According to the ground conditions of the chemical wharf project in the Zhuangyuan’ao Port area of Wenzhou and special requirements of the wharf, slant rock-socketed piles with a slope of 1∶5～1∶6 were designed for the pile foundation. The construction job was successfully completed through taking very specific construction measures, such as the self-designed steel casing guide frame to control pile-hole inclination, percussion drilling with the cylindrical hollow hammer to sink the borehole, the rugby type tremie pipe to pour concrete, and so on. Pile-foundation inspection shows that the pile-foundation quality fully meets the specification. It provides valuable experiences for similar projects.