Implementation standards for pipeline products

API SPEC 5L Pipeline Steel Pipe Specification ISO 3180

Petroleum and natural gas industries - Steel pipes for pipeline transportation systems

GB/T9711.1

Petroleum and natural gas industries - Technical delivery conditions for steel pipes for transportation - Part 1

GB/T9711.2

Petroleum and natural gas industries - Technical delivery conditions for steel pipes for transportation - Part 2

GB/T9711.3

Petroleum and natural gas industries - Technical delivery conditions for steel pipes for transportation - Part 3

chemical composition

Mechanical properties