Pipeline Works

Carbon & Alloy Steel Pipes for Pipeline Purpose

(Pipeline Installation Project Site in Liaohe City, North China)

Process Flowchart (ERW/HFW pipes)

Options & Range

Pipe Type	Grd.Min	Grd.Max	OD Min mm	OD Max mm	WT Min mm	WT Max mm	TON / Year
SMLS	B	X80Q	33.4	457	3.4	60	200000
HFW	B	X80M	219.1	610	4.0	19.1	200000
SAWL	B	X100M	508	1422	6.0	40	500000

Tolerance on Out Diameter

Standard	Size	Diameter Tolerances				Out of Roundness
		Pipe Body		Pipe End		Pipe Body	Pipe End
		SMLS	Welded	SMLS	Welded	SMLS	Welded
API SPEC 5L SO3183 GB/T9711	D<60.3mm	+0.4mm/-0.8mm		+1.6mm/-0.4mm		-	-
	60.3mm≤D≤168.3mm	+0.75%/-0.75%				≤2.0%	≤1.5%
	168.3mm<D≤320mm			+0.5%/-0.5%
	320mm<D≤426mm			+1.6mm/-1.6mm
	426mm<D≤610mm	+0.75%/-0.75%	+3.2mm/-3.2mm
	610mm<D≤800mm	+1.0%/-1.0%	+0.5%/-0.5%	±2.0mm	±1.6mm	≤1.5%	≤1.0%
	800mm<D≤1000mm		+4mm/-4mm
	1000mm<D≤1300mm	+1.0%/-1.0%	+4mm/-4mm			≤15mm	≤1.0%
	1300mm<D≤1422mm	+1.0%/-1.0%	+4mm/-4mm			≤15mm	≤13mm

Tolerance on Wall Thickness

Standard	Specified Outside Diameter	Wall Thickness	Tolerance of Wall Thickness	Tolerance of Wall Thickness
Standard	Specified Outside Diameter	Wall Thickness	SMLS Pipe	Welded Pipe
API SPEC 5L ISO 3183 GB/T 9711	-	t≤4.0mm	+0.6mm/-0.5mm	+0.5mm/-0.5mm
	-	4.0mm<t≤5.0mm	+15%/-12.5%	+0.5mm/-0.5mm
	-	5.0mm<t<15.0mm		+10%/-10%
	-	15.0mm≤t<25.0mm		+1.5mm/-1.5mm
	-	25.0mm≤t<30.0mm	+3.7mm/-3.0mm
	-	30.0mm≤t<37.0mm	+3.7mm/-10.0%
	-	t≥37.0mm	+10.0%/-10.0%

Typical Chemical Components for Line Steels

Standard	Type of Pipe	Class	Grade	C	Si	Mn	P	S	V	Nb	Ti	CE	Pcmb	Remark
Standard	Type of Pipe	Class	Grade	max	max	max	max	max	max	max	max	max	max	Remark
API SPEC5L ISO 3183 GB/T 9711	SMLS PIPE	PSL1	L210 or A	0.22		0.90	0.030	0.030				-	-	e,o
			L245 or B	0.28		1.20	0.030	0.030		-				c,d,e,o
			L290 or X42	0.28	-	1.30	0.030	0.030		-			-	d,e,o
			L320 or X46	0.28		1.40	0.030	0.030	-	-		-	-	de,o
			L360 or X52	0.28		1.40	0.030	0.030		-				d,e,o
			L390 or X56	0.28	-	1.40	0.030	0.030		-	-	-	-	d,e,o
			L415 or X60	0.28		1.40	0.030	0.030			-			d,e,o
			L450 or X65	0.28		1.40	0.030	0.030	-	-	-	-		d,e,0
			L485 or X70	0.28		1.40	0.030	0.030		-		-		d,e,o
		PSL2	L245N or BN	0.24	0.40	1.20	0.025	0.015	-	-	0.04	0.43	0.25	c,f,o
			L290N or X42N	0.24	0.40	1.20	0.025	0.015	0.06	0.05	0.04	0.43	0.25	f,o
			L320N or X46N	0.24	0.40	1.40	0.025	0.015	0.07	0.05	0.04	0.43	0.25	d,f,o
			L360N or X52N	0.24	0.45	1.40	0.025	0.015	0.10	0.05	0.04	0.43	0.25	d,f,o
			L390N or X56N	0.24	0.45	1.40	0.025	0.015	0.10	0.05	0.04	0.43	0.25	d,f,o
			L415N or X60N	0.24	0.45	1.40	0.025	0.015	0.10	0.05	0.04	As agreed		d,g,o
			L245Q or BQ	0.18	0.45	1.40	0.025	0.015	0.05	0.05	0.04	0.43	0.25	f,o
			L290Q or X42Q	0.18	0.45	1.40	0.025	0.015	0.05	0.05	0.04	0.43	0.25	f,o
			L320Q or X46Q	0.18	0.45	1.40	0.025	0.015	0.05	0.05	0.04	0.43	0.25	f,o
			L360Q or X52Q	0.18	0.45	1.50	0.025	0.015	0.05	0.05	0.04	0.43	0.25	f,o
			L390Q or X56Q	0.18	0.45	1.50	0.025	0.015	0.07	0.05	0.04	0.43	0.25	d,f,o
			L415Q or X60Q	0.18	0.45	1.70	0.025	0.015	-		-	0.43	0.25	d,g,o
			L450Q or X65Q	0.18	0.45	1.70	0.025	0.015	-		-	0.43	0.25	d,g,o
			L485Q or X70Q	0.18	0.45	1.80	0.025	0.015	-	-		0.43	0.25	d,g,o
			L555Q or X80Q	0.18	0.45	1.90	0.025	0.015	-	-	-	As agreed		h,i
		For sour service	L245NS or BNS	0.14	0.40	1.35	0.020	0.008	-	-	0.04	0.36	0.22	c,d,j,k
			L290NS or X42NS	0.14	0.40	1.35	0.020	0.008	0.05	0.05	0.04	0.36	0.22	j,k
			L320NS or X46NS	0.14	0.40	1.40	0.020	0.008	0.07	0.05	0.04	0.38	0.23	dj,k
			L360NS or X52NS	0.16	0.45	1.65	0.020	0.008	0.10	0.05	0.04	0.43	0.25	dj,k
			L245QS or BQS	0.14	0.40	1.35	0.020	0.008	0.04	0.04	0.04	0.34	0.22	j,k
			L290QS orX42QS	0.14	0.40	1.35	0.020	0.008	0.04	0.04	0.04	0.34	0.22	j,k
			L320QS or X46QS	0.15	0.45	1.40	0.020	0.008	0.05	0.05	0.04	0.36	0.23	j,k
			L360QS or X52QS	0.16	0.45	1.65	0.020	0.008	0.07	0.05	0.04	0.39	0.23	d,j,k
			L390QS or X56QS	0.16	0.45	1.65	0.020	0.008	0.07	0.05	0.04	0.40	0.24	dj,k
			L415QS or X60QS	0.16	0.45	1.65	0.020	0.008	0.08	0.05	0.04	0.41	0.25	dj,k
			L450QS or X65QS	0.16	0.45	1.65	0.020	0.008	0.09	0.05	0.06	0.42	0.25	d,j,k
			L485QS or X70QS	0.16	0.45	1.65	0.020	0.008	0.09	0.05	0.06	0.42	0.25	d,j,k

Standard	Type of Pipe	Class	Grade	C	Si	Mn	P	S	V	Nb	Ti	CE	Pcmb	Remark
Standard	Type of Pipe	Class	Grade	max	max	max	max	max	max	max	max	max	max	Remark
API SPEC5L SO 3183 GB/T 9711	SMLS PIPE	For offshore service	L245NO or BNO	0.14	0.40	1.35	0.020	0.010		-	0.04	0.36	0.22	c,d,I,m
			L290NO or X42NO	0.14	0.40	1.35	0.020	0.010	0.05	0.05	0.04	0.36	0.22	l,m
			L320NO or X46NO	0.14	0.40	1.40	0.020	0.010	0.07	0.05	0.04	0.38	0.23	d,I,m
			L360NO or X52NO	0.16	0.45	1.65	0.020	0.010	0.10	0.05	0.04	0.43	0.25	d,l
			L245QO or BQO	0.14	0.40	1.35	0.020	0.010	0.04	0.04	0.04	0.34	0.22	l,m
			L290QO or X42Q0	0.14	0.40	1.35	0.020	0.010	0.04	0.04	0.04	0.34	0.22	l,m
			L320QO or X46QO	0.15	0.45	1.40	0.020	0.010	0.05	0.05	0.04	0.36	0.23	l,m
			L360QO or X52QO	0.16	0.45	1.65	0.020	0.010	0.07	0.05	0.04	0.39	0.23	d,J,n
			L390QO or X56QO	0.15	0.45	1.65	0.020	0.010	0.07	0.05	0.04	0.40	0.24	d,I,n
			L415QO or X60QO	0.15	0.45	1.65	0.020	0.010	0.08	0.05	0.04	0.41	0.25	d,J,n
			L455QO or X65QO	0.15	0.45	1.65	0.020	0.010	0.09	0.05	0.06	0.42	0.25	d,J,n
			L485QO or X70QO	0.17	0.45	1.75	0.020	0.010	0.10	0.05	0.06	0.42	0.25	d,J,n
			L555QO or X80QO	0.17	0.45	1.85	0.020	0.010	0.10	0.06	0.06	协议/As agreed		d,I,n
	WELD PIPE	PSL1	L245 or B	0.26		1.20	0.030	0.030	-			-		c,d,e,o
			L290 or X42	0.26		1.30	0.030	0.030			-		-	d,e,o
			L320 or X46	0.26		1.40	0.030	0.030		-		-	-	d,e,o
			L360 or X52	0.26		1.40	0.030	0.030	-		-	-	-	d,e,o
			L390 or X56	0.26		1.40	0.030	0.030	-		-		-	d,e,o
			L415or X60	0.26		1.40	0.030	0.030	-	-	-	-	-	d,e,o
			L450 or X65	0.26		1.45	0.030	0.030	-		-	-	-	d,e,o
			L485 or X70	0.26		1.65	0.030	0.030	-				-	d,e,o
		PSL2	L245M or BM	0.22	0.45	1.20	0.025	0.015	0.05	0.05	0.04	0.43	0.25	f,o
			L290M or X42M	0.22	0.45	1.30	0.025	0.015	0.05	0.05	0.04	0.43	0.25	f,o
			L320M or X46M	0.22	0.45	1.30	0.025	0.015	0.05	0.05	0.04	0.43	0.25	f,o
			L360M or X52M	0.22	0.45	1.40	0.025	0.015			-	0.43	0.25	d,f,o
			L390M or X56M	0.22	0.45	1.40	0.025	0.015			-	0.43	0.25	d,f,o
			L415M or X60M	0.12	0.45	1.60	0.025	0.015	-		-	0.43	0.25	d,g,0
			L450M or X65M	0.12	0.45	1.60	0.025	0.015				0.43	0.25	d,g,o
			L485M or X70M	0.12	0.45	1.70	0.025	0.015		-	-	0.43	0.25	d,g,o
			L555M or X80M	0.12	0.45	1.85	0.025	0.015				0.43	0.25	d,g,o

c Nb+V≤0.06%

d Nb+V+Ti≤0.15%

e Cu≤0.50%,Ni≤0.50%,Cr≤0.50%,Mo≤0.15% f Cu≤0.50%,Ni≤0.30%,Cr≤0.30%,Mo≤0.15% g Cu≤0.50%,Ni≤0.50%,Cr≤0.50%,Mo≤0.50% h Cu≤0.50%,Ni≤1.00%,Cr≤0.50%,Mo≤0.50% i B≤0.004%

jALL≤0.060%,N≤0.012%,AI/N≥2,Cu≤0.35%,Ni≤0.30%,Cr≤0.30%,Mo≤0.15%,B≤0.0005% k for SMLS and welded pipe Ca≤0.006%

IAl≤0.060%,N≤0.012%,AI/N≥2

m Cu≤0.35%,Ni≤0.30%,Cr≤0.30%,Mo≤0.10%,B≤0.0005% n Cu≤0.50%,Ni≤0.50%,Cr≤0.50%,Mo≤0.50%,B≤0.0005%

o B≤0.001%

Mechanic Properties

Standard	Class	Grade		Rt0.5(MPa) Yield Strength	Rm(MPa) Tensile Strength	Af (%) Elongation	Rt0.5/Rm	Rm (MPa) Tensile Strength of Weld Seam
API SPEC5L ISO 3183 GB/T 9711	PSL1	L210 or A	Min	210	335	a	-	335
		L245 or B	Min	245	415	a	-	415
		L290 or X42	Min	290	415	a		415
		L320 or X46	Min	320	435	a		435
		L360 or X52	Min	360	460	a		460
		L390 or X56	Min	390	490	a		490
		L415 or X60	Min	415	520	a		520
		L450 or X65	Min	450	535	a	-	535
		L485 or X70	Min	485	570	a		570
	PSL2	L245N or BN L245Q or BQ L245M or BM	Min	245	415	a		415
		L245N or BN L245Q or BQ L245M or BM	Max	450	655		0.93
		L290N or X42N L290Q or X42Q L290M or X42M	Min	290	415	a	-	415
		L290N or X42N L290Q or X42Q L290M or X42M	Max	495	655		0.93
		L320N or X46N L320Q or X46Q L320M or X46M	Min	320	435	a	-	435
		L320N or X46N L320Q or X46Q L320M or X46M	Max	525	655		0.93
		L360N or X52N L360Q or X52Q L360M or X52M	Min	360	460	a	-	460
		L360N or X52N L360Q or X52Q L360M or X52M	Max	530	760		0.93
		L390N or X56N L390Q or X56Q L390M or X56M	Min	390	490	a	-	490
		L390N or X56N L390Q or X56Q L390M or X56M	Max	545	760		0.93
		L415N or X60N L415Q or X60Q L415M or X60M	Min	415	520	a	-	520
		L415N or X60N L415Q or X60Q L415M or X60M	Max	565	760		0.93
		L450Q or X65Q L450M or X65M	Min	450	535	a	-	535
		L450Q or X65Q L450M or X65M	Max	600	760		0.93
		L485Q or X70Q L485M or X70M	Min	485	570	a	-	570
		L485Q or X70Q L485M or X70M	Max	635	760		0.93
		L555Q or X80Q L555M or X80M	Min	555	625	a	-	625
		L555Q or X80Q L555M or X80M	Max	705	825		0.93
		L625M or X90M	Min	625	695	a	-	695
		L625M or X90M	Max	775	915		0.95
		L690M or X100M	Min	690	760	a	-	760
		L690M or X100M	Max	840	990		0.97
		L830M or X120M	Min	830	915	a	-	915
		L830M or X120M	Max	1050	1145		0.99

Standard	Class	Grade		Rt0.5(MPa) Yield Strength	Rm(MPa) Tensile Strength	Af(%) Elongation	Rt0.5/Rm	Rm(MPa) Tensile Strength of Weld Seam
API SPEC 5L ISO 3183 GB/T 9711	For sour service	L245NS or BNS L245QS or BQS L245MS or BMS	Min	245	415	a	-	415
		L245NS or BNS L245QS or BQS L245MS or BMS	Max	450	655		0.93
		L290NS or X42NS L290QS or X42QS L290MS or X42MS	Min	290	415	a	-	415
		L290NS or X42NS L290QS or X42QS L290MS or X42MS	Max	495	655		0.93
		L320NS or X46NS L320QS or X46QS L320MS or X46MS	Min	320	435	a	-	435
		L320NS or X46NS L320QS or X46QS L320MS or X46MS	Max	525	655		0.93
		L360NS or X52NS L360QS or X52QS L360MS or X52MS	Min	360	460	a	-	460
		L360NS or X52NS L360QS or X52QS L360MS or X52MS	Max	530	760		0.93
		L390QS or X56QS L390MS or X56MS	Min	390	490	a	-	490
		L390QS or X56QS L390MS or X56MS	Max	545	760		0.93
		L415QS or X60QS L415MS or X60MS	Min	415	520	a	-	520
		L415QS or X60QS L415MS or X60MS	Max	565	760		0.93
		L450QS or X65QS L450MS or X65MS	Min	450	535	a	-	535
		L450QS or X65QS L450MS or X65MS	Max	600	760		0.93
		L485QS or X70QS L485MS or X70MS	Min	485	570	a	-	570
		L485QS or X70QS L485MS or X70MS	Max	635	760		0.93
	For offshore service	L245NO or BNO L245QO or BQO L245MO or BMO	Min	245	415	a	-	415
		L245NO or BNO L245QO or BQO L245MO or BMO	Max	450	655		0.93
		L290NO or X42NO L290QO or X42QO L290MO or X42MO	Min	290	415	a	-	415
		L290NO or X42NO L290QO or X42QO L290MO or X42MO	Max	495	655		0.93
		L320NO or X46NO L320QO or X46QO L320MO or X46MO	Min	320	435	a	-	435
		L320NO or X46NO L320QO or X46QO L320MO or X46MO	Max	520	655		0.93
		L360NO or X52NO L360QO or X52QO L360MO or X52MO	Min	360	460	a	-	460
		L360NO or X52NO L360QO or X52QO L360MO or X52MO	Max	525	760		0.93
		L390QO or X56QO L390MO or X56MO	Min	390	490	a	-	490
		L390QO or X56QO L390MO or X56MO	Max	540	760		0.93
		L415QO or X60QO L415MO or X60MO	Min	415	520	a	-	520
		L415QO or X60QO L415MO or X60MO	Max	565	760		0.93
		L450QO or X65QO L450MO or X65MO	Min	450	535	a	-	535
		L450QO or X65QO L450MO or X65MO	Max	570	760		0.93
		L485QO or X70QO L485MO or X70MO	Min	485	570	a	-	570
		L485QO or X70QO L485MO or X70MO	Max	605	760		0.93
		L555QO or X80QO L555MO or X80MO	Min	555	625	a	-	625
		L555QO or X80QO L555MO or X80MO	Max	675	825		0.93

Grade	Transverse Minimum Impact of Pipe Body (J)					Transverse Minimum Impact of Weld (J)
Grade	D≤508	508mm<D ≤762mm	762mm<D ≤914mm	914mm<D ≤1219mm	1219mm<D ≤1422mm	D<1422mm	D=1422mm
≤L415 or X60	27(20)	27(20)	40(30)	40(30)	40(30)	27(20)	40(30)
>L415 or X60 ≤L450 or X65	27(20)	27(20)	40(30)	40(30)	54(40)	27(20)	40(30)
>L450 or X65 ≤L485 or X70	27(20)	27(20)	40(30)	40(30)	54(40)	27(20)	40(30)
>L485 or X70 ≤L555 or X80	40(30)	40(30)	40(30)	40(30)	54(40)	27(20)	40(30)

Note: (1)The values in the table be suitable for the full size standard sample.

(2) The value inside bracket is the minimum single value,outside bracket is the average value.

(3) Test Temperature:0℃ .

For more details on specific carbon and alloy steel tubing and pipes, please refer to the specific product details or contact us at your convenience.

Carbon & Alloy Steel Pipes for Pipeline Purpose

Process Flowchart (ERW/HFW pipes)

Options & Range

Tolerance on Out Diameter

Tolerance on Wall Thickness

Typical Chemical Components for Line Steels

Mechanic Properties

GB/T 3091-2015 Standard - Welded Steel Pipes for Low-pressure Fluid Conveyance

ASTM A106/A106M Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service

EN 10208 – Steel Pipes for Pipelines for Combustible Fluids

API Specification 5L for Line Pipe

ISO 3183 Petroleum and Natural Gas Industries - Steel Pipe for Pipeline Transportation Systems

GOST 20295: Welded Steel Pipes for Oil and Gas Pipelines