◆ Specialty tubular products for sectors other than petroleum industry　　　　
Tubes for Chemical Industry

Main application: Tubes for acidic and basic corrosion-resistant and elevated-temperature stress corrosion-resistant facilities as used by the makers for sulphuric acid, nitric acid, sodium carbonate and ethylene, etc.
Applicable product standards: Gb9948　 GB/T14976　 ASTMA213　 JISG3463

Tubes for Oil Refining Industry
Main application: Tubes for oil refining furnaces and oil refining-related heat exchanger tubular fittings and piping systems
Applicable product standards: Gb9948　 GB/T14976　 GB13296　 ASTM213

Tubes for Boiler-Making Purpose
Main application: Tubes for steam boilers and boiler piping systems with normal hi-pressure or above.
Applicable product standards: GB5310　 ASTMA213　 ASTMB163