Line pipe Standard: API Spec 5L - Pipeline Steel Pipe Specification GB/T9711 - Steel Pipe Grade for Oil and Gas Industry Pipeline Delivery Systems:

Boiler pipe Standard: ASME SA106 - seamless carbon steel nominal pipe ASME SA179 - heat exchanger and condenser seamless cold pull low carbon steel pipe ASME SA192 - high pressure seamless carbon steel boiler tube ASME SA210 - Boiler and superheater with seamless medium carbon steel pipe ASME SA213 - Boiler, superheater and heat exchanger with seamless ferrite and Auschwitz alloy steel tube ASME SA335 - high temperature with seamless ferroitin alloy steel nominal tube DIN17175 - seamless steel pipe EN10216-2 made of heat-resistant steel - Non-alloy steel and alloy

Tube/Pipe for fertilizer equipments and petrochemical industry Standard: ASTM A106 - Seamless carbon steel pipe ASTM A213 - Boiler, superheater and heat exchanger with seamless ferrite and Auschwitz alloy steel pipe ASTM A333 - low temperature seamless and welded nominal steel pipe

Engineering, mechanical steel pipe Mechanics and Structure tube/Pipe Standard: EN10210 - Non-alloy and fine grain structure steel thermoformed structural tube (hollow material) EN10025 - Hot-rolled structural steel product EN10297 - seamless steel pipe ASTM A519 for mechanical and general engineering purposes - seamless carbon steel and alloy steel mechanical tube GB/ T1591 - Low alloy high-strength structural steel GB/T8162 - structural seamless steel pipe

Tube/Pipe for gas cylinder Standard: ASTM A519 - Seamless carbon steel and alloy steel mechanical tube EN10297 - Seamless steel pipe DOT-3AA/3AAX for mechanical and general engineering purposes - Seamless cylinder specification GB18248 - Seamless steel pipe GB28884 for cylinders - Seamless steel pipes for large volume cylinders

OCTG Standard: API Spec 5CT - Tubing, Casing Specification Grade