EN 10255 - Non-alloy Steel Tubes for Welding and Threading - Dimensions
BS 1387:1985 has been withdrawn and replaced with the European standard EN 10255:2004 (implemented by UK national standard body as BS EN 10255:2004 "Non-alloy steel tubes suitable for welding or threading"). The table below gives the corresponding types in BS 1387 and EN 10255.
| EN 10255 L | |
| EN 10255 L1 | |
| EN 10255 L2 | BS 1387 Light |
| EN 10255 Medium | BS 1387 Medium |
| EN 10255 Heavy | BS 1387 Heavy |
Dimensions and weight of steel tubes according the British Standard - BS 1387:1985 "Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads" can be found in the table below:
For full table with Medium and Heavy Weight - rotate the screen!
| Nominal bore | Outside diameter | Thickness | Weight | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Light | Medium/ Heavy | Light | Medium | Heavy | Light | Medium | Heavy | ||
| in | mm | mm | mm | mm | mm | mm | kg/m | kg/m | kg/m |
| 1/4 | 8 | 13.6 | 13.9 | 1.80 | 2.3 | 2.9 | 0.515 | 0.641 | 0.765 |
| 3/8 | 10 | 17.1 | 17.4 | 1.80 | 2.3 | 2.9 | 0.670 | 0.839 | 1.020 |
| 1/2 | 15 | 21.4 | 21.7 | 2.00 | 2.6 | 3.2 | 0.947 | 1.210 | 1.440 |
| 3/4 | 20 | 26.9 | 27.2 | 2.30 | 2.6 | 3.2 | 1.380 | 1.560 | 1.870 |
| 1 | 25 | 33.8 | 34.2 | 2.60 | 3.2 | 4.0 | 1.980 | 2.410 | 2.940 |
| 1 1/4 | 32 | 42.5 | 42.9 | 2.60 | 3.2 | 4.0 | 2.540 | 3.100 | 3.800 |
| 1 1/2 | 40 | 48.4 | 48.8 | 2.90 | 3.2 | 4.0 | 3.230 | 3.570 | 4.380 |
| 2 | 50 | 60.2 | 60.8 | 2.90 | 3.6 | 4.5 | 4.080 | 5.030 | 6.190 |
| 2 1/2 | 65 | 76.0 | 76.6 | 3.20 | 3.6 | 4.5 | 5.710 | 6.430 | 7.930 |
| 3 | 80 | 88.7 | 89.5 | 3.20 | 4.0 | 5.0 | 6.720 | 8.370 | 10.300 |
| 4 | 100 | 113.9 | 114.9 | 3.60 | 4.5 | 5.4 | 9.750 | 12.200 | 14.500 |
| 5 | 125 | 140.6 | 5.0 | 5.4 | 16.600 | 17.900 | |||
| 6 | 150 | 165.1 | 5.0 | 5.4 | 19.700 | 21.300 | |||
The standard is applicable to tubes of nominal size DN8 to DN150 in light, medium and heavy thickness.
- The BS 1387:1985 specification for screwed and socket steel tubes and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads.
Related Topics
• Codes and Standards
Piping codes and standards - ASME, ANSI, ASTM, AGA, API, AWWA, BS, ISO, DIN and more..
• Dimensions
Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more.
• Piping Systems
Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams.
Related Documents
American vs. British Piping Standards
US American (ASTM) vs. British (BSi) piping standards - specifications, grades and material descriptions.
ANSI Schedule 40 Steel Pipes - Dimensions
Internal and external diameters, areas, weights, volumes and number of threads for ANSI schedule 40 steel pipes.
ANSI Schedule 80 Steel Pipes - Dimensions
Internal and external diameters, areas, weights, volumes and number of threads for schedule 80 steel pipes.
ASME/ANSI B36.10/19 - Carbon, Alloy and Stainless Steel Pipes - Dimensions
Pipe sizes, inside and outside diameters, wall thickness, schedules, moment of inertia, transverse area, weight of pipe filled with water - U.S. Customary Units.
ASTM A53 B Carbon Steel Pipes - Allowable Pressure vs. Schedule and Size
Maximum working pressure of carbon steel pipe at temperature 400oF.
ASTM International - Standards for Steel Pipes, Tubes and Fittings
The ASTM standards covers various types of steel pipes, tubes and fittings for high-temperature services, ordinary use and special applications such as fire protection use
BSi - Pipe, Tube and Fittings Standards and Specifications
British standards and specifications for pipe, tube and fittings.
EN 10241 - Steel Threaded Pipe Fittings
EN 10241 specifies requirements for screw threaded fittings.
EN 10255 - Non-alloy Steel Tubes for Welding and Threading - Dimensions
Dimensions and weights of steel tubes according BS EN 10255.
EN 10255 - Non-alloy Steel Tubes for Welding and Threading - Dimensions
Dimensions and weights of steel tubes according BS EN 10255.
EN 10312 - Welded Stainless Steel Tubes for the Conveyance of Aqueous Liquids Including Water for Human Consumption - Dimensions
Dimensions of welded stainless steel tubes according EN 10312.
Hot Water Heating Systems - Online Design Application
Free online design tool for designing hot water heating systems - metric units.
Hot Water Heating Systems - Online Design Application, Imperial Units
Online design tool for hot water heating systems.
Hot Water Heating Systems - Pressure Loss in Steel Pipes
Pressure loss nomogram for hot water steel pipes.
Schedule - Terminology
Introduction to the schedule terminology of pipes.
Sizing Steam Pipes (kg/h)
Steam is a compressible gas where pipe line mass flow capacity depends on steam pressure.
Stainless Steel Pipes - Dimensions and Weights
Dimensions, wall thickness and weights of stainless steel pipes according to ASME B36.19 Stainless Steel Pipes.
Steel Pipes - Heat Loss Diagram
Heat loss from steel pipes and tubes - dimensions 1/2 to 12 inches.
Steel Pipes - Maximum Water Flow Capacities vs. Size
Maximum water flow capacities in steel pipes - pipe dimensions ranging 2 - 24 inches.
Steel Pipes - Temperature Expansion
Calculate temperature expansion with carbon steel pipes.
Steel Pipes Schedule 40 - Friction Loss vs. Water Flow Diagram
Friction loss and velocity diagrams - in imperial (psi/100 ft, ft/s) and SI (Pa/100m, m/s) units.
Steel Pipes Schedule 40 - Pressure Loss
Water flow and pressure loss in schedule 40 steel pipes - Imperial and SI units - gallons per minute, liters per second and cubic meters per hour.
Welded Steel Pipes - Weights
Nominal weights of welded steel pipes ranging 26 - 60 inches.