BS1387 ERW Structural Steel Pipe

BS 1387 structural pipes are British standard threaded and socketed steel pipes for conveying fluids. They come in two coating types: black (uncoated) or galvanized (zinc-coated). The pipe end treatments include plain ends, internal threaded ends, or external threaded ends, suitable for various connection methods.

BS1387 Structural Welded Pipe Specification

Outside Diameter:	21.4mm-508.0mm	Thickness:	1mm-30mm
Length:	3-12m	Secondary Or Not:	Non-secondary
Section Shape:	Round	Technique:	ERW
Ends Finish:	PE,BE	Surface Treatment:	Varnish painted,black painted
Alloy Or Not:	Non-alloy	Certification:	CE, ISO, BV, SGS, SONCAP
Place of Origin:	Henan, China	Grade:	Grade B, Q235, Q345, Q195
Standard:	BS1387,ASTM A53,API 5L,JIS G3454,BSEN10210,EN10219

Chemical composition and mechanical properties at room temperature
Chemical composition (Ladle)				Mechanical properties at room temperature
C Max.	Mn Max.	P Max.	S Max.	Tensile Strength, Rm	Yield Strength, Re (min.)	Elongation on Gauge Length L0 = 5.65 S0 A (min.)
%	%	%	%	N/mm2	N/mm2	%
0.2	1.2	0.045	0.045	320 to 460	195	20

BS1387 ERW Steel Pipe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BS 1387 Welded Steel Pipe Testing:

1. Tensile Performance Test
Measurement of Tensile Strength: Tensile strength is the stress corresponding to the maximum force applied.
Measurement of Upper Yield Strength: This can be determined from the force-extension curve or peak force display. It is defined as the stress corresponding to the maximum force before the first drop in force. Upper yield strength is calculated by dividing this force by the original cross-sectional area of the specimen.
Measurement of Elongation After Fracture: The fractured parts of the specimen should be carefully fitted together to align the axis. Special measures should be taken to ensure proper contact of the fractured parts before measuring the gauge length after fracture. The elongation after fracture is then calculated using the appropriate formula.

2. Flattening Performance Test
The specimen is placed between the two plates of the testing machine, ensuring that the edges of the specimen are allowed to be rounded or chamfered using a file or other methods. The width of the plates should exceed the width of the flattened specimen. The plates are moved in a direction perpendicular to the longitudinal axis of the pipe, with a movement rate not exceeding 25mm/min. After the test, the specimen is observed without using a magnifying glass. If no visible cracks are found, the specimen is deemed qualified. Minor cracking at the specimen edges should not be a basis for rejection.

Hot Tags: bs1387 erw structural steel pipe, China bs1387 erw structural steel pipe manufacturers, suppliers, Resistance Welded Pipe, P235GH P265GH P235TR1 ERW Tubes, Carbon Steel ASTM A53 GRADE B, JIS G3454 STPG370 ERW Steel Pipe, steel pipes, EN 10219 Structural Pipe