1998： Cangzhou North China Petroleum Pipe Material Company was established.
1999： The company went through the CSQA’s ISO9002 certification on August.
2001： The company acquired dual certification from API product system and ISO9001 quality system, and was credited with certificate for right of using API logo on October.
2001： The company obtained the membership of the Energy Ahead Network under China National Petroleum Corporation.
2001： The company was ranked as one of 100 enterprises strong in metal processing.
2001： The company honored as Star Enterprise in Xinhua district.
2002： The company experienced her first technical upgrading for her production line, adding a new line for heat treatment of casing and thread processing.
2002： Her registered trademark was preliminarily examined and approved by the State Trademark  Bureau on August.
2002： The CNPC Huabei Petroleum credited the title Excellent Enterprise to the company.
2002：The company honored as Star Enterprise in Xinhua district.
2003： The company invested 130 million yuan for the construction of new factory site. Advanced production lines were imported to build up a first-class petroleum casing production base domestically.
2003： The company acquired 4 patents, and one of them, ie, coating on coupling surface, addressed the problem of casing gluing to some extent.
2003：The company honored as Excellent Enterprise in Xinhua district.
2004： With 156 million yuan worth of further investment, the company imported major production facilities and managed to build up a first-class petroleum casing production base domestically, which enabled the company to be positioned among the top 5 in her sector in terms of production capacity. In the same year, the construction project was rated as one of key projects at both city and provincial level.
2004： Installation and commissioning of heat treatment production line was initiated early that year.
2004： Installation and commissioning for imported equipment were started on November.
2004：The company honored as Star Enterprise in Xinhua district.
2005： The newly established line began its trial production on March.
2005：CIS was fully introduced on September to speed up the company’s development.
2005：Cangzhou North China Petroleum Pipe Material Company was renamed as Dalipal Pipe Company.
2005：The company ranked fourth among domestic peers for her production capacity.
2006：The company was classified as hi and new-tech enterprise.
2006：The company resettled in a new modernized office building on January.