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Seamless Steel Pipe

2026-04-07 22:42:37 | 阅读（743）

We are a professional seamless steel pipe supplier from China, providing high-quality pipes for oil & gas, high-pressure, boiler and industrial applications. Our seamless pipes are manufactured in strict accordance with international standards and widely exported worldwide.

Seamless steel pipes are produced without welding seams, ensuring higher strength and better performance under high pressure and high temperature conditions. They are widely used in petroleum, natural gas, power plants, chemical industry and structural applications.

Standard：

API SPEC 5L (PSL1, PSL2), API SPEC 5CT, ASTM A 106, ASTM A53, GB8307, GB5310, ISO3183

Steel grade:

API SPEC 5L (PSL1, PSL2): B, X42, X46, X52, X56

API SPEC 5CT: J55, K55, N80

ASTM A106: A106A, A106B, A106C

ASTM A53: A53A, A53B

GB307: 10,20

GB5310: 20G, 20MoG, 15MoG, 15CrlMoG, 12Cr2MoG,, 12CrlMoVG

Size of Pipe:

*Remark: Besides below sizes, we also can arrange production based on requirement of customers

Based on API SPEC 5L (PSL1, PSL2)

Table 1

OD		WT			WEIGHT
INCH	MM	SCH	MM	INCH	KG/M	LB/INCH
1/2”	21.3	STD-40	2.77	0.109	1.28	0.86
1/2”	21.3	XS-80	3.73	0.147	1.63	1.1
3/4”	26.7	STD-40	2.87	0.113	1.7	1.14
3/4”	26.7	XS-80	3.91	0.154	2.22	1.49
1”	33.4	STD-40	3.38	0.133	2.53	1.7
1”	33.4	XS-80	4.55	0.179	3.27	2.18
1 1/4”	42.2	5S	1.65	0.065	1.67	1.12
	42.2	10S	2.77	0.109	2.72	1.83
	42.2	STD-40	3.56	0.14	3.43	2.31
	42.2	XS-80	4.85	0.191	4.51	3.03
	42.2	160	6.35	0.25	5.67	3.81
1 1/2”	48.3	10S	2.77	0.109	3.14	2.11
	48.3	STD-40	3.68	0.145	4.09	2.75
	48.3	XS-80	5.08	0.2	5.47	3.68
2”	60.3	10S	2.77	0.109	3.97	2.67
	60.3		3.18	0.125	4.52	3.04
	60.3	STD-40	3.91	0.154	5.49	3.69
	60.3	XS-80	5.54	0.218	7.56	5.08
	60.3	160	8.74	0.344	11.23	7.55
	60.3	XXS	11.07	0.436	13.58	9.13
2 1/2”	73	10S	3.05	0.12	5.32	3.57
	73	30	4.78	0.188	8.12	5.46
	73	STD-40	5.16	0.203	8.72	5.86
	73	XS-80	7.01	0.276	11.52	7.74
	73	160	9.53	0.375	15.08	10.14
	73	XXS	14.02	0.552	20.6	13.84
3”	88.9		3.58	0.141	7.61	5.12
	88.9		3.96	0.156	8.38	5.63
	88.9	STD-40	5.49	0.216	11.41	7.67
	88.9	XS-80	7.62	0.3	15.43	10.37
	88.9	160	11.13	0.438	21.56	14.49
	88.9	XXS	15.24	0.6	27.96	18.79
3 1/2”	101.6	30	4.78	0.188	11.53	7.75
	101.6	STD-40	5.74	0.226	13.71	9.21
	101.6	XS-80	8.08	0.318	18.83	12.65
4”	114.3		3.96	0.156	10.89	7.32
	114.3		4.37	0.172	11.97	8.05
	114.3		4.78	0.188	13.04	8.76
	114.3		5.16	0.203	14.03	9.43
	114.3		5.56	0.219	15.06	10.62
	114.3	STD-40	6.02	0.237	16.24	10.91
	114.3		6.35	0.25	17.08	11.48
	114.3		7.14	0.281	19.06	12.81
	114.3		7.92	0.312	20.99	14.11
	114.3	XS-80	8.56	0.337	22.55	15.15
5”	141.3		3.96	0.156	13.55	9.11
	141.3		4.78	0.188	16.26	10.93
	141.3		5.56	0.219	18.8	12.63
	141.3	STD-40	6.55	0.258	21.99	14.78
	141.3		7.14	0.281	23.86	16.04
	141.3		7.92	0.312	26.32	17.69
	141.3	XS-80	9.53	0.375	31.28	21.02
6”	168.3		4.78	0.188	19.47	13.09
	168.3		5.16	0.203	20.97	14.09
	168.3		5.56	0.219	22.54	15.15
	168.3		6.35	0.25	25.62	17.22
	168.3	STD-40	7.11	0.28	28.55	19.19
	168.3		7.92	0.312	31.64	21.26
	168.3		8.74	0.344	34.74	23.35
	168.3		9.53	0.375	37.69	25.33
	168.3	XS-80	10.97	0.432	42.99	28.89
8”	219.1	20	6.35	0.25	33.65	22.61
	219.1	30	7.04	0.277	37.19	24.99
	219.1		7.92	0.312	41.66	28
	219.1	STD-40	8.18	0.322	42.98	28.88
	219.1		8.74	0.344	45.8	30.78
	219.1		9.53	0.375	49.75	33.43
	219.1	60	10.31	0.406	53.62	36.03
	219.1		11.13	0.438	57.66	38.75
	219.1	XS-80	12.7	0.5	65.3	43.88
10”	273	STD-40	9.27	0.365	60.9	40.92
	273		11.13	0.438	72.61	48.79
	273	XS-60	12.7	0.5	82.35	55.34
	273		14.27	0.562	91.92	61.8
	273	80	15.09	0.594	96.95	65.15
12”	323.8	40	10.31	0.406	80.51	54.1
	323.8		11.13	0.438	86.69	58.25
	323.8	XS	12.7	0.5	98.42	66.14
	323.8	60	14.27	0.562	110.03	73.94
	323.8		15.88	0.625	121.81	81.85
	323.8	80	17.48	0.688	133.38	89.63
14”	355.6	40	11.13	0.438	95.51	64.18
	355.6	XS	12.7	0.5	108.48	72.9
	355.6		14.27	0.562	121.33	81.53
	355.6	60	15.09	0.594	128	86.01
	355.6	80	19.05	0.75	159.71	107.32
16”	406.4	10	6.35	0.25	63.28	42.52
	406.4	XS-40	12.7	0.5	124.55	83.69
	406.4		14.27	0.562	139.39	93.67
	406.4		15.88	0.625	154.48	103.8
	406.4	60	16.66	0.656	161.74	108.69
	406.4		17.48	0.688	169.35	113.8
	406.4		19.05	0.75	183.81	123.52
	406.4		20.62	0.812	198.15	133.15
	406.4	80	21.44	0.844	205.6	138.15

Table 2

OD		WT
NoninalPipe size (Inches)	OD MM	10	20	30	STD	40	60	XS	80
1/8	10.30				1.73	1.73		2.41	2.41
1/4	13.70				2.24	2.24		3.02	3.02
3/8	17.10				2.31	2.31		3.20	3.20
1/2	21.30				2.77	2.77		3.73	3.73
3/4	26.70				2.87	2.87		3.91	3.91
1	33.40				3.38	3.38		4.55	4.55
1 1/4	42.20				3.56	3.56		4.85	4.85
1 1/2	48.30				3.68	3.68		5.08	5.08
2	60.30				3.91	3.91		5.54	5.54
2 1/2	73.00				5.16	5.16		7.01	7.01
3	88.90				5.49	5.49		7.62	7.62
3 1/2	101.60				5.74	5.74		8.08	8.08
4	114.30				6.02	6.02		8.56	8.56
5	141.30				6.55	6.55		9.53	9.53
6	168.30				7.11	7.11		10.97	10.97
8	219.10		6.35	7.04	8.18	8.18	10.31	12.70	12.7
10	273.10		6.35	7.80	9.27	9.27	12.7	12.70	15.09
12	323.90		6.35	8.38	9.53	10.31	14.27	12.70	17.48
14	355.60	6.35	7.92	9.53	9.53	11.13	15.09	12.70	19.05
16	406.40	6.35	7.92	9.53	9.53	12.7	16.66	12.70	21.44
18	457.00	6.35	7.92	11.13	9.53	14.27	19.05	12.70	23.88
20	508.00	6.35	9.53	12.7	9.53	15.09	20.62	12.70	26.19

Based on API SPEC 5CT

Size of Tubing

Size	Outside		Wall		Type of End Finish
Designation	Diameter		Thickness		Grade
1.900"	In	mm	In	mm	J55	K55	N80
1.900"	1.9	48.26	0.145	3.68	P	P	P
2 3/8"	2.375	60.32	0.167	4.24	P	P	P
	2.375	60.32	0.19	4.83	P	P	P
	2.375	60.32	0.254	6.45	P	P	P
	2.375	60.32	0.259	7.49	P	P	P
	2.375	60.32	0.336	8.53	P	P	P
2 7/8"	2.875	73.02	0.217	5.51	P	P	P
	2.875	73.02	0.276	7.01	P	P	P
	2.875	73.02	0.308	7.82	P	P	P
	2.875	73.02	0.34	8.64	P	P	P
	2.875	73.02	0.392	9.96	P	P	P
	2.875	73.02	0.44	11.18	P	P	P
3 1/2"	3.5	73.02	0.216	5.49	P	P	P
	3.5	88.9	0.254	6.45	P	P	P
	3.5	88.9	0.289	7.34	P	P	P
	3.5	88.9	0.375	9.52	P	P	P
	3.5	88.9	0.43	10.92	P	P	P
	3.5	88.9	0.476	12	P	P	P
	3.5	88.9	0.53	13.46	P	P	P
4"	4	101.6	0.226	5.74	P	P	P
4"	4	101.6	0.262	6.65	P	P	P
4 1/2"	4.5	114.3	0.271	6.88	P	P	P
	4.5	114.3	0.337	8.56	P	P	P
	4.5	114.3	0.38	9.65	P	P	P
	4.5	114.3	0.43	10.92	P	P	P
	4.5	114.3	0.5	12.7	P	P	P
	4.5	114.3	0.56	14.22	P	P	P
	4.5	114.3	0.63	16	P	P	P

Size of Casing

Size	Weight	Outside		Wall		Type of End Finish
Designation	Designation	Diameter		Thickness		Grade
		In	Mm	In	mm	J55	K55	N80
4 1/2"	9.5	4.5	114.3	0.205	5.21	P	P	P
	10.5	4.5	114.3	0.224	5.69	P	P	P
	11.6	4.5	114.3	0.25	6.35	P	P	P
	13.5	4.5	114.3	0.29	7.37	P	P	P
	15.1	4.5	114.3	0.337	8.56	P	P	P
5	11.5	5	127	0.22	5.59	P	P	P
	13	5	127	0.253	6.43	P	P	P
	15	5	127	0.296	7.52	P	P	P
	18	5	127	0.362	9.19	P	P	P
	21.4	5	127	0.437	11.1	P	P	P
	23.2	5	127	0.478	12.14	P	P	P
	24.1	5	127	0.5	12.7	P	P	P
5 /2"	14	5.5	139.7	0.244	6.2	P	P	P
	15.5	5.5	139.7	0.275	6.99	P	P	P
	17	5.5	139.7	0.304	7.72	P	P	P
	20	5.5	139.7	0.361	9.17	P	P	P
	23	5.5	139.7	0.415	10.54	P	P	P
	26.8	5.5	139.7	0.5	12.7	P	P	P
	29.7	5.5	139.7	0.562	14.27	P	P	P
	32.6	5.5	139.7	0.625	15.88	P	P	P
	35.3	5.5	139.7	0.687	17.45	P	P	P
	38	5.5	139.7	0.75	19.05	P	P	P
	40.5	5.5	139.7	0.812	20.62	P	P	P
	43.1	5.5	139.7	0.875	22.22	P	P	P
6 5/8"	20	6.625	168.28	0.288	7.32	P	P	P
	24	6.625	168.28	0.352	8.94	P	P	P
	26	6.625	168.28	0.417	10.59	P	P	P
	32	6.625	168.28	0.475	12.06	P	P	P
7"	20	7	177.8	0.272	6.91	P	P	P
	23	7	177.8	0.317	8.05	P	P	P
	26	7	177.8	0.362	9.19	P	P	P
	29	7	177.8	0.408	10.36	P	P	P
	32	7	177.8	0.453	11.51	P	P	P
	35	7	177.8	0.498	12.65	P	P	P
	38	7	177.8	0.54	13.72	P	P	P
7 5/8"	26.4	7.625	193.68	0.328	8.33	P	P	P
	29.7	7.625	193.68	0.375	9.52	P	P	P
	33.7	7.625	193.68	0.43	10.92	P	P	P
	39	7.625	193.68	0.5	12.7	P	P	P
	42.8	7.625	193.68	0.562	14.27	P	P	P
	45.3	7.625	193.68	0.595	15.11	P	P	P
	47.1	7.625	193.68	0.625	15.68	P	P	P
8 5/8"	24	8.625	219.08	0.264	6.71	P	P	P
	28	8.625	219.08	0.304	7.72	P	P	P
	32	8.625	219.08	0.352	8.94	P	P	P
	36	8.625	219.08	0.4	10.16	P	P	P
	40	8.625	219.08	0.45	11.43	P	P	P
	44	8.625	219.08	0.5	12.7	P	P	P
	49	8.625	219.08	0.557	14.15	P	P	P
9 5/8"	32.3	9.625	244.48	0.312	7.92	P	P	P
	36	9.625	244.48	0.352	8.94	P	P	P
	40	9.625	244.48	0.395	10.03	P	P	P
	43.5	9.625	244.48	0.435	11.05	P	P	P
	47	9.625	244.48	0.472	11.99	P	P	P
	53.5	9.625	244.48	0.545	13.84	P	P	P
	58.4	9.625	244.48	0.595	15.11	P	P	P
	59.4	9.625	244.48	0.609	15.47	P	P	P
	64.9	9.625	244.48	0.672	17.07	P	P	P
	70.3	9.625	244.48	0.734	18.64	P	P	P
	75.6	9.625	244.48	0.797	20.24	P	P	P
10 3/4"	32.75	10.75	273.05	0.279	7.09	P	P	P
	40.5	10.75	273.05	0.35	8.89	P	P	P
	45.5	10.75	273.05	0.4	10.16	P	P	P
	51	10.75	273.05	0.45	11.43	P	P	P
	55.5	10.75	273.05	0.495	12.57	P	P	P
	60.7	10.75	273.05	0.545	13.84	P	P	P
	65.7	10.75	273.05	0.959	15.11	P	P	P
	73.2	10.75	273.05	0.672	17.07	P	P	P
	79.2	10.75	273.05	0.734	18.64	P	P	P
	85.3	10.75	273.05	0.797	20.24	P	P	P

Standard: API SPEC 5L

Mechanical Properties

Standard	Grade	（MPa）		（MPa）		（%）	（J）
Standard	Grade	Yield strength		Tensile Strength		Elongation	Impact Energy
API SPEC 5L	PSL1					See table 3 of API SPEC 5L
	B	≥241		≥414
	×42	≥290		≥414
	×46	≥317		≥434
	×52	≥359		≥455
	×56	≥386		≥490
	PSL2
		Min	Max	Min	Max		Min
	B	241	448	441	758		41(27)
	×42	290	496	414	758		41(27)
	×46	317	524	434	758		41(27)
	×52	359	531	455	758		41(27)
	×56	386	544	490	758		41(27)

Note Transverse impact energy requirements are shown in brackets.

Chemical Composition(%)

Standard	Grade	C	Mn	P		S
Standard	Grade	Max	Max	Min	Max	Max
API SPEC 5L	PSL1
	B	0.28	1.2		0.03	0.03
	×42	0.28	1.3		0.03	0.03
	×46,×52,×56	0.28	1.4		0.03	0.03
	PSL2
	B	0.24	1.2		0.025	0.015
	×42	0.24	1.3		0.025	0.015
	×46,×52,×56	0.24	1.4		0.025	0.015

Note: CE(llW)0.43%Max.for PSL2

Standard: API SPEC 5CT

Mechanical Properties:

Grade	Yield Strength				Tensile Strength		Hardness		AllcwableHardness Variation
	min		max		min		max		AllcwableHardness Variation
	Psi	Mpa	Psi	Mpa	Psi	Mpa	HRC	BHN	HRC
J55	55,000	379	80,000	552	75,000	517	-	-	-
K55	55,000	379	80,000	552	95,000	655	-	-	-
N80	80,000	552	80,000	758	100,000	689	-	-	-

Chemical Composition:

钢级 Grade	Chemical Composition%
	C		Mn		Mo		Cr		Nl	Cu	P	S	Si
	min	max	min	max	min	max	min	max	max	max	max	max	Max
J55	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
K55	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-
N80	-	-	-	-	-	-	-	-	-	-	0.030	0.030	-

ASTM A106

Standard

Grade

Chemical Composition(%)

Mechanical Properties

P.S

(MPa)

Tensile Strength

(MPa)

Yield Strength

ASTM

A106

≤0.25

≥0.10

0.27~0.93

≤0.035

≤0.40

≤0.15

≤0.40

≤0.08

≥330

≥205

≤0.30

≥0.10

0.29~1.06

≤0.035

≤0.40

≤0.15

≤0.40

≤0.08

≥415

≥240

≤.035

≥0.10

0.29~1.06

≤0.035

≤0.40

≤0.15

≤0.40

≤0.08

≥485

≥275

ASTM A53

Standard

Grade

Chemical Composition(%)

Mechanical Properties

(MPa)

Tensile Strength

(MPa)

Yield Strength

ASTM

A53

≤0.25

≤0.95

≤0.05

≤0.045

≤0.40

≤0.15

≤0.40

≤0.08

≥330

≥205

≤0.30

≤1.20

≤0.05

≤0.045

≤0.40

≤0.15

≤0.40

≤0.08

≥415

≥240

Standard: GB3087

Standard

Grade

Chemical Composition(%)

Mechanical Properties

P, S

Mo, V

(MPa)

Tensile Strength

(MPa)

Yield Strength

（%）Elongation

GB3087

0.07~0.14

0.17~0.37

0.35~0.65

≤0.035

≤0.25

335~475

≥195

≥24

0.07~0.24

0.17~0.37

0.35~0.65

≤0.035

≤0.25

410~550

≥245

≥20

Standard: GB5310

Standard

Grade

Chemical Composition(%)

Mechanical Properties

(MPa)

Tensile Strength

(MPa)

Yield Strength

(%)

Elongation

GB5310

20G

0.17~0.24

0.17~0.37

0.35~0.65

≤0.030

≤0.03

410~550

≥245

≥24

20MoG

0.17~0.24

0.17~0.37

0.70~1.00

≤0.030

≤0.03

≥415

≥240

≥22

15MoG

0.12~0.20

0.17~0.37

0.40~0.80

≤0.030

≤0.03

0.25~0.35

450~600

≥270

≥22

15Cr1MoG

0.12~0.18

0.17~0.37

0.40~0.70

≤0.030

≤0.03

0.80~1.1

0.40~0.55

440~640

≥235

≥21

12Cr2MoG

0.08~0.15

≤0.50

0.40~0.70

≤0.030

≤0.03

2.00~2.5

0.90~1.20

450~600

≥280

≥20

12Cr1MoVG

0.08~0.15

0.17~0.37

0.40~0.70

≤0.030

≤0.03

0.90~1.2

0.25~0.35

0.15~0.3

470~640

≥255

≥21

ISO 3183

Standard	Grade	Chemical Composition (%)								Mechanical Properties
		C	Si	Mn	P	S	V	Nb	Ti	T.S(MPa)	Y.S.(MPa)	A(%)
		max	max	Max	Max	Max	Max	Max	Max	min	Min	min
ISO3183	L245 or×B	0.28	-	1.2	0.03	0.03	0.06	0.15	0.15	415	245	21
	L290 or×42	0.28	-	1.3	0.03	0.03	0.15	0.15	0.15	415	290	21
	L320 or×46	0.28	-	1.4	0.03	0.03	0.15	0.15	0.15	435	320	20
	L360 or×52	0.28	-	1.4	0.03	0.03	0.15	0.15	0.15	460	360	19
	L390 or×56	0.28	-	1.4	0.03	0.03	0.15	0.15	0.15	490	390	18

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