Carbon Steel Seamless /ERW Pipes / Tubes

Products Description

Carbon steel seamless pipes are manufactured through a process called hot rolling or cold drawing. In hot rolling, a solid round billet of carbon steel is heated and passed through a series of rollers to shape it into a hollow tube. The process involves applying heat and pressure to the billet until it forms a seamless tube. Cold drawing, on the other hand, involves pulling the heated billet through a die to reduce its diameter and form a seamless tube.

The manufacturing process of carbon steel seamless pipes is challenging and requires precision and expertise. The billets of steel are heated to the appropriate temperature and then passed through various rollers to achieve the desired shape and dimensions. The process ensures that the carbon steel forms a seamless, continuous tube without any joints or welds along its length.

In contrast, Electric Resistance Welding (ERW) pipes are made by rolling a strip of metal and then welding it lengthwise to form a tube. This process involves passing the strip through a series of rollers to shape it into a tube and then applying an electric current to create a weld along the length of the tube. This results in a joint or weld seam in the ERW pipes.

The absence of joints or welds in seamless pipes offers several advantages. It eliminates the risk of weak points or potential leakage, making seamless pipes more reliable and suitable for applications where a continuous, uninterrupted flow is required. Seamless pipes also tend to have better mechanical properties and can withstand higher pressure and temperature conditions compared to welded pipes.

In summary, carbon steel seamless pipes are produced through a hot rolling or cold drawing process, where solid billets of steel are shaped into seamless tubes without any joints or welds along their length. This manufacturing method ensures the pipes have excellent structural integrity, high strength, and reliability. In contrast, ERW pipes are formed by rolling and welding a strip of metal, resulting in a joint or weld seam along the length of the pipe.

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

Carbon Steel Seamless & ERW Pipes / Tubes Application Industries

Our Carbon Steel Seamless & ERW Pipes / Tubes are used in a wide range of applications and various industries. Below are a few of them:

Petrochemical Industry

Oil and Gas Industry

Chemical Industry

Power Plant Industry

Energy Industry

Pharmaceuticals Industry

Pulp & Paper Indusry

Food Processing Industry

Aerospace Industry

Refining Industry

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	-	-	-	-	-	-	-	-	-

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