Marine engineering

API 5L X70 PSL2 pipes are widely used in the oil and gas industry, including oil and gas fields, refineries, natural gas transportation and other fields.

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”

ASTM A213 T5 and T5b steel pipe is a seamless ferrite and austenite alloy steel pipe, mainly used in high temperature and high pressure working environment such as boilers, superheaters and heat exchangers.

ASTM A333 and ASTM A334 are both specifications for seamless and welded carbon and alloy steel pipes used for low-temperature service. Specifically, ASTM A333 covers a range of steel grades suitable for temperatures as low as -50°F (-45°C), while ASTM A334 is intended for temperatures as low as -150°F (-101°C).