Baoji Petroleum Steel Pipe Company made technical specifications for the manufacturing of H-level riser and defined technical conditions for the steel plate in 2010. The riser can meet the drilling operation requirements 3,000m underwater.
 

    About CNPC:

    CNPC is China’s largest oil and gas producer and supplier, as well as one of the world’s major oilfield service providers and a globally reputed contractor in engineering construction. With a presence in almost 70 countries, they are seeking an even greater international role.They provide energy in a profitable manner, and always attach great importance to our social and environmental responsibilities.