Carbon Steel Pipe Classes

Sources: this site    Click:    Date: 2016-12-14 20:18:28

Carbon steel pipe also called mild steel pipe or low carbon steel pipe. Carbon steel pipe type there have seamless steel pipe, spiral steel pipe and ERW steel pipe. The most popular pipes are carbon steel seamless steel pipe. But according to different projects we should choose different pipes to control the cost. Seamless pipes are the most expensive. The ERW and spiral steel pipes is much cheaper.


Carbon content %

Classes of carbon steel

Carbon content %

Ultra-high carbon steel

1.00 – 2.00

High carbon steel

0.60 – 0.99

Medium carbon steel

0.30 – 0.59

Low carbon steel

0.16 – 0.29

Mild carbon steel

0.05 – 0.15


Mild steel pipe is a type of carbon steel pipe, though its carbon percentage is incredibly low (only about 0.2%). So, the two extreme ends of the carbon steel spectrum are low-carbon mild steel and high-carbon cast iron.