and hard to find pipe fittings in steel threaded pipe flanges. Our top-grade Threaded Flange is widely used in various industrial applications such as the oil and chemical industry, medicine, food, wastewater treatment, boiler tubes, and heat exchangers. We could be your best supplier to wholesale high-quality but cost-effective threaded flanges.

With tapered internal thread on bore that the pipe screws into, make threaded pipe flanges enable assembly easily and fast without welding. The threaded flange also named screw-on flange is an economical, time-saving device used in various industrial applications but generally only for low-pressure conditions such as buildings, elevators, railings, precision equipment, etc.

Competitive prices, outstanding quality, superior product knowledge, strict quality inspection, hassle-free online ordering, and responsive service (before and after the sale).

Professional OEM/ODM service for thread pipe flanges in various dimensions and materials as per the specifications provided by our clients, meeting international and national standards.

ANSI B16.5 thread flanges in pressure class 150-2500 are always in stock, and our unmatched in-house capacity ensures your customized flanges can be shipped on time.

 

Wholesale Top Quality Threaded Pipe Flanges At Competitive Price From Yanhao

Where to wholesale good-quality threaded flanges at the best price? Look for a reliable threaded flange supplier? Yanhao with over 20 years experience in producing flanges, could be your best sew-on flange supplier from China! We offer threaded flanges in various dimensions (34″ threaded flange, 12″ threaded flange, 4″ threaded flange, 3″ threaded flange, 2″ threaded flange, 1 1/2″ threaded pipe flange) and materials (stainless steel threaded flange, carbon steel threaded flange, alloy steel threaded flange) as per the specifications provided by our clients. Our sew-on flanges are also available with Raised Face Threaded Flange or RTJ Threaded Flange. List of countries where Yanhao supplies ANSI B16.5 threaded flanges: USA, Japan, Mexico, South Korea, Spain, Argentina, Colombia, Malaysia, Saudi Arabia, Turkey, United Kingdom. Welcome to send your inquiry to China Top Threaded Pipe Flange Supplier – Yanhao!

What Is Threaded Flange?

Threaded Flange (Threaded Pipe Flange, Threaded Forged / Cast Flange), produced by hot and cold rolled, is a Screw-on Flange on connections that allows an easy and quick assembly without welding due to its threaded hole. The screw-on flange is an economical, time-saving device used in various industrial applications, but is suitable only for low-pressure systems in which there are no thermal cycles that could cause the threads to loosen.

The passage is threaded to match an external thread on the pipe. This flange is not recommended for services generating stresses, especially if these are cyclic or undergoing significant temperature variations. Its main advantage is that it can be assembled to the pipe without having to weld, making it suitable for use under very high pressure at atmospheric temperature and in highly explosive areas, where welding is dangerous.

 

Specification of Threaded Flanges

1/2″~24″

Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.

Threaded Pipe Flange Application

Chemical, Engineering, Construction, Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Manufacturing Industry, Pipe Projects, etc.

Threaded Flange Materials

Carbon Steel Flange: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65 ,F70;

Stainless Steel Flange: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;

Alloy Steel Flange: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ;

Sealing Surface Types For Threaded Pipe Flanges

RF (Raised Face);

FF (Flat Face);

M&F (Male-and-Female Face);

RTJ (Ring-Type Joint)

F (Female Face);

M (Male Face);

T&G (Tongue and Groove Face);

click here -> Alternate Flange Facings

Threaded Pipe Flange Standards

ANSI B16.5

Threaded Flange Pressure Grade

ANSI class 150, 300, 400, 600, 900, 1500, 2500

If you need other flanges please click here: Flanges

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    Mengcun Hui Autonomous County, Cangzhou City, Hebei Province

    Phone: +8613313073735(same as WeChat)

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    Email: flanges.yh@gmail.com

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    China Hebei Yanhao Pipeline Equipment Co., Ltd. is a professional manufacturer of steel elbow flange pipe fittings.Our company undertakes the customization of various standard or non-standard models of flanges,elbows, tees, large and small heads, reducers, The company has multiple production lines that...