Line pipe
Two performances are required for line pipe: resistance to super-high hydraulic pressure and low-temperature toughness, where breakage by ocean current, crustal movement, etc. is difficult. This deep-sea X70-grade steel pipe, which has compound characteristics of technically difficult performances, has been used for the Mediterranean Sea pipeline (between Spain and Algeria) for the first time in the world.
Product with the world's highest strength
We have developed line pipe X120 with the world's highest strength jointly with Exxon Mobil. High strength can make natural gas highly pressurized. This enables long-distance and large-volume transportation. Also, the structure itself can be weight-lightened. In this way, the installation cost can be greatly reduced.
Proving excellent corrosion resistance performance
We have proven the corrosion resistance performance of Super 13 chrome stainless steel pipe for line pipe jointly with Royal Dutch Shell. We provide not only the product, but also provide improvement of product reliability, reduction of total cost including local construction, and solutions including construction technology.
Pipeline in shields
A conduit with pressure of 1 Mpa or more is called a high-pressure pipeline. A special underground tunnel is built to cross rivers/bays, mountain areas, or dense city areas and a pipeline is placed in the tunnel. We provide high-quality and high-pressure pipeline based on the conduit design and construction technology proven by the welding technique from our steel pipe production technology, long-standing record, and technology development.