| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard | 
			| GB/T 21412.4-2013 | English | 4394 | Add to Cart | Days<=10 | Petroleum and natural gas industries -- Design and operation of subsea production systems -- Part 4: Subsea wellhead and tree equipment | GB/T 21412.4-2013 | Valid | GB/T 21412.4-2013 |