API 5L Steel Pipe,API 5L Steel Pipe

Description
Size

Fluid Transportation Steel Pipe
Grade: PSL1 PSL2
Main material: Q195-235 20#16Mn Q345(B,C) L175-L555(X42-X80), J55, K55, N80
API 5L x52: Min Yield Strength - 52 ksi, Min Elongation: 21%0.16% C, 0.45% Si, 1.65% Mn, 0.02% P, 0.01% S, 0.07% V, 0.05% Nb, 0.04% Ti

Main Usage:The API 5L specification provides standards for pipe suitable for use in conveying gas, water, and oil in the natural gas and oil industries. The API SPEC 5L covers seamless and welded steel line pipe. It includes plain-end, threaded-end, and belled-end pipe, as well as through-the-flowline (TFL) pipe, and pipe with ends prepared for use with special couplings.

Standard Specification for Line Pipe:Specifications for API 5L adhere to the International Organization for Standardization ISO 3183, standardizing pipeline transportation systems within the materials, equipment and offshore structures for natural gas, petroleum, and petrochemical industries. When authoring the standards, the technical committee recognized that there are two basic Product Specifications Levels (PSL) of technical requirements and therefore developed PSL 1 and PSL 2. PSL 1 is a standard quality for line pipe where PSL 2 contains additional chemical, mechanical properties, and testing requirements.
Grades covered by this specification are A25, A, B and "X" Grades X42, X46, X52, X56, X60, X65, X70, and X80. The two digit number following the "X" indicates the Minimum Yield Strength (in 000's psi) of pipe produced to this grade.

API 5L Steel Pipe Benefits & Applications:

Fluid transportation steel pipe- preferred in long pipelines due to inexpensiveness
Pipeline steel - resistance to crack propogation
Line Pipe / Sour Service Line Pipes

PSL1 Vs PSL2 Pipes

PARAMETER	PSL1	PSL2
Grade Range	A25 through X70	B through X80
Size range	0.405″ through 80″	4.5″ through 80″
Type of ends	Plain end, Threaded end,	Plain end
Type of ends	Bevelled end special coupling pipes	Plain end
Seam welding	All methods:	All methods:
	continuous welding	except continuous welding
	limited to A25	and laser welding
Electric welds: welder frequency	No minimum	kHz minimum 100
Heat treatment of electric welds	Required for grades >X42	Required for all grades
Heat treatment of electric welds	Required for grades >X42	(B through X80)
Chemistry: Max C for Seamless pipe	0.28% for grades ≥ B	0.24%
Chemistry: Max C for Welded pipe	0.26% for grades ≥ B	0.22%
Chemistry: Max P	0.030% for grades ≥ A	0.03%
Chemistry: Max S	0.03%	0.02%
Carbon equivalent:	Only when purchaser	Maximum required
Carbon equivalent:	specifies SR18	for each grade
Yield strength, maximum	None	Maximum for each grade
UTS (Ultimate Tensile Strength)	None	Maximum for each grade
maximum	None	Maximum for each grade
Fracture toughness	None required	Required for all grades
Non-destructive inspection	Only when purchaser	SR4 mandatory
of Seamless	specifies SR4	SR4 mandatory
Repair by welding of pipe body	Permitted	Prohibited
plate,and skelp	Permitted	Prohibited
Repair by welding of weld seams	Permitted by agreement	Prohibited
without filler metal	Permitted by agreement	Prohibited
Certification	Traceable only until	Certificates (SR15.1)
Certification	all tests are passed	mandatory
Traceability	Traceable only until	Traceable after completion
	all tests are passed	of tests
	unless SR15 is specified	(SR15.2) mandatory