Facebook Youtube Linkedin Reddit Instagram

Welcome to ALLLAND Steel Pipe Co., Ltd.

sales@alllandsteel.com

OCTG Weight Chart(API 5CT Casing & Tubing Full Size Table)

Picture of gao zoe
gao zoe
Facebook Twitter Youtube

HOT PRODUCTS

CONTACT US

POPULAR ARTICLES

Table of Contents
octg weight chart

OCTG Weight Chart（API 5CT Casing & Tubing）

Casing Pipe Weight Chart

API 5CT Casing

OD (in) WT (in) Weight (lb/ft) Weight (kg/m) Note
4.5 0.205 9.41 14.01 Theoretical
4.5 0.244 11.1 16.52 Theoretical
4.5 0.275 12.42 18.48 Theoretical
4.5 0.304 13.64 20.29 Theoretical
4.5 0.33 14.71 21.89 Theoretical
4.5 0.361 15.97 23.77 Theoretical
4.5 0.394 17.29 25.73 Theoretical
4.5 0.438 19.02 28.3 Theoretical
4.5 0.5 21.38 31.81 Theoretical
4.5 0.562 23.66 35.2 Theoretical
4.5 0.625 25.89 38.52 Theoretical
5 0.205 10.51 15.64 Theoretical
5 0.244 12.41 18.46 Theoretical
5 0.275 13.89 20.67 Theoretical
5 0.304 15.26 22.71 Theoretical
5 0.33 16.47 24.51 Theoretical
5 0.361 17.9 26.64 Theoretical
5 0.394 19.4 28.87 Theoretical
5 0.438 21.36 31.78 Theoretical
5 0.5 24.05 35.79 Theoretical
5 0.562 26.66 39.67 Theoretical
5 0.625 29.23 43.49 Theoretical
5.5 0.205 11.6 17.27 Theoretical
5.5 0.244 13.71 20.4 Theoretical
5.5 0.275 15.36 22.86 Theoretical
5.5 0.304 16.89 25.13 Theoretical
5.5 0.33 18.24 27.14 Theoretical
5.5 0.361 19.83 29.51 Theoretical
5.5 0.394 21.51 32 Theoretical
5.5 0.438 23.7 35.27 Theoretical
5.5 0.5 26.72 39.77 Theoretical
5.5 0.562 29.67 44.14 Theoretical
5.5 0.625 32.57 48.47 Theoretical
6.625 0.205 14.07 20.93 Theoretical
6.625 0.244 16.64 24.77 Theoretical
6.625 0.275 18.67 27.78 Theoretical
6.625 0.304 20.54 30.57 Theoretical
6.625 0.33 22.21 33.04 Theoretical
6.625 0.361 24.17 35.97 Theoretical
6.625 0.394 26.24 39.05 Theoretical
6.625 0.438 28.97 43.11 Theoretical
6.625 0.5 32.74 48.71 Theoretical
6.625 0.562 36.43 54.2 Theoretical
6.625 0.625 40.09 59.65 Theoretical
7 0.205 14.89 22.16 Theoretical
7 0.244 17.62 26.22 Theoretical
7 0.275 19.77 29.42 Theoretical
7 0.304 21.76 32.38 Theoretical
7 0.33 23.53 35.01 Theoretical
7 0.361 25.62 38.12 Theoretical
7 0.394 27.82 41.4 Theoretical
7 0.438 30.72 45.72 Theoretical
7 0.5 34.74 51.7 Theoretical
7 0.562 38.68 57.55 Theoretical
7 0.625 42.59 63.38 Theoretical
7.625 0.205 16.26 24.2 Theoretical
7.625 0.244 19.25 28.65 Theoretical
7.625 0.275 21.61 32.15 Theoretical
7.625 0.304 23.79 35.4 Theoretical
7.625 0.33 25.73 38.29 Theoretical
7.625 0.361 28.03 41.71 Theoretical
7.625 0.394 30.46 45.32 Theoretical
7.625 0.438 33.65 50.07 Theoretical
7.625 0.5 38.08 56.67 Theoretical
7.625 0.562 42.43 63.14 Theoretical
7.625 0.625 46.77 69.59 Theoretical
8.625 0.205 18.45 27.46 Theoretical
8.625 0.244 21.86 32.53 Theoretical
8.625 0.275 24.55 36.53 Theoretical
8.625 0.304 27.04 40.24 Theoretical
8.625 0.33 29.26 43.54 Theoretical
8.625 0.361 31.89 47.45 Theoretical
8.625 0.394 34.67 51.59 Theoretical
8.625 0.438 38.33 57.04 Theoretical
8.625 0.5 43.43 64.62 Theoretical
8.625 0.562 48.44 72.08 Theoretical
8.625 0.625 53.45 79.53 Theoretical
9.625 0.205 20.64 30.72 Theoretical
9.625 0.244 24.47 36.41 Theoretical
9.625 0.275 27.49 40.9 Theoretical
9.625 0.304 30.29 45.07 Theoretical
9.625 0.33 32.79 48.79 Theoretical
9.625 0.361 35.75 53.2 Theoretical
9.625 0.394 38.88 57.85 Theoretical
9.625 0.438 43.02 64.01 Theoretical
9.625 0.5 48.77 72.57 Theoretical
9.625 0.562 54.45 81.02 Theoretical
9.625 0.625 60.13 89.48 Theoretical
10.75 0.205 23.11 34.39 Theoretical
10.75 0.244 27.4 40.78 Theoretical
10.75 0.275 30.79 45.82 Theoretical
10.75 0.304 33.95 50.51 Theoretical
10.75 0.33 36.76 54.7 Theoretical
10.75 0.361 40.09 59.66 Theoretical
10.75 0.394 43.62 64.9 Theoretical
10.75 0.438 48.28 71.85 Theoretical
10.75 0.5 54.79 81.52 Theoretical
10.75 0.562 61.21 91.08 Theoretical
10.75 0.625 67.65 100.66 Theoretical
11.75 0.205 25.3 37.65 Theoretical
11.75 0.244 30.01 44.66 Theoretical
11.75 0.275 33.73 50.2 Theoretical
11.75 0.304 37.2 55.35 Theoretical
11.75 0.33 40.29 59.95 Theoretical
11.75 0.361 43.95 65.4 Theoretical
11.75 0.394 47.83 71.17 Theoretical
11.75 0.438 52.97 78.81 Theoretical
11.75 0.5 60.13 89.48 Theoretical
11.75 0.562 67.22 100.02 Theoretical
11.75 0.625 74.33 110.6 Theoretical
13.375 0.205 28.86 42.95 Theoretical
13.375 0.244 34.25 50.96 Theoretical
13.375 0.275 38.51 57.3 Theoretical
13.375 0.304 42.48 63.21 Theoretical
13.375 0.33 46.02 68.48 Theoretical
13.375 0.361 50.22 74.73 Theoretical
13.375 0.394 54.67 81.36 Theoretical
13.375 0.438 60.57 90.13 Theoretical
13.375 0.5 68.82 102.4 Theoretical
13.375 0.562 76.98 114.54 Theoretical
13.375 0.625 85.19 126.76 Theoretical
16 0.205 34.61 51.51 Theoretical
16 0.244 41.1 61.15 Theoretical
16 0.275 46.23 68.79 Theoretical
16 0.304 51.01 75.9 Theoretical
16 0.33 55.28 82.26 Theoretical
16 0.361 60.35 89.8 Theoretical
16 0.394 65.73 97.81 Theoretical
16 0.438 72.86 108.42 Theoretical
16 0.5 82.85 123.28 Theoretical
16 0.562 92.75 138.01 Theoretical
16 0.625 102.72 152.85 Theoretical
20 0.205 43.38 64.55 Theoretical
20 0.244 51.53 76.68 Theoretical
20 0.275 57.99 86.28 Theoretical
20 0.304 64.01 95.24 Theoretical
20 0.33 69.39 103.25 Theoretical
20 0.361 75.79 112.77 Theoretical
20 0.394 82.58 122.88 Theoretical
20 0.438 91.59 136.29 Theoretical
20 0.5 104.23 155.09 Theoretical
20 0.562 116.78 173.77 Theoretical
20 0.625 129.45 192.62 Theoretical

Tubing Weight Chart

API 5CT Tubing

OD (in)WT (in)Weight (lb/ft)Weight (kg/m)Note
1.050.1131.131.68Theoretical
1.050.1331.31.94Theoretical
1.050.141.362.03Theoretical
1.050.1451.42.09Theoretical
1.050.1541.482.19Theoretical
1.050.1651.562.32Theoretical
1.050.1751.642.44Theoretical
1.050.2031.842.74Theoretical
1.050.2171.932.88Theoretical
1.050.2542.163.22Theoretical
1.050.32.413.58Theoretical
1.050.3372.573.82Theoretical
1.3150.1131.452.16Theoretical
1.3150.1331.682.5Theoretical
1.3150.141.762.62Theoretical
1.3150.1451.812.7Theoretical
1.3150.1541.912.84Theoretical
1.3150.1652.033.02Theoretical
1.3150.1752.133.17Theoretical
1.3150.2032.413.59Theoretical
1.3150.2172.553.79Theoretical
1.3150.2542.884.29Theoretical
1.3150.33.264.84Theoretical
1.3150.3373.525.24Theoretical
1.660.1131.872.78Theoretical
1.660.1332.173.23Theoretical
1.660.142.273.38Theoretical
1.660.1452.353.49Theoretical
1.660.1542.483.69Theoretical
1.660.1652.643.92Theoretical
1.660.1752.784.13Theoretical
1.660.2033.164.7Theoretical
1.660.2173.354.98Theoretical
1.660.2543.825.68Theoretical
1.660.34.366.49Theoretical
1.660.3374.777.09Theoretical
1.90.1132.163.21Theoretical
1.90.1332.513.74Theoretical
1.90.142.633.92Theoretical
1.90.1452.724.05Theoretical
1.90.1542.874.28Theoretical
1.90.1653.064.55Theoretical
1.90.1753.234.8Theoretical
1.90.2033.685.48Theoretical
1.90.2173.95.81Theoretical
1.90.2544.476.65Theoretical
1.90.35.137.64Theoretical
1.90.3375.638.38Theoretical
2.3750.1132.734.07Theoretical
2.3750.1333.194.74Theoretical
2.3750.143.344.98Theoretical
2.3750.1453.465.14Theoretical
2.3750.1543.665.44Theoretical
2.3750.1653.95.8Theoretical
2.3750.1754.126.12Theoretical
2.3750.2034.717.01Theoretical
2.3750.2175.017.45Theoretical
2.3750.2545.768.57Theoretical
2.3750.36.659.9Theoretical
2.3750.3377.3410.92Theoretical
2.8750.1133.344.96Theoretical
2.8750.1333.95.8Theoretical
2.8750.144.096.09Theoretical
2.8750.1454.236.3Theoretical
2.8750.1544.486.67Theoretical
2.8750.1654.787.11Theoretical
2.8750.1755.057.52Theoretical
2.8750.2035.88.63Theoretical
2.8750.2176.179.17Theoretical
2.8750.2547.1210.59Theoretical
2.8750.38.2612.29Theoretical
2.8750.3379.1413.61Theoretical
3.50.1134.096.09Theoretical
3.50.1334.797.12Theoretical
3.50.145.037.48Theoretical
3.50.1455.27.74Theoretical
3.50.1545.518.2Theoretical
3.50.1655.888.75Theoretical
3.50.1756.229.26Theoretical
3.50.2037.1510.65Theoretical
3.50.2177.6211.33Theoretical
3.50.2548.8113.11Theoretical
3.50.310.2615.27Theoretical
3.50.33711.3916.96Theoretical
40.1134.76.99Theoretical
40.1335.58.18Theoretical
40.145.788.6Theoretical
40.1455.988.89Theoretical
40.1546.339.42Theoretical
40.1656.7610.07Theoretical
40.1757.1610.65Theoretical
40.2038.2412.26Theoretical
40.2178.7813.06Theoretical
40.25410.1715.13Theoretical
40.311.8717.66Theoretical
40.33713.219.64Theoretical
4.50.1135.37.89Theoretical
4.50.1336.219.24Theoretical
4.50.146.539.71Theoretical
4.50.1456.7510.04Theoretical
4.50.1547.1510.65Theoretical
4.50.1657.6511.38Theoretical
4.50.1758.0912.04Theoretical
4.50.2039.3213.88Theoretical
4.50.2179.9414.78Theoretical
4.50.25411.5317.16Theoretical
4.50.313.4720.04Theoretical
4.50.3371522.32Theoretical

Drill Pipe Reference

OD (in)Grade TypeNominal Weight (lb/ft)kg/m
2 3/8API 5DP6.65 – 7.359.89 – 10.94
2 7/8API 5DP10.40 – 13.9015.47 – 20.69
3 1/2API 5DP13.30 – 15.8019.80 – 23.51
4API 5DP16.60 – 21.9024.70 – 32.58
5API 5DP19.50 – 25.6029.02 – 38.12

OCTG Weight Calculation Formula

OCTG weight is typically based on the theoretical steel pipe weight formula, which is used to calculate the unit weight of casing and tubing.

OCTG Weight Formula (Imperial Units, lb/ft; most commonly used in the API system)

W = 10.69 × (OD − WT) × WT

· W = weight (lb/ft)
· OD = outer diameter (inch)
· WT = wall thickness (inch)

OCTG Weight Formula (Metric Units, kg/m)

W = 0.02466 × (OD − WT) × WT

· W = weight (kg/m)
· OD = outer diameter (mm)
· WT = wall thickness (mm)

Engineering Note

This formula calculates only the weight of the pipe body; it does not include the weight of couplings and threads.

For quick engineering estimates, you can use our OCTG weight calculator tool to get instant results.

API 5CT Standard for OCTG Pipes

OCTG products are typically manufactured in accordance with the American Petroleum Institute (API) 5CT international standard, which is the most fundamental global standard for oil and gas casing and tubing.

Engineering Grade System:

  • J55 / K55 – Standard Grade
    • Low yield strength steel
    • Suitable for shallow wells and low-pressure formations
    • Widely used in cost-sensitive drilling projects
  • N80 – Intermediate Grade
    • Balanced strength and toughness
    • Common in medium-depth oil and gas wells
    • One of the most widely used OCTG grades globally
  • L80 – Corrosion Resistant Grade
    • Designed for sour service environments (H₂S)
    • Improved resistance to sulfide stress cracking (SSC)
    • Preferred in corrosive oilfields and gas wells
  • P110 – High Strength Grade
    • High collapse and tensile strength
    • Ideal for deep wells and high-pressure reservoirs
    • Frequently used in challenging offshore and deep drilling operations

J55 vs N80 vs P110 OCTG Steel Grade Comparison Table

These mechanical property ranges are based on American Petroleum Institute API 5CT specification for OCTG casing and tubing products.

ItemJ55N80P110
StandardAPI 5CTAPI 5CTAPI 5CT
Yield Strength (MPa)379 – 552552 – 758≥ 758
Tensile Strength (MPa)≥ 517≥ 689≥ 862
Strength LevelLowMediumHigh
Pressure RatingLowMediumHigh
Well DepthShallowMediumDeep
ApplicationBasic wellsConventional wellsHigh-pressure / deep wells
CostLowMediumHigh

FAQ – OCTG Weight Chart

Q1: What is OCTG weight per foot used for?

OCTG weight per foot is used in drilling engineering for casing load calculation, rig capacity planning, and transportation logistics in oil and gas projects.

Yes. OCTG dimensions, tolerances, and material grades are defined under American Petroleum Institute API 5CT specification.

Nominal weight is a theoretical value used for design, while actual weight may vary due to manufacturing tolerances and wall thickness variations.

Related Products

Tell us more about your project or the product you’re interested in.