Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500

Product Details
Customization: Available
Standard: ANSI, DIN, GB, JIS, GOST, BSW
Type: Threaded Connection Flange
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  • Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
  • Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
  • Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
  • Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
  • Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
  • Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
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  • Overview
  • Product Parameters
  • Company Profile
Overview

Basic Info.

Model NO.
1/2"-24"
Material
Stainless Steel
Structure
Flanges
Connection
Flanged
Sealing Surface
RF
Manufacturing Way
Forging
Certificate
ISO9001
Pressure
150# 300# 400# 600# 900# 1500# 2500#
Usage
Suitable for Water, Oil and Gas Industrial
Connection Endstsocket Weld or Threaded
NPT, Bsp, BSPT etc
Factory
Over 30 Years Experience
Transport Package
Customized
Specification
1/2"-24"
Trademark
GUCHENG
Origin
Dingxiang
HS Code
73079100
Production Capacity
50000 Pieces/Year

Packaging & Delivery

Package Size
15.00cm * 15.00cm * 15.00cm
Package Gross Weight
10.000kg

Product Description

Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500

Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500ASME/ANSI B16.5 FORGING FLANGE -- Class 2500 Threaded Flanges

The threaded flange manufactured by ASME B16.5 is similar to the slip-on flange, but the bore shall have a taper pipe thread conforming to ASME B1.20.1. The thread shall be concentric with the axis of the flange opening, and variations in alignment (perpendicular to the flange face) shall not exceed 5 mm per meter. Threaded flanges are available in sizes NPS 1/2 through NPS 24 for pressure ratings of Class 150, Class 300, Class 400, Class 600, and Class 900. Sizes for Class 1500 and Class 2500 are available from NPS 1/2 to NPS 2-1/2.

Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
Variations in threading shall be limited to one turn large or one turn small from the gaging notch when using working gages. The reference point for chamfered thread (Class 150) gaging is the starting end of the threaded flange, provided the thread chamfer does not exceed the major diameter of the internal thread. When a chamfer on the internal thread exceeds this limit, the reference point becomes the last thread scratch on this chamfer cone. The reference point for counterbored thread (Classes 300 through 2500) gaging shall be the last thread scratch on the chamfer cone.
The threaded flange joint can be assembled without welding. A pipe, which is furnished with tapered threads at its ends, can be readily assembled with the threaded flange. This feature makes the threaded flange well-suited to extreme pressure services that operate at normal ambient temperatures and in highly explosive areas where welding may create a hazard.
Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500

Product Parameters

 
Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500 Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
Slip-On Flange (SO) Weld Neck Flange (WN)
     
Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500 Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500 Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
Threaded Flange (TH) Lap Joint Flange (LJ) Blind Flange (BL)
 
Nominal
Pipe
Size
Outside
Diam.
Diam.
at Base
of Hub
0.D.of
Raised
Face
Thickness BORE LENGTH  THRU  HUB Diam.of
Hub at
Bevel
Radius
of
Fillet
Thread
Length
Welding Neck
Socket Welding
Slip-on
Socket
Welding
Lap
Joint
Counter
Bore
Min.
Welding
Neck
Slip-on
Threaded
Socket
Welding
Lap
Joint
D X G t B1 B2 B3 B T1 T2 T3 A R Q
 1/2 133 42.9 35.1 30.2 To be specifed by purchaser. 22.4 22.9 23.6 73.2 39.6 39.6 21.3 3.0 28.4
 3/4 140 50.8 42.9 31.8 27.7 28.2 29.0 79.2 42.9 42.9 26.7 3.0 31.8
1     159 57.2 50.8 35.1 34.5 35.1 35.8 88.9 47.8 47.8 33.5 3.0 35.1
1 1/4 184 73.2 63.5 38.1 43.2 43.7 44.5 95.3 52.3 52.3 42.2 4.8 38.1
1 1/2 203 79.2 73.2 44.5 49.5 50.0 50.5 111.3 60.5 60.5 48.3 6.4 44.5
2     235 95.3 91.9 50.8 62.0 62.5 63.5 127.0 69.9 69.9 60.5 7.9 50.8
2 1/2 267 114.3 104.6 57.2 74.7 75.4 76.2 142.7 79.2 79.2 73.2 7.9 57.2
3 305 133.4 127.0 66.5 90.7 91.4 92.2 168.1 91.9 91.9 88.9 9.7 63.5
4 356 165.1 157.2 76.2 116.1 116.8 117.6 190.5 108.0 108.0 114.3 11.2 69.9
5 419 203.2 185.7 91.9 143.8 144.5 144.5 228.6 130.0 130.0 141.2 11.2 76.2
6 483 235.0 215.9 108.0 170.7 171.5 171.5 273.1 152.4 152.4 168.4 12.7 82.6
8 552 304.8 269.7 127.0 221.5 222.3 222.3 317.5 177.8 177.8 219.2 12.7 95.3
10 673 374.7 323.9 165.1 276.4 277.4 276.4 419.1 228.6 228.6 273.1 12.7 108.0
12 762 441.5 381.0 184.2 327.2 328.2 328.7 463.6 254.0 254.0 323.9 12.7 120.7
 
Nominal
Pipe
Sze
 DRILLING BOLTING APPROXIMATE    WEIGHT
Stud Bolt Length
Bolt
Circle
Diam,
Number
of
Holes
Diam.
of
Holes
Diam.
of
Bolt
(inch)
0.25"
Raised
Face
Male-
Female
Tongue
-Groove
Ring
Joint
Welding Neck Slip-on and
  Threaded
Lap Joint Blind
Kg lb Kg lb Kg lb Kg lb
 1/2 88.9    22.4   3/4 120.7  114.3  120.7  3.18  7.00  3.18  7.00  3.00  6.60  3.18  7.00 
 3/4   95.3    22.4   3/4 127.0  120.7  127.0  4.08  9.00  4.08  9.00  3.63  8.00  4.54  10.00 
1     108.0    25.4   7/8 139.7  133.4  139.7  5.45  12.00  5.44  12.00  4.99  11.00  5.44  12.00 
1 1/4 130.0    28.4  1     152.4  146.1  152.4   9.07  20.00  8.16  18.00  7.26  16.00  8.16  18.00 
1 1/2 146.1    31.8  1 1/8 171.5  165.1  171.5    11.35  25.00    11.00  24.30  9.99  22.00  10.44  23.00 
2     171.5    28.4  1     177.8  171.5  177.8    19.07  42.00    17.25  38.00  16.80  37.00  17.71  39.00 
2 1/2 196.9  31.8  1 1/8 196.9  190.5  203.2  23.61  52.00    24.97  55.00  24.06  53.00  25.42  56.00 
3     228.6    35.1  1 1/4 222.3  215.9  228.6    42.68  94.00    37.68  83.00  36.32  80.00  39.04  86.00 
4     273.1    41.1  1 1/2 254.0  247.7  260.4    64.00  141.00    58.00  127.90  54.48  120.00  60.38   133.00 
5     323.9  47.8  1 3/4 298.5  292.1  311.2  110.68  244.00    95.25  210.00  92.53  204.00  101.15   223.00 
6     368.3    53.8  2     342.9  336.6  355.6  176.46  378.00   146.51  323.00  143.01  315.30  156.63   345.30 
8     438.2  12    53.8  2     381.0  374.7  393.7  261.27  576.00   219.99  485.00  213.38  470.40  240.62   530.50 
10     539.8  12  66.5  2 1/2 489.0  482.6  508.0  484.43  1068.00   419.57  925.00  408.60  900.80  465.36   1026.00 
12     619.3  12    73.2  2 3/4 539.8  533.4  558.8  692.35  1526.30   590.20  1301.00  572.95  1263.00  664.06   1464.00 
 
Notes:                                           
(1) For the inside diameter of pipes(corresponding to 'Bore' (B1)of Welding Neck Flanges), refer to page 60                                                        
(2) Class 2500 flanges except Lap Joint will be furnished with a 0.25"(6.35mm)raised face, which is not included in 'Thickness' (t) and 'Length through Hub'(T1),(T2). 
(3) For Slip-on, Threaded, and Lap Joint Flanges, the hubs can be shaped either vertically from base to top or tapered within the limits of 7 degrees".
(4) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without a hub.
(5) The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. Spot-facing is carried out according to MSS SP-9, without reducing thickness(t) to accomplish parallelism. 
(6) ANSI B16.5 does not cover class 2500 Slip-on Flanges, Slip-on flanges are at the manufacturer's option.                                     

ANSI B16.5 FORGED FLANGES TOLERANCE
Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
THREAD,SOCKET-WELDING,                                                    SLIP-ON,LAP JOINT AND BLIND. WELDING NECK
Outside
Diameter
When O.D.is
24"or less
±1/16"(1.6mm) Outside
Diameter
When O.D.is
24"or less
±1/16"(1.6mm)*
When O.D.is
Over  24"
±1/8"(3.2mm)* When O.D.is
Over  24"
±18"(3.2mm)
Inside
Diameter
Threaded Within limits on
boring gauge
Inside
Diameter
10"and Smaller ±1/32"(0.8mm)
20"thru 18" ±1/16"(1.6mm)
Socket-Welding
Slip-on and
Lap joint
10"&Smaller
+1/32"(0.8mm).0"
12"&Larger
+1/16"(1.6mm).O"
20"and Larger +1/8"(3.2mm)
-1/16"(1.6mm)
Outside
Diameter
of Hub
5"and Smaller +3/32"(2.4mm)
-1/32"(0.8mm)
Diameter
of Hub
at Base
When Hub Base is
24"or Smaller
±1/16"(1.6mm)*
6"and Larger +5/32"(4.0mm)
-1/32"(0.8mm)
When Hub Base is
Over  24"
±1/8"(3.2mm)*
Diameter
of Contact
Face
1/16"Raised Face ±1/32"(0.8mm) Diameter
of Contact
Face
116"Raised Face  ±1/32"(0.8mm)
1/4"Raised Face Tongue & Groove
Male,Female
±1/64"(0.4mm) 14"Raised Face
Tongue &Groove
Male,Female
±1/64"(0.4mm)
Diameter
of
Counterbore
Same as for Inside Diameter Diameter of
Hub at Point
of Welding
5"and Smaller +3/32"(2.4mm)*
-1/32"(0.8mm)
6"and Larger +5/32"(4.0mm)
-1/32"(0.8mm)
Drilling Bolt Circle ±1/16"(1.6mm) Drilling Bolt Circle ±1/16"(1.6mm)
Bolt Hole Spacing ±1/32"(0.8mm) Bolt Hole Spacing ±1/32"(0.8mm)
Eccentricity of
Bolt Circle with
Respect to Facing
21/2"Smaller
1/32"(0.8mm)Max.
3"&Larger
1/16"(1.6mm)Max
Eccentricity of
Bolt Circle with
Respect to Facing
21/2"Smaller
1/32"(0.8mm)Max.
3"&Larger
1/16"(1.6mm)Max.
Eccentricity of
Bolt Circle with
Respect to Bore
1/32"(0.8mm)Max.* Eccentricity of
Bolt Circle with
Respect to Bore
1/32"(0.8mm)Max.*
Eccentricity of
Facing with
Respect to Bore
1/32"(0.8mm)Max.* Eccentricity of
Facing with
Respect to Bore
1/32"(0.8mm)Max.*
Thickness 18"and Smaller +1/8"(3.2mm).0^ Thickness 18"and Smaller +1/8"(3.2mm),0"
20"and Larger +3/16"(4.8mm).04 20"and Larger +3/16"(4.8mm).O
Length
Thru Hub
10"and Smaller ±1/16"(1.6mm) Length
Thru Hub
10"and Smaller ±1/16"(1.6mm)
12"and Larger ±1/8"(3.2mm) 12"and Larger ±1/8"(3.2mm)
Notes:
This tolerance is not covered in ANSI B16.5, but maker's option.


STANDARD FINISHES for Face of Flange (ANSI  B16.5)
Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500
STOCK FINISH:
The most widely used gasket finish.because practically is suitable for all ordinary service conditions. This is a continuous spiral groove. Flanges size 12" (304.8mm)and smaller are produced with a 1/16" round-nosed tool at a feed of 1/32" per revolution. For sizes 14" (355.6mm)and larger. the finish is made with a 1/8" round-nosed tool at a feed of 3/64" per revolution.
SPIRAL SERRATED OR PHONOGRAPHIC:
This finish is produced by using a 90°round-nosed tool.
CONCENTRIC SERRATED:
This finish is produced by using a 90°round-nosed tool.
SMOOTH  FINISH:
The cutting tool employed shall have an approximate 0.06"radius.
The resultant surface finish shall have a 125μ inch to 250μ inch(ANSI B16.5 para 6.4;4.1)
1. RAISED FACE AND LARGE MALE AND FEMALE
    A serrated-concentric or serrated-spiral finish with 34 to 64 grooves per inch is used.
    The cutting tool employed has an approximate 0.06 in.radius.The resultant surface finish shall have a 125μ inch(3.2m)to 500μ inch(12.5μm) approximate roughness.
2. TONGUE AND GROOVE AND SMALL MALE AND FEMALE
    The gasket contact surface does not exceed 125μ in. (3.2μm)roughness
3. RING JOINT
    The inside wall surface of the gasket groove does not exceed 63μin.(1.6μm)roughness,
4. BLIND
    Blind flanges need not be faced in the center if, when this center part is raised, its diameter is at least 1 in. smaller than the inside diameter of the corresponding pressure class fittings. When the center part is depressed, its diameter is not greater than the inside diameter of the corresponding pressure class fittings. Machining of the depressed center is not required.

Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500The manufacturing process of forged flanges begins with the selection of high-quality steel, which is heated and shaped under high pressure in forging dies to enhance its strength and durability. After forging, the flanges are trimmed, heat-treated to relieve internal stresses, and precisely machined to meet the required dimensions. They undergo rigorous inspection and testing for quality assurance, followed by surface treatments for enhanced corrosion resistance. This process results in flanges that are strong, reliable, and suitable for demanding industrial environments.
Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500

Company Profile

Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500Dingxiang Country Gu Cheng Forging Company Ltd.  is a leading manufacturer in Dingxiang County, Shanxi Province, known as the "Forging Capital of China." Established with a deep-rooted history in forging, we specialize in producing high-quality flanges and forged components for a wide range of industrial applications. Our extensive product line includes ANSI, DIN, JIS, and EN standard flanges and customized forged parts designed to meet specific customer requirements.

Gu Cheng Forging with over 30 years of experience in producing high-quality forged flanges. Including Weld Neck Flange (WN)Slip-On Flange (SO)Blind Flange (BL)Socket Weld Flange (SW)Lap Joint FlangePlate Flange, and Customized forged flange.

At Gu Cheng Forging, we serve a global market, providing flanges and forged components for industries such as oil and gas, chemical processing, power generation, shipbuilding, and more. We pride ourselves on our ability to deliver tailored solutions, meeting the highest standard of safety, performance, and efficiency.

As a factory, we can tailor flanges based on your specific requirements for size, material, pressure rating, and surface treatment (galvanization, black paint, etc.). By preventing rust and deterioration, the coating enhances the flange's performance, offering long-term resilience and reducing maintenance needs over time.

Dingxiang Country Gu Cheng Forging Company Ltd,  strives to be a trusted partner for all your forging needs, ensuring long-term cooperation and mutual success.

Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500

Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500

Q1: Are you a manufacturer or a trading company?
A1: We are a professional manufacturer with over 30 years of experience in forging flanges. Our factory is located in Dingxiang, China, known as the "Forging Capital." We produce high-quality, customized forged flanges, offering factory-direct pricing and ensuring top-notch quality.


Q2: What types of flanges do you produce?
A2: We manufacture a wide range of forged flanges, including:

  • Weld Neck Flange (WN)
  • Slip-On Flange (SO)
  • Blind Flange (BL)
  • Socket Weld Flange (SW)
  • Threaded Flange (TH)
  • Lap Joint Flange
  • Plate Flange
All our flanges comply with international standards such as ASME, DIN, JIS, and BS.

Q3: What materials do you use?
A3: We offer flanges in a variety of materials, including:
  • Carbon Steel
  • Stainless Steel
  • Alloy Steel

Each material is sourced from certified suppliers, ensuring durability and performance in diverse industrial applications.

Q4: Can you provide customized flanges?
A4: Absolutely! As a factory, we specialize in customization. We can tailor flanges based on your specific requirements for size, material, pressure rating, and surface treatment (galvanization, black paint, etc.).


Q5: How do you ensure the quality of your products?
A5: Quality is our top priority. Every flange undergoes a strict inspection process, including:

  • Material analysis
  • Dimensional checks
  • Pressure testing
  • Surface treatment inspections

Our CNC machining ensures precise dimensions, and we adhere to strict international standards throughout the manufacturing process.Reliable Forged Flange Manufacturer Carbon Steel Threaded Flange NPT ANSI B16.5 Class 2500

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