Line pipe

June 14, 2013 Definition and description, Line pipe No comments

Line pipe is a type of steel pipe that is used for transporting materials through pipelines across the country. Line pipe can be used to transport petroleum, natural gas, oil, and water. It is a durable pipe that must meet certain specifications and regulations. This pipe typically has a high strength and durability in order to withstand high pressures. At HYSP QCCO China Steel, we sell and distribute line pipe in a complete variety of sizes, lengths, diameters, and grades.

Standard: API SPEC 5L ISO3183.1 ISO3183.2 ISO3183.3
Usage: Used for oil,natural gas,industrial water,oxygen convey
Steel Grade： X42、X52、X60、X65、X70，X80
L245,L290,L320,L360,L390,L415,L480

Seamless steel tubes for pipeline service
Variety	Specification		Steel Grade	Executive Standard	Typical applications
	OD(mm)	WT(mm)
Fluid Pipe	48-1200	3.5-120	10#/20#/Q295/Q345	GB/T8163	Convey Gerneral Liquid and Gas
Seamless pipe line Pipeline for oil and natural gas			L245 L290 L320 L360 L390 L415L450 L480	GB/T9711.1 GB/T9711.2 GB/T9711.3 ISO3183-1 ISO3183-2 ISO3183-3	Used as oxygen, water, and oil delivery pipe in oil and natural gas industry.
			A B　C　X42 X46 X52　X56 X60　X65 X80	API SPEC 5L
			B C	ASTMA53　ASTMA106
Remarks: we also can produce it according to customer’s requirements.

What is Line pipe?

What is Line PipeLine pipe is a type of pipe that is manufactured from high strength carbon steel. It is typically made according to metallurgical specifications that were developed by the American Petroleum Institute (API). Line pipe can be used to build pipelines that transport a variety of resources including natural gas, oil, petroleum, and water. This pipe is available in a variety of diameters ranging from 2 inches to 48 inches. Line pipe can include either seamless or welded carbon steel or stainless steel piping. Because line pipe needs to withstand high pressures, there are important tests done on line pipe to ensure it meets all of the requirements of steel chemistry, strength, toughness, and dimensional characteristics. Using line pipe that meets the set criteria will ensure safe and reliable pipeline service.The size and diameter of line pipe that is required for a pipeline can vary based on the amount of gas or liquid that a pipe is intended to carry as well as the pressures that a line pipe must withstand. For example, in most cases a mainline, the principal pipeline that delivers natural gas, will require line pipe that is around 16 to 48 inches in diameter. Smaller pipelines that deliver gas to the mainline or take gas from a mainline can be constructed of 6 to 16 inch diameter line pipe. One can determine the necessary diameter required for a pipeline by considering the volume of gas or liquid that the line pipe will be carrying as well as the pressure at which this will be transported. The thickness requirements for line pipe are determined by the maximum operating pressure required for a pipeline. This is based on published standards and federal regulations. Following proper safety regulations when selecting and installing line pipe, will ensure proper pipeline operation and prevent dangerous or hazardous situations.

Mechanical Property：

Standard	Model	Tensile Strength（MPa）	Yield Strength（MPa）	Yield Strength Ratio	Tensile Stretch（％）	Ballistic Work Akv（J）	Heat Treatment State
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	quencher backfire
	X70	≥570	485～605	≤0.90	18	≥40	quencher backfire

Mechanical Property:

Standard	Model	Chemical Constituent（％）								CEV（％）
Standard	Model	C	Si	Mn	P	S	V	Nb	Ti	CEV（％）
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	agreement
	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