Carbon Steel Seamless & ERW Pipes – Strength & Versatility

KVN Steel Mumbai, Maharashtra, India. is a prominent producer, global exporter, and trusted stockist of Carbon Steel Seamless and ERW Pipes & Tubes. These products are available in a wide variety of lengths, thicknesses, and dimensions as per client demands.

Seamless carbon steel pipes are crafted by piercing solid round billets using thermal and mechanical pressure until a hollow tube is formed. Tube manufacturing also involves heating large steel billets to a high temperature and shaping them into shells, which are then rolled to create the final tube. ERW (Electric Resistance Welded) pipes are manufactured by rolling metal and welding it longitudinally, forming a visible weld seam. In contrast, seamless pipes are continuous with no weld throughout their length.

Leading range includes: Carbon Steel Seamless Pipes, A53 Grade B ERW Pipes, ASTM A106 Grade B Seamless Tubes, Low-Temperature ASTM A333 Gr.6 Pipes, and ASTM A672 C60/C65/C70 EFW Tubes – all made in India.

For larger diameter tubes, Plug Mill technology is employed, whereas CPE (Cross Piercing Elongation) is used for tubes up to 7 inches. These production methods are widely accepted worldwide. Seamless and welded (ERW) are the primary pipe types, with ERW often referred to as welded pipes. A53 is a standard specification for ERW pipes, while A106B is commonly used for seamless variants, eliminating the need for welding.

Also available: ASTM A671 Welded Carbon Steel Tubes, ASTM A53/SA53 Pipes, SA106 Grade B Seamless Pipes, ASTM A333 LTCS Pipes, and Stainless Steel Pipes and Tubes are available for bulk supply and export.

Seamless and ERW tubing often undergo a drawing process, where tubes are pulled through dies to meet dimensional and strength requirements. These pipes consist primarily of carbon and iron, with varying carbon content determining grades. Carbon steel is known for its thermal stability and melting point, making these tubes ideal for applications in oil and gas pipelines, railways, steam lines, sewage systems, and chemical plants.

To ensure top-notch quality, every batch undergoes hardness testing, chemical analysis, and other quality checks before dispatch. Packaging is done with care using wooden crates, steel or wooden boxes, hexagonal bundles, or specialized containers for U-bend tubes – all tailored to client specifications.

Specification :

ASTM A106 GR A/B , ASTM A105, ASTM A53 GR A/B, API 5L / DIN1626, DIN1629, DIN17175, DIN 2448, JIS G3452, JIS G3454, JIS G3455, JIS G3456, JIS G3457, JIS G3

Size :

1/2” NB to 36” NB

Wall Thickness :

0.5mm to 85mm

Type :

Seamless

Form :

Round, Square, Rectangular, Oval, Hydraulic Etc

Length :

Single Random, Double Random & Cut Length.

Schedules :

SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Inspection, Test Reports : :

Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports, India Boiler Regulations (IBR) Test Certificate

Packing :

Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests

End :

Plain End, Beveled End, Treaded

Surface :

Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE

Chemical Composition of Carbon Steel Pipes and Tubes

specification	Grade	Chemical Composition [%]
		C		Mn		P	S	Si		Cr		Mo		Cu	Ni	V
		Min	Max.	Min	Max.	Max.	Max.	Min.	Max	Min.	Max	Min.	Max	Max	Max	Max
HYDROCARBON PROCESS INDUSTRY/STRUCTURAL/PRESSURE VESSEL TUBES
ASTM A-53	A B	-	0.25 0.30	- -	0.95 1.20	0.050 0.050	0.045 0.045	- -	- -	- -	0.40 0.40	- -	0.15 0.15	0.40 for S 0.40 for S	0.40 0.40	0.08 0.08
ASTM A-106	A B C	-	0.25 0.30 0.35	0.27 0.29 0.29	0.93 1.06 1.06	0.035 0.035 0.035	0.035 0.035 0.035	0.10 0.10 0.10	-	-	0.40 0.40 0.40	-	0.15 0.15 0.15	0.40 0.40 0.40	0.40 -	0.08 0.08 0.08
ASTM A333 & A 334	1 6	- -	0.30 0.30	0.40 0.29	1.06 1.06	0.025 0.025	0.025 0.025	- 0.10	- -	- -	- -	- -	- -	- -	- -	- -
SEAMLESS COLD DRAWN PRECISION STEEL TUBES FOR MECHANICAL APPLICATIONS/HYDRAULIC/PNEUMATIC POWER SYSTEMS
EN 10305-1/ EN10305-4	E 235 E 355		0.17 0.22		1.2 1.6	0.025 0.025	0.025 0.025		0.35 0.55							0.02 0.02
EN 10216-1	P195 TR1 P235 TR1		0.13 0.16		0.7 1.2	0.025 0.025	0.02 0.02		0.35 0.35		0.3 0.3		0.08 0.08	0.3 0.3	0.3 0.3
EN 10216-2	P235 GH		0.16		1.2	0.025	0.02		0.35		0.3		0.08	0.3	0.3	0.02
DIN 2391	St - 45 St - 45 St - 52	- - -	0.17 0.21 0.22	0.40 0.40 -	- - 1.60	0.025 0.025 0.025	0.025 0.025 0.025	-	0.35 0.35 0.55	-	-	-	-	-	-	-
ASTM A-519	SAE 1010 SAE 1018 SAE 1026 SAE 1035 SAE 1040 SAE 1518 SAE 1541 SAE 4130	0.08 0.15 0.22 0.32 0.37 0.15 0.36 0.28	0.13 0.20 0.28 0.38 0.44 0.21 0.44 0.33	0.30 0.60 0.60 0.60 0.60 1.10 1.35 0.40	0.60 0.90 0.90 0.90 0.90 1.40 1.65 0.60	0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040	0.050 0.050 0.050 0.050 0.050 0.050 0.050 0.040	- - - - - - - 0.15	- - - - - - - 0.35	- - - - - - - 0.80	- - - - - - - 1.10	- - - - - - - 0.15	- - - - - - - 0.25	- - - - - - - -	- - - - - - - -	- - - - - - - -
BOILER/HEAT EXCHANGER/SUPERHEATER & CONDENSER TUBES
ASTM A179	-	0.06	0.18	0.27	0.63	0.035	0.035	-	-	-	-	-	-	-	-	-
ASTM A192		0.06	0.18	0.27	0.63	0.035	0.035	-	0.25	-	-	-	-	-	-	-
ASTM A 210	A-1 C	- -	0.27 0.35	- 0.29	0.93 1.06	0.035 0.035	0.035 0.035	0.10 0.10	- -	- -	- -	- -	- -	- -	- -	- -
ASTM A 213	T-11 T-12 T-22	0.05 0.05 0.05	0.15 0.15 0.15	0.30 0.30 0.30	0.60 0.61 0.60	0.025 0.025 0.025	0.025 0.025 0.025	0.50 - -	1.00 0.50 0.50	1.00 0.80 1.90	1.50 1.25 2.60	0.44 0.44 0.87	0.65 0.65 1.13	-	-	-
ASTM A335	P-11 P-12 P-22	0.05 0.05 0.05	0.15 0.15 0.15	0.30 0.30 0.30	0.60 0.61 0.60	0.025 0.025 0.025	0.025 0.025 0.025	0.50 - -	1.00 0.50 0.50	1.00 0.80 1.90	1.50 1.25 2.60	0.44 0.44 0.87	0.65 0.65 1.13	-	-	-
BS 3059 Pt I	320	-	0.16	0.30	0.70	0.040	0.040	0.10	0.35	-	-	-	-	-	-	-
BS 3059 Pt II	622-490	0.08	0.15	0.40	0.70	0.030	0.030	-	0.50	2.00	2.50	0.90	1.20	-	-	-
DIN 1629	St- 37.0 St - 52	- -	0.17 0.22	- -	- -	0.040 0.040	0.040 0.035	- -	- -	- -	- -	- -	- -	- -	- -	- -
DIN 17175	St - 35.8 St - 45.8	- -	0.17 0.21	0.40 0.40	0.80 1.20	0.040 0.040	0.040 0.040	0.10 0.10	0.35 0.35	- -	- -	- -	- -	- -	- -	- -
RAILWAYS
IS:1239 Pt I	-	-	-	-	-	0.050	0.050	-	-	-	-	-	-	-	-	-
IS:1161	YST-210 YST-240 YST-310	-	0.12 0.16 0.25	- - -	0.60 1.20 1.30	0.040 0.040 0.040	0.040 0.040 0.040	-	-	-	-	-	-	-	-	-

Mechanical Properties Of Carbon Steel Pipes and Tubes

Mechnical Properties				SPECIFIC REQUIREMENT
Specification	Tensile Strength	Yield Strength	Elongation	SPECIFIC REQUIREMENT
	Mpa	Mpa	50mm MIN Longitudinal
ASTM A 53/ASTM A 53/B ASTM A 106/A ASTM A 106/B ASTM A 106/C	331MIN 413MIN 330MIN 415MIN 485MIN	207 MIN 240MIN 205MIN 240MIN 275MIN	36 29.5 35/28 30/22 30/22	Cr Mo Cu Ni Va 0.40 0.15 0.40 0.40 0.08 five elements not to exceed 1%
ASTM A 333/1ASTM A 333/6 ASTM A 334/1 ASTM A 334/6	380MIN 415MIN 380MIN 415MIN	205MIN 240MIN 205MIN 240MIN	25/20 30/22 35/28 30/22	Impact AS-50F FOR 40X10J/18/14 -50F 40X10J/18/14 90 HRB MAX