This is the description of bs1387 carbon steel tubing
Nominal bore Outside diameter Thickness Mass
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 13.60 13.90 1.80 2.30 2.90 0.515 0.641 0.765
3/8 10 17.10 17.40 1.80 2.30 2.90 0.670 0.839 1.020
1/2 15 21.40 21.70 2.00 2.60 3.20 0.947 1.210 1.440
3/4 20 26.90 27.20 2.30 2.60 3.20 1.380 1.560 1.870
1 25 33.80 34.20 2.60 3.20 4.00 1.980 2.410 2.940
1 1/4 32 42.50 42.90 2.60 3.20 4.00 2.540 3.100 3.800
1 1/2 40 48.40 48.80 2.90 3.20 4.00 3.230 3.570 4.380
2 50 60.20 60.80 2.90 3.60 4.50 4.080 5.030 6.190
2 1/2 65 76.00 76.60 3.20 3.60 4.50 5.710 6.430 7.930
3 80 88.70 89.50 3.20 4.00 5.00 6.720 8.370 10.300
4 100 113.90 114.90 3.60 4.50 5.40 9.750 12.200 14.500
5 125   140.60   5.00 5.40   16.600 17.900
6 150   166.10   5.00 5.40   19.700 21.300
Composition Carbon 0.20% Max
Manganese 1.20% Max
Phosphorus 0.045% Max

Sulphur 0.045% Max

1.In the actual procurement process, some customers may tend towards a high level requirement of pipe body in certain specific applications. Nevertheless, in the vegetable greenhouse construction field, there seems not too strict requirements of the flatness of the pipe. For example, with reference to the common black round pipe, we are always ready to offer the late tube straightening processing services. The difference before and after the tube straightening is less than 1.5mm per meter.

2.Our black pipe is generally manufactured cold formed. As per your specific requirements, we are able to provide hot finished one through distressing, strictly following the standard of EN10210. With reference to the treatment for certain large welding seam, we tend to adopt the normalizing processing method for distressing to improve the whole effectiveness of pipes for the actual purposes. You can directly inform us of your various needs, and we will try to follow your requirements for a variety of pipe processing treatments.

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