BS1387 Steel Pipe

BS1387 is a British standard for welded black tubes. BS1387 is also known as EN 10255 hot dip galvanized steel pipe. This standard tube has excellent strength and durability. Pandapipe manufactures steel pipes in strict accordance with causal standards, carefully designed and manufactured for pipe quality and performance to provide you with the highest performance and service life for your project.

BS1387 Pipe Specifications

BS1387 standard steel pipe surface using hot dip galvanizing process. Excellent corrosion resistance. At the same time meet the highest standards, comprehensive specifications to meet a variety of needs. The specification covers the requirements of raw materials, manufacturing process, size, chemical composition and mechanical properties of steel pipes. The steel tubes supplied by Pandapipe are designed to be screwed into BS21 pipe threads. Different end types and joint connection methods are available.

BS1387-1985
Carbon Steel
Tube: Welded
Socket: Seamless or Welded
C (max)	0.20%
Mn (max)	1.20%
P (max)	0.045%
S (max)	0.045%
Tensile strength,Rm	320-460 N/mm2
Yield strength ,Re(min)	195 N/mm2
Elongation on gauge length	20%
Light tube	1/4”-4” DN8-DN100
Medium tube	1/4”-6” DN8-DN150
Heavy tube	1/4”-6” DN8-DN150
Light tube	1.8mm-3.6mm
Medium tube	2.3mm-5.0mm
Heavy tube	2.9mm-5.4mm
Random Length	4m-7m
Mill Length	≥6.4m
Approximate Length
Exact Length
On Thickness	Light tube: -8%
	Medium tube: -10%
	Heavy tube: -10%
On Mass	For quanlity of 150 M and over one size +/-4%
On Mass	For single tube: +10%/-8%
PE,BE,Thread & Coupled
Bare,Oiled,Mill Varnish,Hot-dip Galvanized,FBE,3LPE

BS1387 Steel pipe Dimensions Table

Pandapipe offers BS1387 steel pipes in a comprehensive range of sizes. The dimensions table covers details of dimensions, diameters, thicknesses and weights. You can select the suitable steel pipe size according to the table. From DN8-DN150, large diameter pipes for both parts and major projects can provide you with the perfect pipe.

Dimensions of Steel Tubes: Light
Nominal size	Designation of Thread	Outside Diameter		Thickness	Mass of Black Tube
(DN)	Designation of Thread	max.	min.	Thickness	Plain End	Screwed and Socketed
		mm	mm	mm	kg/m	kg/m
8	1/4	13.6	13.2	1.8	0.515	0.519
10	3/8	17.1	16.7	1.8	0.67	0.676
15	1/2	21.4	21	2	0.947	0.956
20	3/4	26.9	26.4	2.3	1.38	1.39
25	1	33.8	33.2	2.6	1.98	2
32	1 1/4	42.5	41.9	2.6	2.54	2.57
40	1 1/2	48.4	47.8	2.9	3.23	3.27
50	2	60.2	59.6	2.9	4.08	4.15
65	2 1/2	76	75.2	3.2	5.71	5.83
80	3	88.7	87.9	3.2	6.72	6.89
100	4	113.9	113	3.6	9.75	10
NOTE Dimensions and masses are in accordance with ISO 65 (light series 2).

Dimensions of Steel Tubes: Medium
Nominal Size of Thread	Designation of Thread	Outside Diameter		Thickness	Mass of Black Tube
(DN)	Designation of Thread	max.	min.	Thickness	Plain End	Screwed and Socketed
		mm	mm	mm	kg/m	kg/m
8	1/4	13.9	13.3	2.3	0.641	0.645
10	3/8	17.4	16.8	2.3	0.839	0.845
15	1/2	21.7	21.1	2.6	1.21	1.22
20	3/4	27.2	26.6	2.6	1.56	1.57
25	1	34.2	33.4	3.2	2.41	2.43
32	1 1/4	42.9	42.1	3.2	3.1	3.13
40	1 1/2	48.8	48	3.2	3.57	3.61
50	2	60.8	59.8	3.6	5.03	5.1
65	2 1/2	76.6	75.4	3.6	6.43	6.55
80	3	89.5	88.1	4	8.37	8.54
100	4	114.9	113.3	4.5	12.2	12.5
125	5	140.6	138.7	5	16.6	17.1
150	6	166.1	164.1	5	19.7	20.3
NOTE Maximum and minimum outside diameters meet the requirements of ISO 65.

Dimensions of steel tubes: heavy
Nominal size	Designation of Thread	Outside Diameter		Thickness	Mass of Black Tube
(DN)	Designation of Thread	max.	min.	Thickness	Plain End	Screwed and Socketed
		mm	mm	mm	kg/m	kg/m
8	1/4	13.9	13.3	2.9	0.765	0.769
10	3/8	17.4	16.8	2.9	1.02	1.03
15	1/2	21.7	21.1	3.2	1.44	1.45
20	3/4	27.2	26.6	3.2	1.87	1.88
25	1	34.2	33.4	4	2.94	2.96
32	1 1/4	42.9	42.1	4	3.8	3.83
40	1 1/2	48.8	48	4	4.38	4.42
50	2	60.8	59.8	4.5	6.19	6.26
65	2 1/2	76.6	75.4	4.5	7.93	8.05
80	3	89.5	88.1	5	10.3	10.5
100	4	114.9	113.3	5.4	14.5	14.8
125	5	140.6	138.7	5.4	17.9	18.4
150	6	166.1	164.1	5.4	21.3	21.9
NOTE Maximum and minimum outside diameters meet the requirements of ISO 65.

Chemical & Mechanical Requirements

The steel pipes manufactured by Pandapipe strictly comply with the chemical composition required by the BS1387 standard. The balance of chemical elements is strictly controlled, and their content and proportion are strictly monitored to ensure the strength, durability and corrosion resistance of the pipe. Ensure the quality of the pipe is consistent.

Chemical Composition (Ladle)
C	Mn	P	S
max.	max.	max.	max.
%	%	%	%
0.2	1.2	0.045	0.045

The mechanical properties of BS1387 steel pipe manufactured by Pandapipe are required by tensile strength, yield strength, elongation and hardness. During the manufacturing process, the performance of the pipe is strictly controlled through non-destructive testing, hydrostatic testing and other tests to ensure that the pipe can withstand the pressure and stress of its intended application.

Mechanical Properties At Room Temperature
Tensile	Yield	Elongation On Gauge Length
Strength, Rm	Strength Re(min.)	Lo=5.65 √So A (min.)
N/mm2	N/mm2	%
320 to 460	195	20

BS1387 Production Tolerance

The dimensional tolerance of BS1387 directly affects the assembly accuracy, performance and safety of the steel pipe. Covers inner and outer diameter tolerances, wall thickness tolerances and bending tolerances.

Outside diameter. Light tubes: as given in Table 3 Medium and heavy tubes: as given in Table 4 and Table 5 respectively

Thickness. Light tubes -8% Medium and heavy tubes -10 %

Mass. The mean consignment mass forquantities of 150 m and over of one size shall notdeviate by more than + 4 % from the mass oftheconsignment calculated from the masses given inTable 3, Table and Table 5 as appropriate. Nosingle tube shall deviate by more than 10 %from the mass given in Table 3, Table d andTable 5 as appropnate.

Length. Random lengths. When random lengths areordered, tubes shall be supplied in one of thefollowing ways: a) in random lengths from 4 m to 7 m; b) (for orders of over 150 m of any one size of tube) in random lengths from 4 m to 7 m butincluding short random lengths from l.8 mto 4 m provided that the number of suchlengths does not exceed 7.5 % of the totalnumber oflengths for DN 65 to DN 100inclusive, and 5 % for all other sizes. c) as for (b) but including tubes with twolengths joined together to make a randomlength, provided that the number of suchjointed lengths does not exceed 7.5 % of thetotal number oflengths for DN 65 to DN 100inclusive and 5 % for all other sizes.

Mill lengths. When mill lengths are requiredtubes shall be supplied in lengths of 6.4 mminimum. No tube shall exceed this length bymore than 150 mm. Approximate lengths. Where approximatelengths are required, either for screwed andsocketed tubes orfor plain end tubes, each tubeshall be within + 150 mm of the specifiedlength. Exact lengths. Where exact lengths arerequired either for screwed and socketedtubes or for plain end tubes, each tube shall bewithin +6mm of the specified length.

Application of BS1387

Chemical industry: In the chemical industry, BS1387 steel pipes are commonly used in the manufacture of chemical reactors, storage tanks and pipes, and maintenance and upgrading of chemical equipment.
Structural support and frame: BS 1387 steel pipe is stable and capable of bearing loads. Support and framing systems for building structures.
Mechanical parts: BS 1387 steel pipe production bracket, shaft and transmission system.

BS1387 Steel Pipe

BS1387 Steel Pipe

BS1387 Pipe Specifications

BS1387 Steel pipe Dimensions Table

Chemical & Mechanical Requirements

BS1387 Production Tolerance

Application of BS1387

Related Products

Our Advantages