API 5L Pipeline Specifications for these pipes regulate usage for standard Grade A and Grade B pipes, with Grade X indicating stronger variants for drilling, production and transport requirements for offshore, arctic, deep well or harsher environments. Under API 5L standard, we can regard API X70 steel plate/pipes as large diameter pipes. API X70 steel plate/pipes is a main type of steel for large diameter pipes.  API-X70 steel with the demands in mechanical properties of the pipes followed the API specification for grade X70 (YS is 485MPa, TS is from 600-750 MPa).

 

API5L X70 Material#1.8977	Comparison ofsteel grades
	EU 113	-
	NBN629	-
	DIN 17172	StE 480.7TM
	EN10208-2	L485MB

API 5L X70 steel chemical composition-% by  mass*
 

Grades	Material number	C max	Si max	Mn. mix	P max	S max
API 5L X70	1.8977	0.04-0.16	0.55	1.10-1.70	0.035	0.035

API 5L X70 steel mechanical properties
 

API 5L X70	Permissible yield point ratio	Yield Strength MPa(min)	Tensile Strength MPa	Elongation % (min)
	≤ 0.85	480	600 - 750	-

Delivery Condition: CR/TMCP/N/T/Q+T
 

API 5L X70 Pipeline Steel Plate Specifications:
Thickness: 6MM to 40MM,
Width: 1600mm to 3800mm,
Length: 3000mm to 18000mm

API 5L X70 Pipeline Steel Plate Main Application
 

1,Pipeline steel was mainly used to the transferring of oil and natural gas, product oil, urban pipe coal gas coal water slurry, chemical.
2,Engineering and construction, especially the medium of oil and natural gas transferring and urban pipe coal gas was inflammable.
3,Pipeline was used in certain corrosive condition, for example, marine line must resist the corrosion of seawater.
4,Chemical industry must resist the chemical corrosion. In addition, the performance of pipeline used in cold area was more strict than that in general condition.

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