Follow -on steel protects a section of thick bamboo

The utility model provides a follow -on steel protects a section of thick bamboo, includes barrel I, the columniform barrel II and the annular flat board of circle of round platform type, the macrostoma diameter of section of barrel I equals with the diameter of section of columniform barrel II, dull and stereotyped small circle diameter of section equals with the diameter of section of columniform barrel II, the open end of barrel II and the macrostoma of barrel I end pore free welded, dull and stereotyped suit is gone up and the seam crossing of welding at barrel II and barrel I at barrel I. Compared with the prior art, the utility model discloses set up the annular flat board of circle, this flat board can prevent that whole barrel from sinking, has played the effect of protection, simultaneously, change the outside shape that original steel protected a section of thick bamboo, improved the pile foundation construction straightness that hangs down, guarantee that the steel protects a section of thick bambo