Flanges Weight Chart
Mcneil Instrument specializes in manufacturing a diverse range of flanges for demanding industrial and energy sector applications. With an extensive production capacity, we deliver large-diameter flanges in various sizes, shapes, and materials tailored to specific applications. Our products adhere to the highest quality standards, ensuring exceptional performance and durability.

Below is a detailed Weight and Dimension Chart for all types of flanges manufactured by Mcneil Instruments.
Types of Flanges with Dimensions and Weights
Type of Flange | Nominal Size (NPS) | Dimensions (DN mm) | Flange Thickness (mm) | Weight (Kg) |
KOC Approved Flanges | 1/2″ (15) | 15 | 11 | 1.2 |
Saudi Aramco Approved Flanges | 3/4″ (20) | 20 | 12 | 1.5 |
Takreer Approved Flanges | 1″ (25) | 25 | 13 | 2.1 |
ADNOC Approved Flanges | 2″ (50) | 50 | 15 | 3.8 |
BP Approved Flanges | 4″ (100) | 100 | 18 | 8.7 |
PDO Approved Flanges | 6″ (150) | 150 | 20 | 14.2 |
Technip Approved Flanges | 8″ (200) | 200 | 22 | 21.4 |
Sabic Approved Flanges | 10″ (250) | 250 | 25 | 32.1 |
Petro Rabigh Approved Flanges | 12″ (300) | 300 | 28 | 45.5 |
KNPC Approved Flanges | 16″ (400) | 400 | 32 | 68.3 |
Lamprell Approved Flanges | 20″ (500) | 500 | 36 | 91.7 |
Qatar Gas Approved Flanges | 24″ (600) | 600 | 40 | 120.5 |
Qatar Petroleum Flanges | 28″ (700) | 700 | 45 | 158.3 |
Gpic Flanges Approved | 30″ (750) | 750 | 50 | 180.2 |
Saudi Electric Company Flanges | 36″ (900) | 900 | 55 | 245.6 |
Dolphin Approved Flanges | 40″ (1000) | 1000 | 60 | 290.8 |
Flange Weight Chart Calculator
Formula:
Weight (Kg)=π×(R2−r2)×t×Density
Where:
RRR = Outer Radius, rrr = Inner Radius, ttt = Thickness
Density = Material density (e.g., Steel ~ 7.85 g/cm³)
Example Calculation:
For a flange with:
Outer Diameter: 200 mm, Inner Diameter: 150 mm, Thickness: 20 mm, Material: Steel
Weight (Kg)=3.1416×(1002−752)×20×0.00785
Weight (Kg)=3.1416×(10,000−5,625)×20×0.00785
Weight (Kg)=3.1416×4,375×20×0.00785
Weight (Kg)≈21.55Kg