● API Tubing and Casing
　　　　　· Applicable standards）
　　　　　　　API SPEC 5CT and API SPEC STD 5B
　　　　　· Application
　　　　　　　The tubing is used to extract oil or natural gas from the well, while the casing is used to built up the wall of the oil (gas)well.

　　　
　　　　● Specialty tubular products for sectors other than petroleum industry
　　　　　·Tubes for Chemical Industry　　·Tubes for Oil Refining Industry　　·Tubes for Boiler-Making Purpose

　　　　● Dual-metal seamless steel Tubular Product


　　　　● Linepipes for transport service

● Specification Series of Casing

● Specification Series of Tubing