seamless and welded steel pipe pile
The steel pipe pile is a type of steel piling material. It is generally composed of one upper section pile, several middle section piles and one lower section pile. The section length is generally 12-15m.
The steel pipe pile can withstand large impact force and horizontal force. It is easy to penetrate hard soil layer and has high bearing capacity. The steel pipe pile length can be adjusted arbitrarily. Its weight is light, and it is convenient for loading and unloading transportation. It also has advantages of high strength, good rigidity, less soil squeezing, etc.
However, the steel pipe pile is susceptible to corrosion, so anti-corrosion treatment is required. The steel pipe pile is generally made of seamless steel pipe, and can also be rolled and welded by steel plates. The diameter of the steel pipe pile is generally 400-2000mm, and the thickness of the pipe wall is 6-50mm.
The main steel grades of seamless and welded steel pipe pile:
Standard | Steel grades | |||||
GB | Q235B | Q345B | ||||
API 5L PSL1 | A25 | Grade A | Grade B | X42 | X46 | X52 |
X56 | X60 | X65 | X70 | X80 | ||
API 5L PSL2 | Grade B | X42 | X46 | X52 | X56 | X60 |
X65 | X70 | X80 |
The steel pipe pile is a structural construction material. It is most widely used in onshore and offshore constructions, marine foundations / constructions, tower building, railway / highway construction, dock yard construction, sea works, marine works, oil and gas field foundations, structural support in special buildings, etc..