pipeline

API SPEC 5L-2011 is a standard of pipeline published by American Petroleum Institute. The standard is very common all over the world. Line pipe is to transport the oil, gas or water put out from the ground into petroleum and natural gas industry enterprises. Pipe line includes seamless steel pipe and welded steel pipe, the pipe end has flat end, threaded end and socket end. The connection method is stud welding, coupling connection, socket connection etc. The main material is B、X42、X46、X56、X65、X70.

Pipe Line


Specifications: 8-1240×1-200mm
Standard: API SPEC 5L  GB/T9711
Applications: It is used to transmit natural gas, water and petroleum in oil and natural gas industry.
Grades: B、X42、X52、X60、X65、X70 L245 L290 L320 L360 L390 L450 L485

Dimension Tolerance:

Types	Outer Diameter (D)		Wall Thickness(S)
	OD (mm)	Allowed Tolerance (mm)	OD(mm)	Allowed Tolerance (mm)
	≥60.3且S<20	±0.75%	≤73.0	+15%，－12.5%
	≥60.3且S≥20	±1.00%	>73.0且S<20	+15%，－12.5%
			>73.0且S≥20	+17.5%，－10

Mechanical Properties:

Standard	Grades	Tensile Strength (Mpa)	Yield Strength	Yield Ration	Elogation (%)	Impact Energy Akv (J)	Heat treatment condition
API SPEC 5L GB/T9711.2	B	≥415	245～440	≤0.80	22	≥40	normalizing
	X42	≥415	290～440	≤0.80	21	≥40	normalizing
	X52	≥460	360～510	≤0.85	20	≥40	normalizing
	X60	≥520	415～565	≤0.85	18	≥40	normalizing
	X65	≥535	450～570	≤0.90	18	≥40	normalizing
	X70	≥570	485～605	≤0.90	18	≥40	normalizing

Chemical Compositions:

Standard	Grade	Chemical Compositions								CEV(%)
		C	Si	Mn	P	S	V	Nb	Ti
API SPEC 5L GB/T9711.2	B	≤0.16	≤0.40	≤1.10	≤0.020	≤0.010	-	-	-	≤0.42
	X42	≤0.17	≤0.40	≤1.20	≤0.020	≤0.010	≤0.05	≤0.05	≤0.04	≤0.42
	X52	≤0.20	≤0.45	≤1.60	≤0.020	≤0.010	≤0.10	≤0.05	≤0.04	≤0.45
	X60	≤0.21	≤0.45	≤1.60	≤0.020	≤0.010	≤0.15	≤0.05	≤0.04	-
	X65	≤0.16	≤0.45	≤1.60	≤0.020	≤0.010	≤0.06	≤0.05	≤0.06	≤0.45
	X70	≤0.16	≤0.45	≤1.70	≤0.020	≤0.010	≤0.06	≤0.05	≤0.06	≤0.45

Tips:
1．0.015%≤Altot<0.06%；N≤0.012%；Al/N≥2/1；Cu≤0.25%；Ni≤0.30%；Cr≤0.30%；Mo≤0.10%
2．V+Nb+Ti≤0.15
3．X60、X65、X70 through consultation Mo≤0.35%