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Carbon steel pipes are pipes made of carbon steel. They are one of the most commonly used metal materials and have good mechanical properties, processing properties and corrosion resistance. According to the production method, it can be divided into two types: seamless steel pipe and welded steel pipe.
Product Parameters

Product name	Carbon steel welded pipe
Section shape	Round
Weld Type	ERW
Diameter	20mm-500mm or as your required
Thickness	0.3-100mm or as your required
Length	5800mm-12000mm or as your required
Standard	AISI,ASTM,DIN,JIS,GB ,JIS,SUS,EN,etc
Technique	Hot rolled/Cold rolled
Surface Treatment	1. Galvanized 2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement
Thickness Tolerance	±1%
Material	GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E
	EN:S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q
	ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80
	JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE
Sample	Sample Freely
Application	1. Fence, greenhouse, door pipe,greenhouse 2. Low pressure liquid, water, gas, oil, line pipe 3. For both indoor and outdoor the building construction 4. Widely used in scaffolding construction which is much cheaper and convenient
Transport Package	Bundles or in Bulk

Product Specifications

Specifications（mm）Diameter * wall thickness
14x3	60x6	168x9.5	325x20
14x3.5	60x7	168x10	325x22
14x4	60x8	168x11	325x23
16x3	60x9	168x12	325x25
18x2	60x10	168x14	325x28
18x3	76x4.5	168x15	325x30
18x4	76x5	168x16	325x32
18x5	76x6	168x18	325x36
19x2	76x7	168x20	325x40
21x4	76x8	168x22	325x45
22x2.5	76x9	168x25	356x9.5
22x3	76x10	168x28	356x12
22x4	89x4	180x10	356x15
22x5	89x4.5	194x10	356x19
25x2.5	89x5	194x12	356x28
25x3	89x5.5	194x14	356x36
25x4	89x6	194x16	377x9
25x5	89x7	194x18	377x10
25x5.5	89x7.5	194x20	377x12
27x3.5	89x8	194x26	377x14
27x4	89x9	219x6.5	377x15
27x5	89x10	219x7	377x16
27x5.5	89x11	219x8	377x18
28x5.5	89x12	219x9	377x20
28x3	108x4.5	219x10	377x22
28x3.5	108x5	219x12	377x25
28x4	108x6	219x13	377x32
30x2.5	108x7	219x14	377x36
32x2.5	108x8	219x16	377x40
32x3	108x9	219x18	377x45
32x3.5	108x10	219x20	377x50
32x4	108x12	219x22	406x9.5
32x4.5	108x14	219x24	406x11
32x5	108x15	219x25	406x13
34x3	108x16	219x26	406x17
34x4	108x20	219x28	406x22

China	America	Germany	Japan	France	Britain	International
GB3077	AlSI	DIN	JIS	NE	BS	ISO
20Mn2	1320 1221	20Mn5	SMn21	20M5	150M19	-
30Mn2	1330	30Mn5	SMn24	32M5	150M28	-
35Mn2	1335	36Mn5	SMnl	35M5	150M36	-
40Mn2	1340 1341	-	SMn2	40M5	-	-
45Mn2	1345	46Mn7	SMn3	45M5	-	-
50Mn2	1052	50Mn7	-	55M5	-	-
20MnV	-	20MnV6	-		-	-
30Mn2MoW	-	--	-		-	-
27SiMn	-	27MnSi5	-		-	-
35SiMn	-	37MnSi5	-	38MS5	-	-
42SiMn	-	38MnSi4 46MnSi4	-	38MS5	-	-
20SiMn2MoV	-	-	-	-	-	-
25SiMn2MoV	-	-	-	-	-	-
37SiMn2MoV	-	-	-	-	-	-
40B	14B35	35B2	-	-	-	-
45B	50B46H	45B2	-	-	-	-
50B	14B50	-	-	-	-	-
4OM∏B	15B41	-	-	-	-	-
45MnB	15B48 50B44	-	-	-	-	-
20Mn2B	-	-	-	-	-	-
20MnMoB	80B20	-	-	-	-	-
15MnVB	-	-	-	-	-	-
-	-	-	-	-	-	-
-	-	-	-	-	-	-
20MnVB	-	-	-	-	-	-
40MnVB	-	-	-	-	-	-
20MnTiB	-	-	-	-	-	-
25MnTiBRE	-	-	-	-	-	-
2OSiMnVB	-	-	-	-	-	-
15Cr	5015 5115	15Cr3	SCr21	12C3	523A14 523M15	-
15CrA	-	-	-	-	-	-
20Cr	5120	20Cr4	SCr22	18C3 18C4	527A19 527M20	683/11 20Cr4 20CrS4
30Cr	5130	28Cr4	SCr2	28C4 32C4	530A30 530A32	-
35Cr	5135	34Cr4 37Cr4	SCr3	38C4	530A36	683/8 3、 3a、 3b
40Cr	5140	38Cr4 41Cr4	SCr4	42C4	530A40 530M40	683/1 4、 4a^ 4b
45Cr	5145	42Cr4	SCR5	45C4	-	-
50Cr	5150 5152	-	-	50C4	En48	-
38CrSi	-	-	-	-	-	-
12CrMo	4119	13CrMo44	-	12CD4 15CD2	-	-
15CrMo	ASTM A-387Gr. B	15CrMo5 16CrMo44	SCM21	15CD4. 05	BS1653	-
20CrMo	4118	20CrMo5 22CrMo4	SCM22	18CD4 20CD4	CDS 12 CDSllO	-
30CrMo	4130	25CrMo4	SCM2	30CD4	CDS 13	-
30CrMoA	-	32CrMol2 3ICRMo12	-	-	-	-
35CrMo	4135 4137	34CrMo4 35CrMo4	SCM3	35CD4	78A37	683/1 C35ea C35eb
42CrMo	4140 4142	41CrMo4 42CrMo4	SCM4	40CD4 42CD4	708M40 708A42 709M40	683/1 3
12CrMoV	-	-	-	-	-	-
35CrMoV	-	35CrMoV5	-	-	-	-
12CrlMoV	-	13CrMoV4.2	-	-	-	-
25Cr2MoVA	-	24CrMoV5.5	-	-	-	-
25Cr2MolVA	-	-	-	-	-	-
20CR3MoWVA	-	21CrVMoW12	-	-	-	-
38CrMoΛl	6370 (ΛMS)	34CrAlMo5 41CrAlMo7	SACM645	40CAD6.12	905M39	683/10 41CrAlMo74
20CrV	6120	22CrV4	-	22CrV4	-	-
40CrV	6140	42CrV	-	42CrV4	-	-
50CrVA	6150	50CrV4	SUPlO	50CV4	735A50	-
15CrMn	-	16MnCr5	-	16MC5	-	-
20CrMn	5120	20MnCr5	SMC21	20MC5	-	-
40CrMn	5140	-	SMC3	-	-	-
20CrMnSi	-	-		-	-	-
25CrMnSi	-	-	SMKl	-	-	-
30CrMnSi	-	-	-	-	-	-
30CrMnSiA	-	-	-	-	-	-
35CrMnSiA	-	-	SMK2	-	-	-
20CrMnMo	4119	20CrMo5	SCM23	-	-	-
40CrMnMo	4140	-	-	-	-	-
20CrMnTi	-	-	SMK22	-	-	-
30CrMnTi	-	30MnCrTi4	-	-	-	-
20CrNi	3120	20NiCr6	-	20NC6	637A16 637M17	-
40CrNi	3140	46NiCr6	SNCl	35NC6	640A35 640M40	-
45CrNi	3145	45NiCr6	-	-	-	-
50CrNi	3150	-	-	-	-	-
12CrNi2	3115	14NiCrlO	SNC21	IONCll 14NC11	-	-
12CrNi3	3310	13NiCrl2	SNC22	10NC12 14NC12	655A12 655M13	-
20CrNi3	-	22NiCrl4	-	20NC11	-	-
30CrNi3	-	28NiCrlO 31NiCrl4	SNC2	30NC11 30NC12	-	-
37CrNi3	-	35NiCrl8	SNC3	35NC15	-	-
12Cr2Ni4	E3310	14NiCrl8	-	12NC15	-	-
20Cr2Ni4	E3316	22NiCrl4	-	20NC14	659A15 659M15	-
20CrNiMo	8620 8720	20NiCrMo2 21NiCrMo2	-	20NCD2	805A20 805M20	-
40CrNiMoA	4340 9840	36NiCrMo4 40NiCrMo6	SNCM8	35NCD5 40NCD3	817M40 816M40	-
45CrNiMoVA	4437	-	SNCM9	-	-	-
18Cr2Ni4WA
25Cr2Ni4WA

Applications
Carbon steel welded pipes have a wide range of applications and play an important role in industries such as boilers, automobiles, ships, construction, furniture, as well as various machinery, brackets, mining, and containers. At the same time, carbon steel welded pipes can also be used for fluid transportation of materials such as water, oil, and gas.

Project Cases

Additional Processing Technology
We can provide steel pipe treatment services such as 3PE anti-corrosion, as well as processing services such as bending, cutting, punching, and marking.

Product Packaging

Product Transportation

China	America	Germany	Japan	France	Britain	International
GB3077	AlSI	DIN	JIS	NE	BS	ISO
20Mn2	1320 1221	20Mn5	SMn21	20M5	150M19	-
30Mn2	1330	30Mn5	SMn24	32M5	150M28	-
35Mn2	1335	36Mn5	SMnl	35M5	150M36	-
40Mn2	1340 1341	-	SMn2	40M5	-	-
45Mn2	1345	46Mn7	SMn3	45M5	-	-
50Mn2	1052	50Mn7	-	55M5	-	-
20MnV	-	20MnV6	-		-	-
30Mn2MoW	-	--	-		-	-
27SiMn	-	27MnSi5	-		-	-
35SiMn	-	37MnSi5	-	38MS5	-	-
42SiMn	-	38MnSi4 46MnSi4	-	38MS5	-	-
20SiMn2MoV	-	-	-	-	-	-
25SiMn2MoV	-	-	-	-	-	-
37SiMn2MoV	-	-	-	-	-	-
40B	14B35	35B2	-	-	-	-
45B	50B46H	45B2	-	-	-	-
50B	14B50	-	-	-	-	-
4OM∏B	15B41	-	-	-	-	-
45MnB	15B48 50B44	-	-	-	-	-
20Mn2B	-	-	-	-	-	-
20MnMoB	80B20	-	-	-	-	-
15MnVB	-	-	-	-	-	-
-	-	-	-	-	-	-
-	-	-	-	-	-	-
20MnVB	-	-	-	-	-	-
40MnVB	-	-	-	-	-	-
20MnTiB	-	-	-	-	-	-
25MnTiBRE	-	-	-	-	-	-
2OSiMnVB	-	-	-	-	-	-
15Cr	5015 5115	15Cr3	SCr21	12C3	523A14 523M15	-
15CrA	-	-	-	-	-	-
20Cr	5120	20Cr4	SCr22	18C3 18C4	527A19 527M20	683/11 20Cr4 20CrS4
30Cr	5130	28Cr4	SCr2	28C4 32C4	530A30 530A32	-
35Cr	5135	34Cr4 37Cr4	SCr3	38C4	530A36	683/8 3、 3a、 3b
40Cr	5140	38Cr4 41Cr4	SCr4	42C4	530A40 530M40	683/1 4、 4a^ 4b
45Cr	5145	42Cr4	SCR5	45C4	-	-
50Cr	5150 5152	-	-	50C4	En48	-
38CrSi	-	-	-	-	-	-
12CrMo	4119	13CrMo44	-	12CD4 15CD2	-	-
15CrMo	ASTM A-387Gr. B	15CrMo5 16CrMo44	SCM21	15CD4. 05	BS1653	-
20CrMo	4118	20CrMo5 22CrMo4	SCM22	18CD4 20CD4	CDS 12 CDSllO	-
30CrMo	4130	25CrMo4	SCM2	30CD4	CDS 13	-
30CrMoA	-	32CrMol2 3ICRMo12	-	-	-	-
35CrMo	4135 4137	34CrMo4 35CrMo4	SCM3	35CD4	78A37	683/1 C35ea C35eb
42CrMo	4140 4142	41CrMo4 42CrMo4	SCM4	40CD4 42CD4	708M40 708A42 709M40	683/1 3
12CrMoV	-	-	-	-	-	-
35CrMoV	-	35CrMoV5	-	-	-	-
12CrlMoV	-	13CrMoV4.2	-	-	-	-
25Cr2MoVA	-	24CrMoV5.5	-	-	-	-
25Cr2MolVA	-	-	-	-	-	-
20CR3MoWVA	-	21CrVMoW12	-	-	-	-
38CrMoΛl	6370 (ΛMS)	34CrAlMo5 41CrAlMo7	SACM645	40CAD6.12	905M39	683/10 41CrAlMo74
20CrV	6120	22CrV4	-	22CrV4	-	-
40CrV	6140	42CrV	-	42CrV4	-	-
50CrVA	6150	50CrV4	SUPlO	50CV4	735A50	-
15CrMn	-	16MnCr5	-	16MC5	-	-
20CrMn	5120	20MnCr5	SMC21	20MC5	-	-
40CrMn	5140	-	SMC3	-	-	-
20CrMnSi	-	-		-	-	-
25CrMnSi	-	-	SMKl	-	-	-
30CrMnSi	-	-	-	-	-	-
30CrMnSiA	-	-	-	-	-	-
35CrMnSiA	-	-	SMK2	-	-	-
20CrMnMo	4119	20CrMo5	SCM23	-	-	-
40CrMnMo	4140	-	-	-	-	-
20CrMnTi	-	-	SMK22	-	-	-
30CrMnTi	-	30MnCrTi4	-	-	-	-
20CrNi	3120	20NiCr6	-	20NC6	637A16 637M17	-
40CrNi	3140	46NiCr6	SNCl	35NC6	640A35 640M40	-
45CrNi	3145	45NiCr6	-	-	-	-
50CrNi	3150	-	-	-	-	-
12CrNi2	3115	14NiCrlO	SNC21	IONCll 14NC11	-	-
12CrNi3	3310	13NiCrl2	SNC22	10NC12 14NC12	655A12 655M13	-
20CrNi3	-	22NiCrl4	-	20NC11	-	-
30CrNi3	-	28NiCrlO 31NiCrl4	SNC2	30NC11 30NC12	-	-
37CrNi3	-	35NiCrl8	SNC3	35NC15	-	-
12Cr2Ni4	E3310	14NiCrl8	-	12NC15	-	-
20Cr2Ni4	E3316	22NiCrl4	-	20NC14	659A15 659M15	-
20CrNiMo	8620 8720	20NiCrMo2 21NiCrMo2	-	20NCD2	805A20 805M20	-
40CrNiMoA	4340 9840	36NiCrMo4 40NiCrMo6	SNCM8	35NCD5 40NCD3	817M40 816M40	-
45CrNiMoVA	4437	-	SNCM9	-	-	-
18Cr2Ni4WA
25Cr2Ni4WA

FAQ

How to contact us?

If you are interested in our products, please feel free to contact us at any time. You can contact our product manager through email or the message board at the bottom of the page.

What are your main products?

Our main products are stainless steel products, galvanized steel products, aluminum profiles and lead products. In addition, we also have steel pipes, steel plates and other related steel products.

Do you provide customized product services?

Of course, our professional R&D team can design and produce the products you need according to your specifications and drawings. For example: special size, special control, OEM, etc.

How long will it take for me to get the price?

Please provide product specifications such as material, size, quantity and other requirements. We usually quote within 6 hours, and steel prices fluctuate with the market every day. Our prices are very competitive because we have a stable supply chain. If you would like to get a price as soon as possible, please call us or let us know by email so that we can prioritize your inquiry.

Are you a manufacturer?

Our main products are stainless steel products and galvanized steel products. Our own factory, coupled with our many years of experience in the domestic steel market and long-term cooperation with upstream and downstream suppliers, stable prices, stable quality and stable supply capabilities allow us to have great advantages in stainless steel and galvanized products. At the same time we also have product resources of carbon steel products and color-coated coils, I believe this will also make you satisfied.

Can we visit your factory?

Of course, we welcome you to visit our factory on site or visit our production line through online video to understand our strength and quality. We will arrange a professional team to serve you.You just need to send your itinerary and leave the rest to us.

What say our customers

We have been working with Guangbo since 2008 and they have supported the rapid growth of my business. I am lucky to have a partner I can rely on.

★★★★★

Colin Murphy

Your people have been dependable, with strong sense of responsibility and expertise. We appreciate the efforts you and your staff have made. Despite the sometimes urgent nature of our orders, they have all been accurate and delivered on time. It was a pleasure to work with all of you.

★★★★★

Johan Gouws

Keywords

Carbon steel round welded pipe