Marine engineering

The structure steel pipe has hot – rolled seamless steel tube and welded steel tube.The seamless steel tube for structure is divided into two types according to the provisions of “seamless steel tube for structure”

Standard: API SPEC 5CT API 5CT pipe Size (mm): Outer Dimensions: 6.0mm – 219.0mm Wall Thickness: 1.0mm – 30 mm Length: max 12000mm Application: gas, water and oil transportation in both oil and natural gas. The main steel grade of API 5CT: API 5CT J55, API 5CT K55, API 5CT N80, API 5CT L80, API 5CT P110.

4130 is a common composite steel pipe with a very wide range of applications. It is mainly composed of iron, carbon and the addition of other alloying elements such as chromium, molybdenum and silicon to improve its mechanical properties and corrosion resistance.

Stainless Steel 446 is a ferritic, non-heat treatable stainless steel with excellent resistance to high-temperature oxidation, sulfur-bearing gases, and many industrial atmospheres.