API 5L ASTM A106 Gr.B Seamless Steel Pipe

Engineered for critical oil well surface pipelines, our dual-standard Gr.B seamless pipes combine API 5L PSL1’s structural integrity with ASTM A106 Gr.B’s 480°C high-temperature resilience.

Product Detail

Our API 5L-certified line pipes are made from high-grade carbon/alloy steel, these pipes excel in extreme conditions with superior pressure resistance, corrosion protection (3PE/FBE coating), and low-temperature toughness. Available in SMLS, LSAW types, sizes range from 1/2″ to 18″ OD, meeting ASTM A53, ASTM A106, and GB/T9711 standards.

Quick Details

Standard:

API 5L A106 A53 GB/T9711

Grade:

Gr.B

Thickness:

2.9-60mm

section shape:

Round

Outer Diameter:

Ф38-457

Place of origin:

Baotou, China(Mainland)

Function:

Efficient Transmission; Safety Protection

Technique:

Hot Rolled; Normalized

Certification:

API 5L GB/T 9711

Surface Treatmen:

According to customers request

Alloy Or Not:

length:

1-12m

Supply Ability:

( 180.0000 )Ton/Tons per year

End:

Bevel; plain

Application:

Oil and gas transportation; Water engineering

Brand:

Baotou steel

Yield Strength:

≥240 MPa (35 ksi)

Hardness Limit:

≤197 HBW

Wall Thickness Comparison

Nominal pipe diameter		OD	WT
DN	Inch	mm	SCH5S	SCH10S	SCH10	SCH20	SCH30	SCH40	SCH60	SCH80	SCH100	SCH120	SCH140	SCH160	Sth	XS	XXS
50	2″	60.3	1.65	2.77	一	一	一	3.91	一	5.54	一	一	一	8.74	3.91	5.54	11.07
65	21/2″	73	2.11	3.05	一	一	一	5.16	一	7.01	一	一	一	9.53	5.16	7.01	14.02
80	3″	88.9	2.11	3.05	一	一	一	5.49	一	7.62	一	一	一	11.13	5.49	7.52	15.24
90	31/2″	101.6	2.11	3.05	一	一	一	5.74	一	8.08	一	一	一	一	5.74	8.08	一
100	4″	114.3	2.11	3.05	一	一	一	6.02	一	8.58	–	11.13	一	13.49	6.02	8.56	17.12
125	5″	141.3	2.77	3.4	一	一	一	6.55	一	9.53	一	12.7	–	15.88	6.55	9.53	18.05
150	6″	168.3	2.77	3.4	一	一	一	7.11	一	10.97	–	14.27	–	18.26	7.11	10.97	21.95
200	8″	219.1	2.77	3.76	一	6.35	7.04	8.18	10.31	12.7	15.09	18.26	20.62	23.01	8.18	12.7	22.23
250	10″	273.1	3.4	4.19	一	6.35	7.8	9.27	12.7	15.09	18.26	21.44	25.4	28.58	9.27	12.7	25.4
300	12″	323.9	3.96	4.57	一	6.35	8.38	10.31	14.27	17.48	21.44	25.4	28.58	33.32	9.53	12.7	25.4
350	14″	355.5	3.96	4.78	6.35	7.92	9.53	11.13	15.09	19.05	23.83	27.79	31.75	35.71	9.53	12.7	一
400	16″	406.4	4.19	4.78	6.35	7.92	9.53	12.7	16.66	21.44	26.19	30.96	36.53	40.49	9.53	12.7	一
450	18″	457.2	4.19	4.78	6.35	7.92	11.13	14.27	19.05	23.83	39.36	34.93	39.67	45.24	一	一	一
500	20″	508	4.78	5.54	6.35	9.53	12.7	15.09	20.62	26.19	32.54	38.1	44.45	50.01	一	一	一
550	22″	558.8	4.78	5.54	6.35	9.53	12.7	一	22.23	28.58	34.93	41.28	47.63	53.98	一	一	一
600	24″	609.6	5.54	6.35	6.35	9.53	14.27	17.48	24.61	30.96	38.89	46.02	52.37	59.54	一	一	一

Chemical Composition PSL-1

Grade	Mass fraction (%) based on heat and product analysis
	C	Mn	P	s	v	Nb	Ti
	max	max	max	max	max	max	max
A	0.22	0.9	0.03	0.03	一	一	一
B	0.28	1.2	0.03	0.03	c,d	c,d	d
X42	0.28	1.3	0.03	0.03	d	d	d
X46	0.28	1.4	0.03	0.03	d	d	d
X52	0.28	1.4	0.03	0.03	d	d	d
X56	0.28	1.4	0.03	0.03	d	d	d
X60	0.28e	1.40e	0.03	0.03	f	f	f
X65	0.28e	1.40e	0.03	0.3	f	f	f
X70	0.28e	1.40e	0.03	0.03	f	f	f
Welded pipe
A	0.22	0.9	0.03	0.03	一	一	一
B	0.26	1.2	0.03	0.03	c,d	c,d	d
X42	0.26	1.3	0.03	0.03	d	d	d
X46	0.26	1.4	0.03	0.03	d	d	d
X52	0.26	1.4	0.03	0.3	d	d	d
X56	0.26	1.4	0.3	0.03	d	d	d
X60	0.26e	1.40e	0.03	0.03	f	f	f
X65	0.26e	1.45e	0.03	0.03	f	f	f
X70	0.26e	165e	0.03	0.03	f	f	f

Chemical Composition PSL-2

Grade		Mass fraction (%) based on heat and product analysis																			CO2 equivalent
		c		Si		Mn		P		S			V		Nb		Ti		other		CE IIW		CE Pcm
		max		max		max		max		max			max		max		max				max		max
Seamless pipe
BR		0.24		0.4		1.2		0.025		0.015			C		C		0.04		e,I		0.043		0.25
X42R		0.24		0.4		1.2		0.025		0.015			0.06		0.05		0.04		e,l		0.043		0.25
BN		0.24		0.4		1.2		0.025		0.015			C		C		0.04		e,l		0.043		0.25
X42N		0.24		0.4		1.2		0.025		0.015			0.06		0.05		0.04		e,I		0.043		0.25
X46N		0.24		0.4		1.4		0.025		0.015			0.07		0.05		0.04		d,e,I		0.043		0.25
X52N		0.24		0.45		1.4		0.025		0.015			0.1		0.05		0.04		d,e,l		0.043		0.25
X56N		0.24		0.45		1.4		0.025		0.015			0.10f		0.05		0.04		d,e,I		0.043		0.25
X60N		0.24f		0.45f		1.40f		0.025		0.015			0.10f		0.05f		0.04f		g.h,I		As agreed
BQ		0.18		0.45		1.4		0.025		0.015			0.05		0.05		0.04		e,		0.043		0.25
X42Q		0.18		0.45		1.4		0.025		0.015			0.05		0.05		0.04		e,l		0.043		0.25
X46Q		0.18		0.45		1.4		0.025		0.015			0.05		0.05		0.04		e,I		0.043		0.25
X52Q		0.18		0.45		1.5		0.025		0.015			0.05		0.05		0.04		e,l		0.043		0.25
X56Q		0.18		0.45f		1.5		0.025		0.015			0.07		0.05		0.04		e,I		0.043		0.25
X60Q		0.18f		0.45f		1.70f		0.025		0.015			g		g		g		h,I		0.043		0.25
X65Q		0.18f		0.45f		1.70f		0.025		0.015			g		g		g		h,I		0.043		0.25
X70Q		0.18f		0.45f		1.80f		0.025		0.015			g		g		g		h,I		0.043		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		0.043		0.25		BM		0.22
X42M	0.22		0.45		1.3		0.025		0.015		0.05	0.05		0.04		e,l		0.043		0.25		X42M		0.22
X46M	0.22		0.45		1.3		0.025		0.015		0.05	0.05		0.04		e,l		0.043		0.25		X46M		0.22
X52M	0.22		0.45		1.4		0.025		0.015		d	d		d		e,l		0.043		0.25		X52M		0.22
X56M	0.22		0.45f		1.4		0.025		0.015		d	d		d		e,l		0.043		0.25		X56M		0.22
X60M	0.12f		0.45f		1.60f		0.025		0.015		g	g		g		h,I		0.043		0.25		X60M		0.12f
X65M	0.12f		0.45f		1.60f		0.025		0.015		g	g		g		h,I		0.043		0.25		X65M		0.12f
X70M	0.12f		0.45f		1.70f		0.025		0.015		g	g		g		h,I		0.043		0.25		X70M		0.12f
X80M	0.12f		0.45f		1.85f		0.025		0.015		g	g		g		i,j		.043f		0.25		X80M		0.12f
X90M	0.1		0.55f		2.10f		0.02		0.01		g	g		g		i,j		一		0.25		X90M		0.1
X100M	0.1		0.55f		2.10f		0.02		0.01		g	g		g		i,j		一		0.25		X100M		0.1

Wall Thickness Tolerance

WT mm (inch)	Tolerancea mm(inch)
Seamless pipe
≤4,0(0.157)	+0,6(0.024) -0,5(0.020)
>4,0(0.157)to<25,0(0.984)	+0,150 -0,125
≥25,0(0.984)	+3,7(0.146) or +0,1t,whichever is greater -3,0(0.120) or -0,1t,whichever is greater
Welded pipe
≤ 5,0 (0.197)	± 0,5 (0.020)
>5,0(0.197)to<15,0(0.591)	±0,1t
≥15,0(0.591)	±1,5(0.060)

Core Processes

Packaging & Delivery

· Pipe End: Covered HDPE crash cap
· Packing: Hexagonal bundles or plain bundles not exceeding 2 tons each
· Special protection : For seamless tubes that require rust prevention, rust preventive oil or other rust preventive agents will be applied to the surface

Packaging & Shipping

· Minimum order quantity: 5 tons
· Price: FOB at Xin’gang port in Tianjin or CIF or CFR
· Payment: 30% deposit in advance, the balance against the copy of B/L; or 100% L/C, etc
· Lead Time: within 10-25 workdays normally
· Sample: Free sample is available.