What are the different grades and specifications of API 5L pipes? - Knowledge

API 5L oil pipeline pipe is a pipeline that transports oil, gas and water from the ground to oil and gas industrial enterprises. Pipeline pipes include seamless pipes and welded steel pipes, and their ends include flat ends, threaded ends and socket ends. Some commonly used grades include:

API 5L Grade B: The minimum yield strength of Grade B pipe is 35,000 psi (241 MPa), which is higher than Grade A and has good mechanical properties. It is used in applications that require slightly higher pressure or strength, such as medium and low pressure natural gas transmission pipelines, gathering systems, and process pipelines of oil and gas facilities.
API 5L X42: The minimum yield strength is 42,000 psi (290 MPa). It is widely used in oil and gas cross-country pipelines. Its strength and toughness are suitable for medium pressure and temperature in long-distance transportation. It strikes a balance between strength and cost-effectiveness and is a popular choice for pipeline projects.
API 5L X52: The minimum yield strength is 52,000 psi (359 MPa). It has higher strength and durability than lower grades. It is used in high-pressure pipelines, offshore and high-stress environments. The increased strength can reduce wall thickness, reduce costs and maintain pressure bearing capacity.
API 5L X60: Minimum yield strength 60,000 psi (414 MPa), superior strength than X42, X52, etc., used for high pressure or harsh environment applications such as high pressure natural gas transmission pipelines and offshore platforms.
API 5L X65: Minimum yield strength 65,000 psi (448 MPa), excellent strength and toughness, used for high pressure natural gas transmission, harsh applications such as acid and Arctic, suitable for projects requiring high strength, toughness and resistance to environmental factors.
API 5L X70: Minimum yield strength 70,000 psi (483 MPa), one of the high strength grades, used for key applications such as high pressure long-distance pipelines and offshore platforms, especially useful in complex terrain or high stress, extreme temperature environments.
API 5L X80: Minimum yield strength 80,000 psi (552 MPa), is the highest grade of API 5L, designed for ultra-high pressure applications, such as deepwater offshore or mountainous crossing pipelines, can reduce wall thickness, and achieve lighter and more economical pipeline construction.

Chemical Composition for PSL 2 pipe with t ≤ 0.984"

Steel Grade	Mass fraction, % based on heat and product analyses																		Carbon Equiv a
	C		Si		Mn		P		S		V		Nb		Ti		Other		CE IIW		CE Pcm
	max b		max		max b		max		max		max		max		max		Other		max		max
Seamless and Welded Pipe
BR	0.24		0.4		1.2		0.025		0.015		c		c		0.04		e,l		0.43		0.25
X42R	0.24		0.4		1.2		0.025		0.015		0.06		0.05		0.04		e,l		0.43		0.25
BN	0.24		0.4		1.2		0.025		0.015		c		c		0.04		e,l		0.43		0.25
X42N	0.24		0.4		1.2		0.025		0.015		0.06		0.05		0.04		e,l		0.43		0.25
X46N	0.24		0.4		1.4		0.025		0.015		0.07		0.05		0.04		d,e,l		0.43		0.25
X52N	0.24		0.45		1.4		0.025		0.015		0.1		0.05		0.04		d,e,l		0.43		0.25
X56N	0.24		0.45		1.4		0.025		0.015		0.10f		0.05		0.04		d,e,l		0.43		0.25
X60N	0.24f		0.45f		1.40f		0.025		0.015		0.10f		0.05f		0.04f		g,h,l		As agreed
BQ	0.18		0.45		1.4		0.025		0.015		0.05		0.05		0.04		e,l		0.43		0.25
X42Q	0.18		0.45		1.4		0.025		0.015		0.05		0.05		0.04		e,l		0.43		0.25
X46Q	0.18		0.45		1.4		0.025		0.015		0.05		0.05		0.04		e,l		0.43		0.25
X52Q	0.18		0.45		1.5		0.025		0.015		0.05		0.05		0.04		e,l		0.43		0.25
X56Q	0.18		0.45f		1.5		0.025		0.015		0.07		0.05		0.04		e,l		0.43		0.25
X60Q	0.18f		0.45f		1.70f		0.025		0.015		g		g		g		h,l		0.43		0.25
X65Q	0.18f		0.45f		1.70f		0.025		0.015		g		g		g		h,l		0.43		0.25
X70Q	0.18f		0.45f		1.80f		0.025		0.015		g		g		g		h,l		0.43		0.25
X80Q	0.18f		0.45f		1.90f		0.025		0.015		g		g		g		i,j		As agreed
X90Q	0.16f		0.45f		1.9		0.02		0.01		g		g		g		j,k		As agreed
X100Q	0.16f		0.45f		1.9		0.02		0.01		g		g		g		j,k		As agreed
Welded Pipe
BM		0.22		0.45		1.2		0.025		0.015		0.05		0.05		0.04		e,l		0.43	0.25
X42M		0.22		0.45		1.3		0.025		0.015		0.05		0.05		0.04		e,l		0.43	0.25
X46M		0.22		0.45		1.3		0.025		0.015		0.05		0.05		0.04		e,l		0.43	0.25
X52M		0.22		0.45		1.4		0.025		0.015		d		d		d		e,l		0.43	0.25
X56M		0.22		0.45f		1.4		0.025		0.015		d		d		d		e,l		0.43	0.25
X60M		0.12f		0.45f		1.60f		0.025		0.015		g		g		g		h,l		0.43	0.25
X65M		0.12f		0.45f		1.60f		0.025		0.015		g		g		g		h,l		0.43	0.25
X70M		0.12f		0.45f		1.70f		0.025		0.015		g		g		g		h,l		0.43	0.25
X80M		0.12f		0.45f		1.85f		0.025		0.015		g		g		g		i,j		.043f	0.25
X90M		0.1		0.55f		2.10f		0.02		0.01		g		g		g		i,j		–	0.25
X100M		0.1		0.55f		2.10f		0.02		0.01		g		g		g		i,j		–	0.25

API 5L GR.X42 seamless steel pipe

API 5L Grade X42 Pipes