This is the description of bs1387 gi pipes thickness for class c
  Type  ERW Pipe
  Size  OD  (mm):15-200
 Wall Thickness (mm):0.6-3.0
 ZINC COATED (g/m2):40-100
  Standard  BS1387
  Section shape  Round
  Steel material  Q195 Q235
  Length  5.8M, 6M, 11.8M, 12M or customized length

Chemical Requirements and mechanical properties

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  Lo=5.65√SoA(min)
0.20% 1.20% 0.05% 0.05% 320 to 460 N/mm2 195 N/mm2 20%

1.The thickness of galvanized steel pipe is thin with a lower price. As it has a thin thickness, the raw material is less used compared with that of hot dipped galvanized steel pipe. Hot dipped galvanized steel pipe is in contrary to the product of pre galvanized steel pipe in terms of price as well as their properties. According to preceding discuss, we have already known that the price of pre galvanized steel pipe is lower. Besides, we have many experience in producing galvanized steel pipe with many years and we also have lots of cutting-edge advantages over other steel pipe manufacturers in China.

2.With skillful production experience and continuous innovation in the processing technology, our products have better quality assurance. For instance, our pre galvanized pipe looks much brighter, much smoother, and much flatter, conducive to the late processing treatment of pipes, such as painting, electrostatic spraying and etc, so as to ensure the better adhesion performance and nearly perfect surface effect of finished pipes. In addition, we are able to offer various customized pipes as per your personal requirements so as to maximize the effectiveness of the actual application in real life.

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