Line pipe

Line pipes are used to transport oil and gas, water, mineral slurry and other fluids. Our line pipes are manufactured in accordance with API Spec 5L. Tubing and Casing, Line Pipes API SPEC 5L is a international standard specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.

What is Line Pipe

Line 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.

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API Spec 5CT Casing pipe
Application:
Conveying gas,water,and oil in both the oil and natural industries, Tubular goods for petroleum and natural gas industries
Production Standard, Grade, Steel No:
API 5L PSL1 L175/A25, L210/A, L245/B, L290/X42, L320/X46, L360/X52, L485/X70, PSL2 L245R/BR, L290N/X42N, L320N/X46N, L360N/X52N, L415/X60N
API 5CT PSL1, PSL2, PSL3, H40, J55, K55, N80
GB/T 9711.1 L175, L210, L245, L290, L320, L360
GB/T 9711.2 L245NB, L290NB, L360NB
GB/T 9711.3 L245NC, L290NC, L360NC
Delivery Condition:
Annealed, Normalized, Normalized and Tempered
Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness), Drift Test, Surface and Dimension Test,NDE, Hydrostatic Test, MT
Inspection and Tests Performed: View more…
5L – Chemical composition, Mechanical properties, Hydrostatic test, Dimensional testing, Visual inspection, Nondestructive inspection
5CT – Chemical composition, Tensile test, Flattening test, Hardness test, Impact test, Grain size determination, Harden ability, Sulfide stress-cracking test, Hydrostatic test, Dimensional testing, Visual inspection, Non-destructive examination(NDE)

Surface Treatment:
5L – Uncoated(bare), Temporary coating, Special coating, Oil-dip, Shot Blasting, Varnish
Size: We supply various line pipes including seamless line pipes
(OD from 2-3/8″ to 24″, steel grade A, B, X42 – X80)

Standard ： API SPEC 5L

Application ： It is used for conveying gas,water,and petroleum of both the oil and natural gas industries.

Standard	Product Specification Level	Steel grade	Chemical composition, %
Standard	Product Specification Level	Steel grade	C	Mn	P	S	Si	V	Nb	Ti	CEpcm
API 5L	PSL 1	L210 or A	≤ 0.22	≤ 0.90	≤ 0.030	≤ 0.030	–	–	–	–	≤ 0.25
		L245 or B	≤ 0.28	≤ 1.20	≤ 0.030	≤ 0.030	–	–	–	–	≤ 0.25
		L290 or x42	≤ 0.28	≤ 1.30	≤ 0.030	≤ 0.030	–	–	–	–	≤ 0.25
		L320 or X46	≤ 0.28	≤ 1.40	≤ 0.030	≤ 0.030	–	–	–	–	≤ 0.25
		L360 or X52	≤ 0.28	≤ 1.40	≤ 0.030	≤ 0.030	–	–	–	–	≤ 0.25
		L390 or X56	≤ 0.28	≤ 1.40	≤ 0.030	≤ 0.030	–	–	–	–	≤ 0.25
		L415 or X60	≤ 0.28	≤ 1.40	≤ 0.030	≤ 0.030	–	–	–	–	≤ 0.25
	PSL 2	L245Ror BR	≤ 0.24	≤ 1.20	≤ 0.025	≤ 0.015	≤ 0.40	c	c	≤ 0.04	≤ 0.25
		L290R or X42R	≤ 0.24	≤ 1.20	≤ 0.025	≤ 0.015	≤ 0.40	≤ 0.06	≤ 0.05	≤ 0.04	≤ 0.25
		L245N or BN	≤ 0.24	≤ 1.20	≤ 0.025	≤ 0.015	≤ 0.40	c	c	≤ 0.04	≤ 0.25
		L290N or X42N	≤ 0.24	≤ 1.20	≤ 0.025	≤ 0.015	≤ 0.40	≤ 0.06	≤ 0.05	≤ 0.04	≤ 0.25
		L320N or X46N	≤ 0.24	≤ 1.40	≤ 0.025	≤ 0.015	≤ 0.40	≤ 0.07	≤ 0.05	≤ 0.04	≤ 0.25
		L360N or X52N	≤ 0.24	≤ 1.40	≤ 0.025	≤ 0.015	≤ 0.45	≤ 0.10	≤ 0.05	≤ 0.04	≤ 0.25
		L390N or X56N	≤ 0.24	≤ 1.40	≤ 0.025	≤ 0.015	≤ 0.45	≤ 0.10	≤ 0.05	≤ 0.04	≤ 0.25
		L415N or X60N	≤ 0.24	≤ 1.40	≤ 0.025	≤ 0.015	≤ 0.45	≤ 0.10	≤ 0.05	≤ 0.04	协商 Negotiation
Note: c: The sum of the columbium [niobium], and vanadium contents shall not exceed 0.06% except that, by agreement between the purchaser and the manufacturer, an alternative maximum may be established.

Standard	Product Specification Level	Steel grade	Yield Strength (min), Mpa	Tensile Strength(min), Mpa
API 5L	PSL 1	L210 or A	210	335
		L245 or B	245	415
		L290 or x42	290	415
		L320 or X46	320	435
		L360 or X52	360	460
		L390 or X56	390	490
		L415 or X60	415	520
	PSL 2	L245Ror BR	245~450	415~760
		L290R or X42R	290~495	415~760
		L245N or BN	245~450	415~760
		L290N or X42N	290~495	415~760
		L320N or X46N	320~525	435~760
		L360N or X52N	360~530	460~760
		L390N or X56N	390~545	490~760
		L415N or X60N	415~565	520~760

Nominal Diameter Range	Outside diameters Rang(mm)	Coating Type	Coating Layer	Coating thickness
DN100~600	114.3~609.6	Three layers polyethylene		2.0~4.5mm
			Inside layer: epoxy(Green)

			Mid Layer：adhesive（White）

			Outside layer：polyethylene (Black)
		Two layers polyethylene		2.0~4.5mm
			Inside layer: adhesive

			Outside layer：polythene
DN80~600	88.9~609.6	FBE epoxy		200~400um
			Epoxy
		2FBE Two layers epoxy		400~800um
			Inside layer: epoxy(Green)

			Outside layer：intensity epoxy(sage green)
DN100~600	114.3~609.6	3PP Three layers polypropylene		2.5~3mm
			Inside layer: epoxy(Green)

			Mid Layer：adhesive（White）

			Outside layer：polypropylene（White）

Keywords:
Casing, Tubing, Drill pipe, Line pipe, Boiler tubes, Carbon Steel tubes, Precision tubes, etc.

SUNNY STEEL

Main location

Shanghai, China

Send email to us by

sales@sunnysteel.com

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tel：+8621 3378 0199

Line pipe

What is Line Pipe

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