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BS1387: The Comprehensive Standard for Screwed, Socketed, And Plain End Steel Tubes And Tubulars Suitable for Welding Or Screwing To BS 21 Pipe Threads

BS1387 is a standard for steel tubes and tubulars used in various applications. It covers screwed, socketed, and plain end types suitable for welding or screwing to BS 21 pipe threads. Tubes meeting this standard are durable, high-quality, and compliant with industry requirements, ensuring safety and reliability in diverse sectors like construction, engineering, and manufacturing.
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BS1387 is a widely recognized and respected standard for steel tubes and tubulars used across multiple industries. This comprehensive standard covers a range of applications, specifying requirements for screwed and socketed steel tubes, as well as plain end steel tubes suitable for welding or screwing to BS 21 pipe threads. The standard is essential in ensuring the quality, consistency, and compliance of steel tubes, which are crucial components in various projects and applications.

The BS1387 standard provides detailed guidelines on dimensions, materials, manufacturing processes, and mechanical properties of the tubes. Tubes conforming to this standard must undergo rigorous testing and inspection to ensure they meet the specified requirements. These include chemical composition analysis, mechanical testing, and dimensional checks.

The use of BS1387 steel tubes offers numerous benefits, such as durability, strength, and resistance to corrosion. These tubes are suitable for various applications, including structural support, fluid transportation, and gas distribution systems. They are widely used in the construction industry for scaffolding, fencing, and other temporary and permanent structures. In the manufacturing sector, these tubes serve as essential components in machinery, equipment, and vehicles.


The applications of BS1387 steel tubes and tubulars are extensive and diverse. In the construction industry, these tubes play a crucial role in providing structural support, creating stable frameworks for buildings, bridges, tunnels, and other infrastructure projects. They are also used extensively in scaffolding systems, enabling workers to access high-rise buildings and other hard-to-reach areas safely.

In addition to construction, these steel tubes are indispensable in the manufacturing sector. They are used in the production of various machinery, equipment, and vehicles, providing structural integrity and durability to these items. The tubes' ability to withstand high pressure and tension makes them suitable for use in hydraulic systems, pneumatic devices, and other power transmission applications.

BS1387 steel tubes are also employed in the transportation industry, particularly in the production of automotive components, ships, and aircraft. Their strength-to-weight ratio makes them ideal for creating lightweight yet robust structures that can withstand harsh operating conditions.

Furthermore, these tubes are utilized in the oil and gas industry for drilling operations and transportation of crude oil and natural gas. Their resistance to corrosion and ability to withstand high pressure make them suitable for use in pipelines and other related infrastructure.


Nominal boreOutside diameterThicknessWeight
LightMedium/
Heavy
LightMediumHeavyLightMediumHeavy
inmmmm
mm
mm
mm
mm
kg/m
kg/m
kg/m
1/4813.613.91.802.32.90.5150.6410.765
3/81017.117.41.802.32.90.6700.8391.020
1/21521.421.72.002.63.20.9471.2101.440
3/42026.927.22.302.63.21.3801.5601.870
12533.834.22.603.24.01.9802.4102.940
1 1/43242.542.92.603.24.02.5403.1003.800
1 1/24048.448.82.903.24.03.2303.5704.380
25060.260.82.903.64.54.0805.0306.190
2 1/26576.076.63.203.64.55.7106.4307.930
38088.789.53.204.05.06.7208.37010.300
4100113.9114.93.604.55.49.75012.20014.500
5125
140.6
5.05.4
16.60017.900
6150
165.1
5.05.4
19.70021.300
GradeChemical Composition (%)Mechanical Properties
BS1387

Carbon (C) max : 0.20%

Manganese (Mn) max : 1.20%

Phosphorus(P) max : 0.045%

Sulfur(S) max : 0.045%

Tensile Strength : 320 MPa-460MPa

Yield Strength : 195 MPa

Elongation : 20%


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