API 5L pipe

API 5L General Details

 

Grade	Chemical Composition								Yield Strength	Tensile Strength	Yield to Tensile	Elongation
	C	Si	Mn	P	S	V	Nb	Ti	min. (KSI)	min. (KSI)	Ratio (max)	%
API 5L X52	0.16	0.45	1.65	0.020	0.010	0.07	0.05	0.04	52	66	0.93	21
API 5L X56	0.16	0.45	1.65	0.020	0.010	0.07	0.05	0.04	56	71	0.93	19
API 5L X60	0.16	0.45	1.65	0.020	0.010	0.08	0.05	0.04	60	75	0.93	19
API 5L X65	0.16	0.45	1.65	0.020	0.010	0.09	0.05	0.06	65	77	0.93	18
API 5L X70	0.17	0.45	1.75	0.020	0.010	0.10	0.05	0.06	70	82	0.93	17

The API SPECIFICATION 5L spec offers standards for pipeline ideal for usage in communicating gas, water, as well as oil in the gas and also oil markets. The API SPEC 5L covers smooth and also bonded steel line pipe. It comes with a plain-end, threaded-end, as well as belled-end pipe, in addition to through-the-flowline (TFL) pipe, and also pipe with ends gotten ready for use with special combinings.

 

Pipe made to ASTM106 Quality A or B are not interchangable with API 5L. Needs to API 5L X grades are a lot more rigorous; rolled qualities are not appropriate as well as rework is not enabled. Furthermore, certain interest is given to strength as well as sturdiness tests for sour solutions as well as greater stress & temperature level classes.

 

Toughness Levels & Desulphurization

 

Manganese sulphides are normal incorporations in all manganese alloyed steels. Since they have the tendency to segregate causing decreased impact toughness, sulphure material needs to be lessened. We define maximum 0.007%.

 

API 5L Conveniences & Applications

 

Gas, water and oil transport - favored in lengthy pipes due to inexpensiveness

Pipeline steel - resistance to break propogation

Line Pipeline/ Sour Company Line Piping

 

 

 

API Criterion Requirements for Line Pipeline

 

The American Oil Institute spec API 5L addresses smooth as well as welded steel line pipe for pipeline transportation systems in the oil as well as natural gas markets. API 5L is appropriate for communicating gas, water, and also oil.

 

Requirements for API 5L stick to the International Organization for Standardization ISO 3183, standardizing pipeline transport systems within the products, tools and offshore structures for gas, petroleum, and petrochemical markets. When authoring the specifications, the technical committee identified that there are 2 fundamental Product Requirements Degrees (PSL) of technical demands and also for that reason created PSL 1 and PSL 2. PSL 1 is a basic high quality for line pipeline where PSL 2 consists of added chemical, mechanical properties, as well as screening needs.

 

Qualities covered by this requirements are A25, A, B as well as "X" Qualities X42, X46, X52, X56, X60, X65, X70, and X80. Both digit number following the "X" suggests the Minimum Yield Strength (in 000's psi) of pipe created to this grade.