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ERW steel pipe

What's ERW steel pipe?

ERW means High frequency electric resistance welded。 ERW steel pipe "is a straight seam resistance welding pipe, abbreviated as ERW in English. It is used to transport vapor-liquid objects such as oil, natural gas, and water, and can meet various requirements of high and low pressure. Circular ERW steel pipes occupy a light and heavy position in the field of transportation pipes in the world, while square and rectangular ERW steel pipes play a crucial role in the field of structural pipes in the world. The ERW steel pipes produced by Yuantai can be used as structural steel pipes and also as conveying pipes.

ERW steel pipe, LSAW steel pipe, SSAW steel pipe, collectively known as the three major welded pipes

How is an ERW steel pipe produced?

Straight seam high-frequency welded pipe (ERW) is a hot rolled coil formed by a forming machine, which utilizes the skin effect and proximity effect of high-frequency current to heat and melt the edges of the pipe blank. Under the action of extrusion rollers, pressure welding is carried out to achieve production. The specific steps for producing an ERW steel pipe are:

1. Uncoiling

2. Leveling

3. Shear butt welding

4. Looper storage

5. Plate probe

6. Trimming

7. Forming

8. High frequency welding

9. Remove internal and external burrs

10. Online ultrasonic testing

11. Qualified ERW steel pipe spray marking

12. Packaging

13. Warehousing

How many surface treatment methods are there for ERW steel pipes?

In general, ERW steel pipe buyers require us to undergo surface treatment before shipment.

The surface treatment methods we can adopt for ERW steel pipes include the following:

1. Surface not treated

2. Applying oil

3. Painting

4. Hot dip galvanizing

5. Corrosion prevention

6. Insulation

The surface treatment method used for each ERW steel pipe is determined by the usage scenario of the ERW steel pipe. If you are unsure which surface treatment method should be used for your ERW steel pipe, please contact our customer manager promptly: sales@ytdrgg.com

ERW steel pipe specification

Here, we have only listed some standard and conventional ERW steel pipe models. If the size you need is not included in this specification table, Yuantai can also customize mass production. You can send your desired size, wall thickness, length, etc. to our customer manager, and we will provide you with a quotation within 2 hours.

外径(O.D.)		壁厚(Wall Thickness)			重量(Weight)
英寸(inch)	毫米.(mm)	单位(SCH)	毫米(mm).	英寸.(inch)	公斤/米.(KG/M)	磅/英尺.( lb/ft)
1/8”	10.3	10S	1.24	0.049	0.28	0.19
1/8”	10.3	STD-40	1.73	0.068	0.37	0.25
1/8”	10.3	XS-80	2.41	0.095	0.48	0.32
1/4”	13.7	10S	1.65	0.065	0.50	0.34
1/4”	13.7	STD-40	2.24	0.088	0.64	0.43
1/4”	13.7	XS-80	3.02	0.119	0.81	0.55
3/8”	17.1	10S	1.65	0.065	0.64	0.43
3/8”	17.1	STD-40	2.31	0.091	0.85	0.57
3/8”	17.1	XS-80	3.20	0.126	1.11	0.75
1/2”	21.3	5S	1.05	0.042	0.53	0.36
1/2”	21.3	10S	2.11	0.083	1.01	0.68
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	1.10
1/2”	21.3	160	4.78	0.188	1.97	1.33
1/2”	21.3	XXS	7.47	0.294	2.57	1.73
3/4”	26.7	5S	1.65	0.065	1.03	0.69
3/4”	26.7	10S	2.11	0.083	1.29	0.87
3/4”	26.7	STD-40	2.87	0.113	1.70	1.14
3/4”	26.7	XS-80	3.91	0.154	2.22	1.49
3/4”	26.7	160	5.56	0.219	2.93	1.97
3/4”	26.7	XXS	7.82	0.308	3.68	2.48
1”	33.4	5S	1.65	0.065	1.31	0.88
1”	33.4	10S	2.77	0.109	2.12	1.42
1”	33.4	STD-40	3.38	0.133	2.53	1.70
1”	33.4	XS-80	4.55	0.179	3.27	2.18
1”	33.4	160	6.35	0.250	4.28	2.88
1”	33.4	XXS	9.09	0.358	5.51	3.71
1 1/4”	42.2	5S	1.65	0.065	1.67	1.12
1 1/4”	42.2	10S	2.77	0.109	2.72	1.83
1 1/4”	42.2	STD-40	3.56	0.140	3.43	2.31
1 1/4”	42.2	XS-80	4.85	0.191	4.51	3.03
1 1/4”	42.2	160	6.35	0.250	5.67	3.81
1 1/4”	42.2	XXS	9.70	0.382	7.85	5.28
1 1/2”	48.3	5S	1.65	0.065	1.92	1.29
1 1/2”	48.3	10S	2.77	0.109	3.14	2.11
1 1/2”	48.3	STD-40	3.68	0.145	4.09	2.75
1 1/2”	48.3	XS-80	5.08	0.200	5.47	3.68
1 1/2”	48.3	160	7.14	0.281	7.32	4.92
1 1/2”	48.3	XXS	10.15	0.400	9.65	6.49
2”	60.3	5S	1.65	0.065	2.41	1.62
2”	60.3		2.11	0.083	3.06	2.06
2”	60.3	10S	2.77	0.109	3.97	2.67
2”	60.3		3.18	0.125	4.52	3.04
2”	60.3	STD-40	3.91	0.154	5.49	3.69
2”	60.3	XS-80	5.54	0.218	7.56	5.08
2”	60.3	160	8.74	0.344	11.23	7.55
2”	60.3	XXS	11.07	0.436	13.58	9.13
2 1/2”	73.0	5S	2.11	0.083	3.73	2.51
2 1/2”	73.0	10S	3.05	0.120	5.32	3.57
2 1/2”	73.0	30	4.78	0.188	8.12	5.46
2 1/2”	73.0	STD-40	5.16	0.203	8.72	5.86
2 1/2”	73.0	XS-80	7.01	0.276	11.52	7.74
2 1/2”	73.0	160	9.53	0.375	15.08	10.14
2 1/2”	73.0	XXS	14.02	0.552	20.60	13.84
3”	88.9	5S	2.11	0.083	4.56	3.07
3”	88.9		2.77	0.109	5.95	4.00
3”	88.9	10S	3.05	0.120	6.52	4.38
3”	88.9		3.18	0.125	6.79	4.56
3”	88.9		3.58	0.141	7.61	5.12
3”	88.9		3.96	0.156	8.38	5.63
3”	88.9	STD-40	5.49	0.216	11.41	7.67
3”	88.9	XS-80	7.62	0.300	15.43	10.37
3”	88.9	160	11.13	0.438	21.56	14.49
3”	88.9	XXS	15.24	0.600	27.96	18.79
3 1/2”	101.6	5S	2.11	0.083	5.23	3.52
3 1/2”	101.6	10S	3.05	0.120	7.49	5.03
3 1/2”	101.6	30	4.78	0.188	11.53	7.75
3 1/2”	101.6	STD-40	5.74	0.226	13.71	9.21
3 1/2”	101.6	XS-80	8.08	0.318	18.83	12.65
4”	114.3	5S	2.11	0.083	5.90	3.97
4”	114.3	10S	3.05	0.120	8.46	5.68
4”	114.3		3.18	0.125	8.81	5.92
4”	114.3		3.96	0.156	10.89	7.32
4”	114.3		4.37	0.172	11.97	8.05
4”	114.3		4.78	0.188	13.04	8.76
4”	114.3		5.16	0.203	14.03	9.43
4”	114.3		5.56	0.219	15.06	10.62
4”	114.3	STD-40	6.02	0.237	16.24	10.91
4”	114.3		6.35	0.250	17.08	11.48
4”	114.3		7.14	0.281	19.06	12.81
4”	114.3		7.92	0.312	20.99	14.11
4”	114.3	XS-80	8.56	0.337	22.55	15.15
4”	114.3	120	11.13	0.438	28.61	19.23
4”	114.3	160	13.49	0.531	33.88	22.77
4”	114.3	XXS	17.12	0.674	41.45	27.85
5”	141.3		3.96	0.156	13.55	9.11
5”	141.3		4.78	0.188	16.26	10.93
5”	141.3		5.56	0.219	18.80	12.63
5”	141.3	STD-40	6.55	0.258	21.99	14.78
5”	141.3		7.14	0.281	23.86	16.04
5”	141.3		7.92	0.312	26.32	17.69
5”	141.3	XS-80	9.53	0.375	31.28	21.02
5”	141.3	120	12.70	0.500	40.69	27.34
5”	141.3	160	15.88	0.625	49.62	33.34
5”	141.3	XXS	19.05	0.750	58.01	38.98
6”	168.3		4.37	0.172	17.84	11.99
6”	168.3		4.78	0.188	19.47	13.09
6”	168.3		5.16	0.203	20.97	14.09
6”	168.3		5.56	0.219	22.54	15.15
6”	168.3		6.35	0.250	25.62	17.22
6”	168.3	STD-40	7.11	0.280	28.55	19.19
6”	168.3		7.92	0.312	31.64	21.26
6”	168.3		8.74	0.344	34.74	23.35
6”	168.3		9.53	0.375	37.69	25.33
6”	168.3	XS-80	10.97	0.432	42.99	28.89
6”	168.3		12.70	0.500	49.23	33.08
6”	168.3	120	14.27	0.562	54.75	36.79
6”	168.3		15.88	0.625	60.30	40.52
6”	168.3	160	18.26	0.719	68.25	45.86
6”	168.3		19.05	0.750	70.85	47.61
6”	168.3	XXS	21.95	0.864	80.02	53.77
6”	168.3		22.23	0.875	80.87	54.34
8”	219.1		4.78	0.188	25.52	17.15
8”	219.1		5.16	0.203	27.50	18.48
8”	219.1		5.56	0.219	29.58	19.88
8”	219.1	20	6.35	0.250	33.65	22.61
8”	219.1	30	7.04	0.277	37.19	24.99
8”	219.1		7.92	0.312	41.66	28.00
8”	219.1	STD-40	8.18	0.322	42.98	28.88
8”	219.1		8.74	0.344	45.80	30.78
8”	219.1		9.53	0.375	49.75	33.43
8”	219.1	60	10.31	0.406	53.62	36.03
8”	219.1		11.13	0.438	57.66	38.75
8”	219.1	XS-80	12.70	0.500	65.30	43.88
8”	219.1		14.27	0.562	72.81	48.93
8”	219.1	100	15.09	0.594	76.69	51.53
8”	219.1		15.88	0.625	80.31	54.02
8”	219.1	120	18.26	0.719	91.36	61.39
8”	219.1		19.05	0.750	94.93	63.79
8”	219.1	140	20.62	0.812	101.95	68.51
8”	219.1	XXS	22.23	0.875	108.96	73.22
8”	219.1	160	23.01	0.906	112.40	75.59
8”	219.1		25.40	1.000	122.56	82.36
10”	273.0		4.78	0.188	31.94	21.46
10”	273.0		5.16	0.203	34.43	23.14
10”	273.0		5.56	0.219	37.04	24.89
10”	273.0	20	6.35	0.250	42.18	28.34
10”	273.0		7.09	0.279	46.97	31.56
10”	273.0	30	7.80	0.307	51.53	34.63
10”	273.0		8.74	0.344	57.34	38.66
10”	273.0	STD-40	9.27	0.365	60.90	40.92
10”	273.0		11.13	0.438	72.61	48.79
10”	273.0	XS-60	12.70	0.500	82.35	55.34
10”	273.0		14.27	0.562	91.92	61.80
10”	273.0	80	15.09	0.594	96.95	65.15
10”	273.0		15.88	0.625	101.71	68.35
10”	273.0	100	18.26	0.719	115.87	77.86
10”	273.0		20.62	0.812	129.64	87.11
10”	273.0	120	21.44	0.844	134.35	90.28
10”	273.0		22.23	0.875	138.87	93.32
10”	273.0		23.83	0.938	147.91	99.39
10”	273.0	XXS-140	25.40	1.000	156.66	105.22
10”	273.0	160	28.58	1.125	174.01	116.93
10”	273.0		31.75	1.250	190.81	128.22
12”	323.8	20	6.35	0.250	50.22	33.75
12”	323.8		7.14	0.281	56.32	37.85
12”	323.8		7.92	0.312	62.32	41.88
12”	323.8	30	8.38	0.330	65.85	44.23
12”	323.8		8.74	0.344	68.60	46.10
12”	323.8	STD	9.53	0.375	74.61	50.13
12”	323.8	40	10.31	0.406	80.51	54.10
12”	323.8		11.13	0.438	86.69	58.25
12”	323.8	XS	12.70	0.500	98.42	66.14
12”	323.8	60	14.27	0.562	110.03	73.94
12”	323.8		15.88	0.625	121.81	81.85
12”	323.8	80	17.48	0.688	133.38	89.63
12”	323.8		19.05	0.750	14.62	97.18
12”	323.8		20.62	0.812	155.73	104.65
12”	323.8	100	21.44	0.844	161.48	108.51
12”	323.8		23.83	0.938	178.07	119.65
12”	323.8	XXS-120	25.40	1.000	188.80	126.87
12”	323.8		26.97	1.062	199.42	134.00
12”	323.8	140	28.58	1.125	210.18	141.23
12”	323.8		31.75	1.250	230.98	155.21
12”	323.8	160	33.32	1.312	241.10	162.01
14”	355.6	10	6.35	0.250	55.25	37.13
14”	355.6	20	7.92	0.312	68.60	46.1
14”	355.6		8.74	0.344	75.52	50.75
14”	355.6	STD-30	9.53	0.375	82.16	55.21
14”	355.6		10.31	0.406	88.68	59.59
14”	355.6	40	11.13	0.438	95.51	64.18
14”	355.6	XS	12.70	0.500	108.48	72.90
14”	355.6		14.27	0.562	121.33	81.53
14”	355.6	60	15.09	0.594	128.00	86.01
14”	355.6	80	19.05	0.750	159.71	107.32
14”	355.6	100	23.83	0.938	196.94	132.34
14”	355.6		25.40	1.000	208.92	140.39
14”	355.6		26.97	1.062	220.78	148.36
14”	355.6	120	27.79	1.094	226.93	152.49
14”	355.6	140	31.75	1.250	256.13	172.11
14”	355.6	160	35.71	1.406	284.56	191.21
16”	406.4	10	6.35	0.250	63.28	42.52
16”	406.4		7.14	0.281	71.01	47.72
16”	406.4	20	7.92	0.312	78.62	52.83
16”	406.4		8.74	0.344	86.58	58.18
16”	406.4	STD-30	9.53	0.357	94.21	63.31
16”	406.4		10.31	0.406	101.72	68.36
16”	406.4		11.13	0.438	109.59	73.64
16”	406.4	XS-40	12.70	0.500	124.55	83.69
16”	406.4		14.27	0.562	139.39	93.67
16”	406.4		15.88	0.625	154.48	103.80
16”	406.4	60	16.66	0.656	161.74	108.69
16”	406.4		17.48	0.688	169.35	113.80
16”	406.4		19.05	0.750	183.81	123.52
16”	406.4		20.62	0.812	198.15	133.15
16”	406.4	80	21.44	0.844	205.60	138.15
16”	406.4		25.40	1.000	241.06	161.98
16”	406.4	100	26.19	1.031	248.05	166.68
16”	406.4	120	30.96	1.219	289.54	194.56
16”	406.4		31.75	1.250	296.31	199.11
16”	406.4	140	36.53	1.438	336.57	226.16
16”	406.4	160	40.49	1.594	369.06	247.99
18”	457.2	20	7.92	0.312	88.60	59.54
18”	457.2		8.74	0.344	97.59	65.58
18”	457.2	STD	9.53	0.375	106.23	71.38
18”	457.2		10.31	0.406	114.72	77.09
18”	457.2	30	11.13	0.438	123.62	83.07
18”	457.2	XS	12.70	0.500	140.56	94.45
18”	457.2	40	14.27	0.562	157.38	105.75
18”	457.2		15.88	0.625	174.50	117.25
18”	457.2		17.48	0.688	191.38	128.60
18”	457.2	60	19.05	0.750	207.82	139.65
18”	457.2	80	23.83	0.938	257.13	172.78
18”	457.2		25.40	1.000	273.08	183.50
18”	457.2		26.97	1.062	288.91	194.14
18”	457.2		28.58	1.125	305.01	204.96
18”	457.2	100	29.36	1.156	312.76	210.16
18”	457.2		30.18	1.188	320.88	215.62
18”	457.2		31.75	1.250	336.33	226.00
18”	457.2	120	34.93	1.375	367.25	246.78
18”	457.2	140	39.67	1.562	412.40	277.12
18”	457.2	160	45.24	1.781	464.03	311.81
20”	508		8.74	0.344	108.70	73.04
20”	508	STD-20	9.53	0.375	118.33	79.51
20”	508		10.31	0.406	127.82	85.89
20”	508		11.13	0.438	137.76	92.57
20”	508	XS-30	12.70	0.500	156.70	105.3
20”	508		14.27	0.562	175.51	117.94
20”	508	40	15.09	0.594	185.28	124.50
20”	508		15.88	0.625	194.67	130.81
20”	508		17.48	0.688	213.59	143.53
20”	508		19.05	0.750	232.03	155.92
20”	508	60	20.62	0.812	250.34	168.22
20”	508		25.40	1.000	305.35	205.18
20”	508	80	26.19	1.031	314.33	211.22
20”	508		30.18	1.188	359.22	241.38
20”	508		31.75	1.250	376.66	253.10
20”	508	100	32.54	1.281	385.40	258.97
20”	508	120	38.10	1.500	445.97	299.67
20”	508	140	44.45	1.750	513.27	344.90
20”	508	160	50.01	1.969	570.54	383.38
22”	559		8.74	0.344	119.80	80.5
22”	559	STD-20	9.53	0.375

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ERW steel pipe

ERW steel pipe