F316 4"Raised Face (RF) Weld Neck Flange (WN) Stainless Steel 150-2500# ASME B16.5

Product Overview

F316 4"Raised Face (RF) Weld Neck Flange (WN) Stainless Steel 150-2500# ASME B16.5

The F316 4"Raised Face (RF) Weld Neck Flange (WN) Stainless Steel 150-2500# ASME B16.5 is a high-quality industrial piping component manufactured to meet stringent international standards. Designed for critical applications across various industries, this flange offers exceptional performance, reliability, and longevity.

Our stainless steel flanges are precision-engineered using advanced manufacturing techniques and premium-grade materials. Each flange undergoes rigorous quality control and testing to ensure compliance with dimensional tolerances and pressure ratings specified by international standards.

Key Features

• Premium Quality Materials: Manufactured from certified stainless steel grades ensuring excellent corrosion resistance and durability
• Precision Engineering: CNC machined to exact specifications with tight tolerances meeting international standards
• Comprehensive Size Range: Available in multiple sizes and pressure ratings to suit various piping applications
• Industry Compliance: Fully compliant with ASME, EN, DIN, JIS, and other international standards
• Versatile Applications: Suitable for oil & gas, chemical processing, power generation, water treatment, and other industrial applications
• Quality Assurance: 100% inspection and testing with comprehensive documentation and traceability
• Customization Available: Custom manufacturing services available for special requirements and non-standard dimensions
• Global Supply: Worldwide shipping with experienced logistics support ensuring safe and timely delivery

Dimensions & Sizes

Pipe		Flange Data				Hub Data		Raised Face	Drilling Data			Weight
Nominal Pipe Size		A	B	C	D	E	F	G	H	I	J
	Outside Diameter	Overall Diameter	Inside Diameter	FlangeThickness min	Overall Length	Diameter at Weld Bevel	Hub Diameter	Face Diameter	Number of Holes	Bolt Hole Diameter	Diameter of Circle of Holes	kg/piece
	in	in	in	in	in	in	in	in		in	in
	mm	mm	mm	mm	mm	mm	mm	mm		mm	mm
1/2	0.840 21.30	3.500 88.90	0.620 15.70	0.44 11.2	1.880 47.80	0.840 21.30	1.190 30.20	1.380 35.00	4	0.620 15.70	2.380 60.45	0.48
3/4	1.050 26.70	3.880 98.60	0.820 20.80	0.5 12.7	2.060 52.30	1.050 26.70	1.500 38.10	1.690 42.90	4	0.620 15.70	2.750 69.85	0.71
1	1.315 33.40	4.250 108.0	1.050 26.70	0.56 14.2	2.190 55.60	1.320 33.50	1.940 49.30	2.000 50.80	4	0.620 15.70	3.120 79.25	1.01
1-1/4	1.660 42.20	4.620 117.3	1.380 35.10	0.62 15.7	2.250 57.15	1.660 42.20	2.310 58.70	2.500 63.50	4	0.620 15.70	3.500 88.90	1.33
1-1/2	1.900 48.30	5.000 127.0	1.610 40.90	0.69 17.5	2.440 62.00	1.900 48.30	2.560 65.00	2.880 73.15	4	0.620 15.70	3.880 98.60	1.72
2	2.375 60.30	6.000 152.4	2.070 52.60	0.75 19.1	2.500 63.50	2.380 60.45	3.060 77.70	3.620 91.90	4	0.750 19.10	4.750 120.7	2.58
2-1/2	2.875 73.00	7.000 177.8	2.470 62.70	0.88 22.4	2.750 69.85	2.880 73.15	3.560 90.40	4.120 104.6	4	0.750 19.10	5.500 139.7	4.11
3	3.500 88.90	7.500 190.5	3.070 78.00	0.94 23.9	2.750 69.85	3.500 88.90	4.250 108.0	5.000 127.0	4	0.750 19.10	6.000 152.4	4.92
3-1/2	4.000 101.6	8.500 215.9	3.550 90.20	0.94 23.9	2.810 71.40	4.000 101.6	4.810 122.2	5.500 139.7	8	0.750 19.10	7.000 177.8	6.08
4	4.500 114.3	9.000 228.6	4.030 102.4	0.94 23.9	3.000 76.20	4.500 114.3	5.310 134.9	6.190 157.2	8	0.750 19.10	7.500 190.5	6.84
5	5.563 141.3	10.00 254.0	5.050 128.3	0.94 23.9	3.500 88.90	5.560 141.2	6.440 163.6	7.310 185.7	8	0.880 22.40	8.500 215.9	8.56
6	6.625 168.3	11.00 279.4	6.070 154.2	1  25.4	3.500 88.90	6.630 168.4	7.560 192.0	8.500 215.9	8	0.880 22.40	9.500 241.3	10.6
8	8.625 219.1	13.50 342.9	7.980 202.7	1.12 28.4	4.000 101.6	8.630 219.2	9.690 246.1	10.62 269.7	8	0.880 22.40	11.75 298.5	17.6
10	10.75 273.0	16.00 406.4	10.02 254.5	1.19 30.2	4.000 101.6	10.75 273.0	12.00 304.8	12.75 323.8	12	1.000 25.40	14.25 362.0	24
12	12.75 323.8	19.00 482.6	12.00 304.8	1.25 31.75	4.500 114.3	12.75 323.8	14.38 365.3	15.00 381.0	12	1.000 25.40	17.00 431.8	36.5
14	14.00 355.6	21.00 533.4	To be specified by purchaser	1.38 35.1	5.000 127.0	14.00 355.6	15.75 400.1	16.25 412.7	12	1.120 28.40	18.75 476.3	48.4
16	16.00 406.4	23.50 596.9		1.44 36.6	5.000 127.0	16.00 406.4	18.00 475.2	18.50 469.9	16	1.120 28.40	21.25 539.8	60.6
18	18.00 457.2	25.00 635.0		1.56 39.6	5.500 139.7	18.00 457.2	19.88 505.0	21.00 533.4	16	1.250 31.75	22.75 577.9	68.3
20	20.00 508.0	27.50 698.5		1.69 42.9	5.690 144.5	20.00 508.0	22.00 558.8	23.00 584.2	20	1.250 31.75	25.00 635.0	84.5
24	24.00 609.6	32.00 812.8		1.88 47.8	6.000 152.4	24.00 609.6	26.12 663.4	27.25 692.1	20	1.380 35.10	29.50 749.3	115
Class150

Notes:

Dimension B corresponds to the pipe inside diameter. Values quoted assume 40S/Standard wall thickness.

Weights are based on manufacturer’s data and are approximate.

Flat face flanges may be provided at full thickness, C, or with raised face removed (the latter is nonstandard).

 

This flange is available in a comprehensive range of sizes and pressure ratings to accommodate diverse piping system requirements. Our manufacturing capabilities allow us to produce both standard and custom dimensions.

Available Sizes: Wide range from small bore to large diameter

Pressure Ratings: Multiple pressure classes available (Class 150, 300, 600, 900, 1500, 2500, and PN ratings)

Connection Types: Suitable for welding, threading, or slip-on connections depending on flange type

For detailed dimension tables and technical drawings, please contact our technical support team. We can provide comprehensive dimensional specifications according to your required standard (ASME, EN, DIN, JIS, etc.).

Applications

This flange is ideal for use in:

• Oil & Gas Industry: Upstream, midstream, and downstream applications
• Chemical & Petrochemical: Process piping, reactors, and storage systems
• Power Generation: Conventional and renewable energy facilities
• Water Treatment: Municipal and industrial water systems
• Pharmaceutical: Sanitary process applications
• Food & Beverage: Hygienic piping systems
• Marine & Offshore: Shipbuilding and offshore platforms
• General Industry: Manufacturing, HVAC, and building services

Quality Assurance

We maintain the highest standards of quality control throughout the manufacturing process:

• ISO 9001:2015 certified manufacturing facility
• 100% material traceability with heat number tracking
• Comprehensive testing including chemical analysis, mechanical testing, and non-destructive examination
• Third-party inspection available (TPI, LPI, SGS, BV, etc.)
• Complete documentation package including MTC 3.1, test certificates, and dimension reports

FAQ

1. What materials are used for F316 4"Raised Face?

Our F316 4"Raised Face is manufactured from high-quality stainless steel grades including F304, F304L, F316, F316L, and other equivalent materials according to international standards. Material certificates are provided with each order.

2. What standards does this flange comply with?

This flange is manufactured in compliance with major international standards including ASME B16.5, ASME B16.47, EN 1092-1, DIN standards, JIS B2220, and HG/T standards. We can provide third-party inspection certificates upon request.

3. What is the delivery time?

Standard sizes are typically available from stock with 3-7 days delivery. Custom orders require 15-30 days depending on specifications and quantity. Rush orders can be accommodated with additional coordination.

4. Can you provide custom dimensions?

Yes, we offer custom manufacturing services. We can produce flanges according to your specific drawings and requirements. Our engineering team can also assist with design optimization.

5. What quality certifications do you provide?

We provide comprehensive documentation including Material Test Certificates (MTC), Third-Party Inspection Reports (TPI), Dimension Reports, and Pressure Test Certificates. All products comply with international quality standards.

Why Choose Our Flanges?

With decades of experience in manufacturing industrial piping components, we have established ourselves as a trusted supplier of high-quality flanges worldwide. Our commitment to excellence is reflected in:

• Technical Expertise: Experienced engineering team providing technical support and custom solutions
• Manufacturing Excellence: State-of-the-art facilities with advanced CNC machining and testing equipment
• Quality Focus: Rigorous quality control at every stage from raw material to finished product
• Customer Service: Responsive support team ensuring smooth order processing and after-sales service
• Competitive Pricing: Direct manufacturer pricing with no intermediary markups
• On-Time Delivery: Efficient production planning and reliable logistics partnerships