
ASME B16.47 Series B Class 300 Weld Neck Flange Overview
| Flange Manufacturing Type | ASME B16.47 Series B Class 300 Weld Neck Flange |
|---|---|
| B16.47B Weld Neck Flange Physical Attribute | Lighter, With Increased, Smaller Diameter Bolting |
| Size | 26″ – 60″ for Class 75, 150 and 300 26″ – 36″ for Class 400, 600 and 900 |
| Applications and Uses | Used in Pipe to Pipe Applications |
| Manufacturing Specification | API 605 |
Sr B 300LB WN Flanges and ANSI B16.47 Series B Cl 300 WNRF Flange Suppliers in UAE
ASME B16.47 Series B Class 300 Weld Neck Flange Specification

Dimensions: ASME B16.47 Series B
Size Range: NPS: 26″ to 60
Pressure rating: Class 75, 150, 300 (26″ to 60″)
Manufacturing Standard: API 605
Marking: ASME B16.47 + Manufacturer Name + Size + Material
Flange Facings: Raised Face (RF), Ring Joint (RTJ), Flat Face (FF)
Get Quote Directly from ASME B16.47 Series B Class 300 Weld Neck Flange Suppliers
100% Tested ASME B16.47 Series B Class 300 Weld Neck Flange with MTC EN 10204/3.1
ASME B16.47 Series B Class 300 Weld Neck Flange Dimensions

Check ASME b16.47 Sr B 300# Welding Neck Flange Grades, Size Chart, Dimensions, and Weight
B16.47 Series B Class 300 Weldneck Flange Weight
| Sizes | Weld Neck Weight |
|---|---|
| 60 | 2870 |
| 58 | 2770 |
| 56 | 2595 |
| 54 | 1980 |
| 52 | 1840 |
| 50 | 1710 |
| 48 | 1575 |
| 46 | 1470 |
| 44 | 1235 |
| 42 | 1135 |
| 40 | 990 |
| 38 | 915 |
| 36 | 840 |
| 34 | 750 |
| 32 | 685 |
| 30 | 550 |
| 28 | 450 |
| 26 | 400 |
Explore Nearby Locations for the Quickest Delivery Options
| City | Region | Country |
|---|---|---|
| Dubai | Middle East | United Arab Emirates |
| Abu Dhabi | Middle East | United Arab Emirates |
| Dammam | Middle East | Saudi Arabia |
| Riyadh | Middle East | Saudi Arabia |
| Doha | Middle East | Qatar |
| Abuja | Africa | Nigeria |
| Kuwait City | Middle East | Kuwait |
| Jeddah | Middle East | Saudi Arabia |
| Cairo | MENA | Egypt |
| Casablanca | MENA | Morocco |
| Johannesburg | Africa | South Africa |
| Cape Town | Africa | South Africa |
| Lagos | Africa | Nigeria |
Bolt Chart of Series B Class 300 WNRF Flange
| Flange Size | Bolt Length | Bolt Circle |
|---|---|---|
| 60 | 18 | 69.44 |
| 58 | 18 | 67.44 |
| 56 | 17.75 | 65 |
| 54 | 16 | 62.12 |
| 52 | 16 | 59.75 |
| 50 | 15.75 | 57.75 |
| 48 | 15.25 | 55.75 |
| 46 | 15 | 53.75 |
| 44 | 14.5 | 51 |
| 42 | 14 | 49 |
| 40 | 13.5 | 46.88 |
| 38 | 13 | 44.88 |
| 36 | 12.5 | 42.88 |
| 34 | 12 | 40.62 |
| 32 | 12 | 38.5 |
| 30 | 11.25 | 36.25 |
| 28 | 10.5 | 33.75 |
| 26 | 10.5 | 31.62 |
ASME B16.47 Series B Class 300 Weld Neck Flange Material
| Duplex Steel ANSI B16.47 Series B Class 300 Welding Neck Flanges | Duplex 2205, UNS S31803 (DIN 1.4462), UNS S32205, Super Duplex 2507, UNS S32750 (DIN 1.4410), UNS S32760, ASTM A182 Grade F51, F52, F53, F54, F55, F57, F59, F60, F61, SMO 254, AL6xn, 6Mo, UNS S31254, DIN 1.4547 |
|---|---|
| Nickel Alloy Series B 300 Lbs Weld Neck Pipe Flanges | ASTM B564 / ASME SB 564M, Nickel 200, Alloy 201, Nickel 205LC, Nickel 205 |
| Inconel ANSI B16.47 Sr B 300# RTJ Wn Flange |
ASME SB 564 UNS N06600 (Alloy 600) W.Nr. 2.4816, UNS N06601 (Alloy 601) W.Nr. 2.4851, UNS N06617 (Alloy 617) W.Nr. 2.4663a, ASTM B564 UNS N06625 (Alloy 625) W.Nr. 2.4856, UNS N06626 (Alloy 625LCF) W.Nr. 2.4856, UNS N06686 (Alloy 686) W.Nr. 2.4606, UNS N06690 (Alloy 690) W.Nr. 2.4642, UNS N06693 (Alloy 693), UNS N09706 (Alloy 706), UNS N07718 (Alloy 718) W.Nr. 2.4668, UNS N07719 (Alloy 718SPF), UNS N07725 (Alloy 725), UNS N07740 (Alloy 740H), UNS N07750 (Alloy X-750) W.Nr. 2.4669, UNS N07751 (Alloy 751), UNS N07754 (Alloy MA754), UNS R30783 (Alloy 783) |
| Incoloy ASME B16.47 Series B Cl 300 Rf Weld Neck Flange | ASTM B564 UNS N08825, UNS N09925 |
| Incoloy Alloy 20 Series B Class 300 Wnrf Flange | ASTM B462 UNS N08020 |
| Hastelloy Series B 300 Lb Wn Flange | ASTM B564 UNS N10276 (Hastelloy C276), UNS N06022 (Hastelloy C22), UNS N06200 (C2000), UNS N06002 (X), UNS N10001 (B), UNS N10665 (B2), UNS N10675 (B3), UNS N06035 (G35), UNS N06985 (G3), UNS N06030 (G30), UNS N06455 (C4), UNS N07022 (C-22HS), UNS N10003 (N), UNS N06635 (S) |
| Monel ASME B16.47 Series B Cl 300 Rf Weld Neck Flange | ASTM B564 UNS N04400, UNS N05500 |
| SS 904L ASME B16.47 Series B Class 300 Raised Face Weld Neck Flange | UNS N08904 |
| Stainless Steel Series B 300 Lbs Weld Neck Pipe Flanges | ASTM A182 Gr 304, 304L, 316, 316L, 310, 310S, 317L, 316Ti, 321, 347, 347H, UNS S66286 |
| Carbon Steel ASME B16.47 Series B Class 300 Weld Neck Flange | ASTM A105, A105N, A350 LF2 (LTCS), LF3, AISI 4130, AISI 4140, AISI 4340, AISI 4145 |
| Carbon Steel ASTM A694 Series B Cl 300 Reducing Weld Neck Flange | A694 F42, F46, F52, F60, F65, F706 |
| Alloy Steel Series B Class 300 Wnrf Flange | ASTM A182 F5, F9, F11, F22, F91 |
| Cupro Nickel Series B 300 Lb Wn Flange | Copper Nickel 90/10 and Cuni 70/30 |
| Titanium ANSI B16.47 Sr B 300# RTJ Wn Flange | Titanium Gr 2, Gr 5 |
Technical Consultants Are Stationed in the Locations Listed Below to Address All Technical Inquiries
| Muscat | Riyadh | Dubai | Ras Al Khaimah |
|---|---|---|---|
| Sharjah | Fujairah | Umm Al Quwain | Doha |
| Saudi Arabia | Al Jubail | Abu Dhabi | Ajman |
Choose Among the Verified Suppliers of ANSI B16.47 Series b Class 300 Weld Neck Flange in Dubai, Compare Price Lists And Quality
Types of ANSI B16.47 Series B Class 300 Welding Neck Flanges

ANSI B16.47 Series B Class 300 Welding Neck Flanges

ANSI B16.47 Sr B 300# RTJ WN Flange

Series B Class 300 WNRF Flange

ASME B16.47 Series B Cl 300 RF Weld Neck Flange

Series B Cl 300 Reducing Weld Neck Flange

Series B 300 Lbs Weld Neck Pipe Flanges
Buy Series B 300 LB WN Flange in UAE, Check ASME b16.47 sr b 300# WNRF Flanges Price List in Dubai
ASME B16.47 Series B Cl 300 Weld Neck Flange Abbreviation
| Flanges | Abbreviation |
|---|---|
| Weld Neck Class 300 | WN CL300 |
| Weld Neck Flange | WNF |
| Weld Neck Ring-Type Joint | WNRTJ |
| Weld Neck | WN |
| Weld Neck Raised Face | WNRF |
| Weld Neck Flat Face | WNFF |
Locate Available Material from Stock
| Middle East countries | Qatar, Lebanon, Bahrain, Saudi, Kuwait, UAE, Jordan, Iraq, Syria, Iran, Yemen |
|---|---|
| Africa | Nigeria, South Africa, Kenya, Morocco, Egypt, Tunisia, Algeria |
| MENA | Morocco, Libya, Algeria, Tunisia, Egypt, Israel, Palestine |
You Can Save 30%-40% on Cost When Ordering Directly from ASME B16.47 Series B Cl 300 Raised Face Weld Neck Flange Manufacturers in The Middle East
Maximum Bore of Series B Class 300 WNRF Flange
| Type | Maximum Bore |
|---|---|
| Weld Neck Class 300 | Approx 3.47″ |
ASME B16.47 Series B Cl 300 RF Weld Neck Flange Outside Diameter
| NPS | Dia at Base | O.D |
|---|---|---|
| 50 | 52.38 | 61.5 |
| 48 | 50.31 | 59.5 |
| 46 | 48.38 | 57.5 |
| 44 | 46.19 | 54.5 |
| 42 | 44 | 52.5 |
| 40 | 42 | 50.12 |
| 38 | 40 | 48.12 |
| 36 | 38 | 46.12 |
| 34 | 36.12 | 43.62 |
| 32 | 34 | 41.5 |
| 30 | 32 | 39 |
| 28 | 29.75 | 36.25 |
| 26 | 27.62 | 34.12 |
ANSI B16.47 Sr B 300# RTJ WN Flange Installation

Material Specification of Series B 300 LBS Weld Neck Pipe Flanges
| Nominal Designation | 25Cr-7Ni-3.5Mo-N-Cu-W | 25Cr-7Ni-4Mo-N | 23Cr-12Ni | 25Cr-20Ni | 20Cr-18Ni-6Mo | 22Cr-5Ni-3Mo-N |
| Forgings | A 182 Gr. F55 | A 182 Gr. F53 | … | A 182 Gr. F310 | A 182 Gr. F44 | A 182 Gr. F51 |
Material Inspection Facilities in the Following Countries
| Country | Cities |
|---|---|
| Netherlands | The Hague |
| Belgium | Meeuwen-Gruitrode |
| Netherlands | Amsterdam |
| Belgium | Antwerp |
| Netherlands | Haarlem |
| Belgium | Brussels |
| Belgium | Seraing |
| Belgium | Ghent |
| Belgium | Leuven |
| Netherlands | Eindhoven |
| Belgium | Westerlo |
| Netherlands | Rotterdam |
Series B Cl 300 Reducing Weld Neck Flange Conditions
- Tempering
- Normalizing
- Stress Relieving
- Quenching
- Annealing
Pressure Testing Temperature of ASME B16.47 Series B Cl 300 Rf Weld Neck Flange
| Pressure Testing Temperature | |
|---|---|
| °F | °C |
| 100 | 38 |
ANSI B16.47 Sr B 300# RTJ WN Flange Advantages
- Excellent Stress Distribution
- High Resistance to Bending
- Unrestricted Flow
- Low Erosion rates
Series B 300 Lb Wn Flange Thickness Chart
| NPS | O.D | SCH 160 | SCH 140 | SCH 120 | SCH 100 | SCH 80 | SCH 60 | SCH 40 | SCH 30 | SCH 20 | SCH 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 36 | 36 | – | – | – | – | – | – | 34.5 | 34.75 | 35 | 35.376 |
| 30 | 30 | – | – | – | – | – | – | – | 28.75 | 29 | 29.376 |
| 24 | 24 | 19.312 | 19.876 | 20.376 | 20.938 | 21.562 | 22.062 | 22.624 | 22.876 | 23.25 | 23.5 |
| 22 | 22 | – | – | – | – | – | – | – | – | – | 21.5 |
| 20 | 20 | 16.062 | 16.5 | 17 | 17.438 | 17.938 | 18.376 | 18.812 | 19 | 19.25 | 19.5 |
| 18 | 18 | 14.438 | 14.876 | 15.25 | 15.688 | 16.124 | 16.5 | 16.876 | 17.124 | 17.376 | 17.5 |
| 16 | 16 | 12.812 | 13.124 | 13.562 | 13.938 | 14.312 | 14.688 | 15 | 15.25 | 15.376 | 15.5 |
| 14 | 14 | 11.188 | 11.5 | 11.812 | 12.124 | 12.5 | 12.812 | 13.124 | 13.25 | 13.376 | 13.5 |
| 12 | 12.75 | 10.126 | 10.5 | 10.75 | 11.062 | 11.374 | 11.626 | 11.938 | 12.09 | 12.25 | 12.39 |
| 10 | 10.75 | 8.5 | 8.75 | 9.062 | 9.312 | 9.562 | 9.75 | 10.02 | 10.136 | 10.25 | 10.42 |
| 8 | 8.625 | 6.813 | 7.001 | 7.187 | 7.437 | 7.625 | 7.813 | 7.981 | 8.071 | 8.125 | 8.329 |
| 6 | 6.625 | 5.187 | – | 5.501 | – | 5.761 | – | 6.065 | – | – | 6.357 |
| 5 | 5.563 | 4.313 | – | 4.563 | – | 4.813 | – | 5.047 | – | – | 5.295 |
| 4 | 4.5 | 3.438 | – | 3.624 | – | 3.826 | – | 4.026 | – | – | 4.26 |
| 3 | 3.5 | 2.624 | – | – | – | 2.9 | – | 3.068 | – | – | 3.26 |
| 3 ½ | 4 | – | – | – | – | 3.364 | – | 3.548 | – | – | 3.76 |
| 2 | 2.375 | 1.687 | – | – | – | 1.939 | – | 2.067 | – | – | 2.157 |
| 2 ½ | 2.875 | 2.125 | – | – | – | 2.323 | – | 2.469 | – | – | 2.635 |
| 1 | 1.315 | 0.815 | – | – | – | 0.957 | – | 1.049 | – | – | 1.097 |
| 1 ¼ | 1.66 | 1.16 | – | – | – | 1.278 | – | 1.38 | – | – | 1.442 |
| 1 ½ | 1.9 | 1.338 | – | – | – | 1.5 | – | 1.61 | – | – | 1.682 |
| ½ | 0.84 | 0.464 | – | – | – | 0.546 | – | 0.622 | – | – | 0.674 |
| ¾ | 1.05 | 0.612 | – | – | – | 0.742 | – | 0.824 | – | – | 0.884 |
ASME B16.47 Series B Class 300 Weld Neck Flange Bolt Torque Chart
| Size (mm) | Size (Inch) | Maximum Radial Projection | |
|---|---|---|---|
| Deeper (mm) | No Deeper (mm) | ||
| 600 | 24 | 6.0 | 12.0 |
| 500 | 20 | 6.0 | 12.0 |
| 450 | 18 | 6.0 | 12.0 |
| 400 | 16 | 4.5 | 10.0 |
| 350 | 14 | 4.5 | 8.0 |
| 300 | 12 | 4.5 | 8.0 |
| 250 | 10 | 4.5 | 8.0 |
| 200 | 8 | 4.5 | 8.0 |
| 150 | 6 | 3.0 | 6.0 |
| 125 | 5 | 3.0 | 6.0 |
| 100 | 4 | 3.0 | 6.0 |
| 90 | 3 1/2 | 3.0 | 6.0 |
| 80 | 3 | 1.5 | 4.5 |
| 65 | 2 1/2 | 1.5 | 3.0 |
| 50 | 2 | 1.5 | 3.0 |
| 40 | 1 1/2 | 1.5 | 3.0 |
| 32 | 1 1/4 | 1.5 | 3.0 |
| 25 | 1 | 1.5 | 3.0 |
| 20 | 3/4 | 1.5 | 3.0 |
| 15 | 1/2 | 1.5 | 3.0 |
Face Types of Series B Cl 300 Reducing Weld Neck Flange
- Flat Face
- Raised Face
- Ring Type Joint
- Tongue and Groove
ANSI B16.47 Sr B 300# WN Flange Gasket Insulation

Series B 300 LB Wn Flange Tolerances
| Series B 300 Wn Flange Tolerances | |
|---|---|
| O.D | ± 0.19" |
| I.D | ± 0.12" |
What Type of Tests are Conducted on ASME B16.47 Sr B 300# Welding Neck Flange?
- Radiographic test
- Destructive tests
- Ultrasonic testing
- Metallurgical tests
- Dimensional inspection
- Hydrostatic test


Table of Content