Carbon Steel Pipes & Tubes Supplier & Exporter in India
Metinox Overseas is a trusted name in the manufacturing, supply, and export of high-quality carbon steel pipes and tubes in India. Carbon steel piping is widely used across multiple industries due to its strength, durability, and adaptability. It plays a vital role in construction, water distribution systems, oil and gas transportation, and structural applications. Commonly used grades of carbon steel pipes include API 5L Grade B, X42 to X70, ASTM A106 Grade B, ASTM A53 Grade B, ASTM A252 Grade 3, and ASTM A333 Grade 6.
Carbon steel pipes and tubes, often referred to as CS pipes, are produced using advanced manufacturing processes. The process typically begins by converting solid round billets or steel ingots into hollow sections through piercing. These are then processed further using hot rolling, cold rolling, or cold drawing techniques to achieve the desired dimensions and properties. Due to their excellent strength and ability to withstand high pressure, carbon steel pipes are widely used in shipbuilding, infrastructure development, power plants, and fertilizer industries.
Based on the manufacturing technique, carbon steel pipes are categorized into seamless and welded types. Seamless pipes are manufactured through hot rolling or cold drawing processes, resulting in uniform structure and superior pressure resistance. On the other hand, welded pipes are produced by forming steel plates or strips into cylindrical shapes and joining them through methods such as electric resistance welding (ERW) or submerged arc welding (SAW). Both types are extensively used depending on the specific requirements of the application.
Request a quote now!Table of Contents
- Types of Carbon Steel Pipes & Tubes
- Carbon Steel Pipes & Tubes Specification
- Chemical Composition of Carbon Steel Pipes & Tubes
- Mechanical Properties of Carbon Steel Pipes & Tubes
- Carbon Steel Pipes & Tubes Price List (2025–2026)
- Pipe Weight Chart (Carbon Steel Pipes)
- Carbon Steel Pipe Grade Comparison Chart
- Key Applications of Carbon Steel Pipes & Tubes
- Why Choose Us for Carbon Steel Pipes & Tubes
- Carbon Steel Pipe Standards & Certifications
- Quality Testing & Inspection
- Packaging & Global Delivery
- Pipe Size Conversion Chart (NB to Inches to MM)
- FAQ’s About Carbon Steel Pipes & Tubes
Carbon Steel Pipes are Available in two main types based on manufacturing process:
Seamless Carbon Steel Pipes: Manufactured through hot rolling or cold drawing without any welded seams. These pipes offer superior strength, uniform structure, and excellent pressure resistance, making them ideal for high-pressure applications in oil & gas, power generation, and chemical processing.
Welded Carbon Steel Pipes: Produced by forming steel plates or coils into cylindrical shapes and joining them through welding processes such as ERW (Electric Resistance Welded), SAW (Submerged Arc Welded), or LSAW (Longitudinal Submerged Arc Welded). Welded pipes are cost-effective and suitable for structural applications, water distribution, and general-purpose piping.
Carbon Steel Pipes & Tubes Specification
API 5L X42 / X52 / X60 Seamless Pipes
| Specification | Details |
|---|---|
|
Size Range |
2” to 24” |
|
Wall Thickness |
STD, XH, 100, 120, 160, XXH |
|
Material Grades |
PSL1, PSL2 |
ASTM A333 Grade 1 / 6 Low Temperature Seamless Pipes
| Specification | Details |
|---|---|
|
Size Range |
½” to 24” |
|
Wall Thickness |
STD, XH, 100, 120, 160, XXH |
|
Application |
Low Temperature Service |
ASTM A333 Grade 1 / 6 Low Temperature Seamless Pipes
| Specification | Details |
|---|---|
|
Size Range |
½” to 24” |
|
Wall Thickness |
STD, XH, 100, 120, 160, XXH |
|
Application |
Low Temperature Service |
A53 / API 5L ERW Pipes (Electric Resistance Welded)
| Specification | Details |
|---|---|
|
Size Range |
2” to 24” |
|
Schedules |
10, 20, STD, XH |
|
Custom Wall |
0.120”, 0.156”, 0.188”, 0.203”, 0.219” & more |
|
Available Grades |
API 5L Gr B, X42, X52, X60, X65 (PSL1 & PSL2) |
API 5L DSAW / SAW Pipes
| Specification | Details |
|---|---|
|
Size Range |
26” to 60” |
|
Schedules |
20, 30, STD, XH |
|
Material Grades |
API 5L Gr B, X42, X52, X60, X65 (PSL1 & PSL2) |
Carbon Steel Tubes – Specifications
| Parameter | Details |
|---|---|
|
Grades |
SA179, SA192, SA210, SA178, SA214, API 5L |
|
Size Range |
1/8” NB to 24” NB |
|
Schedules |
Sch 40, 80, 160, XXS |
|
Shapes |
Round, Square, Rectangular, Coil, U-Tube |
|
Length Options |
Single Random, Double Random, Custom Length |
|
End Finish |
Plain End, Bevelled End |
|
Manufacturing Type |
Seamless / ERW / Welded |
|
Certification |
EN 10204 3.2B Mill Test Certificate |
|
Standard Compliance |
ASTM A530 / A530M |
|
Dimensional Standard |
ANSI B36.10 |
|
Outside Diameter |
1.250” – 6.000” (30–150 mm) |
|
Wall Thickness Range |
0.095” – 1.000” (2.5–25 mm) |
Chemical Composition of Carbon Steel Pipes & Tubes
The chemical composition of carbon steel pipes varies depending on the grade and standard. Below is a comparison of commonly used grades:
| Element | ASTM A53 Gr B | ASTM A106 Gr B | API 5L Gr B |
|---|---|---|---|
|
Carbon (C) |
≤ 0.30% |
≤ 0.30% |
≤ 0.28% |
|
Manganese (Mn) |
0.29 – 1.06% |
0.29 – 1.06% |
0.80 – 1.20% |
|
Phosphorus (P) |
≤ 0.035% |
≤ 0.035% |
≤ 0.030% |
|
Sulfur (S) |
≤ 0.035% |
≤ 0.035% |
≤ 0.030% |
|
Silicon (Si) |
≥ 0.40% |
≥ 0.10% |
≤ 0.30% |
Mechanical Properties of Carbon Steel Pipes & Tubes
| Property | Grade A | Grade B | Grade C |
|---|---|---|---|
|
Tensile Strength (Min) |
48,000 psi (330 MPa) |
60,000 psi (415 MPa) |
70,000 psi (485 MPa) |
|
Yield Strength (Min) |
30,000 psi (205 MPa) |
35,000 psi (240 MPa) |
40,000 psi (275 MPa) |
Carbon Steel Pipes & Tubes Price List (2025–2026)
Price Per Kg (Indicative Range)
|
Pipe / Tube Type |
Price Range (INR per Kg) |
|---|---|
|
ERW Carbon Steel Pipes |
₹70 – ₹85/kg |
|
Seamless Carbon Steel Pipes |
₹95 – ₹120/kg |
|
Black Carbon Steel Pipes |
₹75 – ₹90/kg |
|
GI Coated Carbon Steel Pipes |
₹85 – ₹110/kg |
|
Hot Rolled Carbon Steel Pipes |
₹90 – ₹115/kg |
Average market price: ₹70 to ₹110 per kg depending on grade, size, and type
Note: Prices are indicative and subject to change based on quantity, grade, size, and current market conditions. For accurate quotations, please contact our sales team.
Pipe Weight Chart (Carbon Steel Pipes)
The weight of carbon steel pipes depends on the outside diameter (OD) and wall thickness (schedule). Below is a standard reference chart for commonly used sizes (approximate values):
Weight Chart – Kg per Meter
| NB Size | OD (mm) | SCH 40 (kg/m) | SCH 80 (kg/m) |
|---|---|---|---|
|
½” |
21.3 |
1.27 |
1.62 |
|
1” |
33.4 |
2.50 |
3.24 |
|
2” |
60.3 |
5.44 |
8.07 |
|
3” |
88.9 |
8.63 |
12.70 |
|
4” |
114.3 |
11.50 |
16.10 |
|
6” |
168.3 |
18.97 |
28.30 |
|
8” |
219.1 |
28.60 |
42.60 |
|
10” |
273.0 |
40.50 |
60.30 |
|
12” |
323.9 |
53.70 |
79.50 |
Pipe Weight Formula
For precise calculation, use the standard formula:
W=π4×(D2−d2)×ρW = \frac{\pi}{4} \times (D^2 - d^2) \times \rhoW=4π×(D2−d2)×ρ
Where:
-
W = Weight per unit length
-
D = Outside Diameter
-
d = Inside Diameter
-
ρ = Density of steel (≈ 7850 kg/m³)
Carbon Steel Pipe Grade Comparison Chart
| Specification | ASTM A106 Gr B | API 5L Gr B | DIN 1629 St 52 |
|---|---|---|---|
|
Standard Type |
ASTM (USA) |
API (Oil & Gas) |
DIN (Germany) |
|
Pipe Type |
Seamless |
Seamless / Welded |
Seamless |
|
Tensile Strength |
~415 MPa |
~415 MPa |
~520 MPa |
|
Yield Strength |
~240 MPa |
~245 MPa |
~355 MPa |
|
Temperature Range |
High-temperature use |
Moderate conditions |
Structural applications |
|
Pressure Handling |
High pressure |
Medium to high pressure |
Medium pressure |
|
Common Applications |
Boilers, refineries |
Oil & gas pipelines |
Mechanical & structural |
|
Weldability |
Good |
Good |
Very Good |
Key Insights
-
ASTM A106 Gr B → Best for high temperature & pressure systems
-
API 5L Gr B → Ideal for pipeline and oil & gas transmission
-
DIN 1629 St 52 → Preferred for structural and mechanical use
Key Applications of Carbon Steel Pipes & Tubes
Carbon steel pipes and tubes are widely used across multiple industries due to their strength, durability, and cost-effectiveness. Common applications include:
- Heat transfer equipment such as heat exchangers
- Precision instrumentation and control systems
- Hydraulic and pneumatic pipelines
- Nuclear and thermal power generation plants
- Automotive manufacturing and structural components
- Aerospace engineering applications
- Medical and healthcare equipment
- Pharmaceutical processing units
- Oil cooling systems
- Industrial condensers
Why Choose Us for Carbon Steel Pipes & Tubes
Metinox Overseas has been manufacturing and exporting carbon steel pipes since 2009, serving clients across 40+ countries including UAE, Saudi Arabia, Qatar, Singapore, Kenya, and South Africa. Our ISO 9001:2015 certified facility in Mumbai operates with stringent quality protocols, and we maintain strategic partnerships with leading steel mills to ensure consistent material quality and competitive pricing.
Our strengths include:
- Wide range of seamless and welded carbon steel pipes
- Consistent product quality with strict testing standards
- Competitive pricing without compromising performance
- Ability to fulfill bulk and custom requirements
- Timely delivery across domestic and international markets
We are committed to providing durable, high-performance carbon steel solutions that add value to your projects.
Carbon Steel Pipe Standards & Certifications
Our carbon steel pipes comply with international standards including ASTM (American Society for Testing and Materials), API (American Petroleum Institute), ASME (American Society of Mechanical Engineers), and DIN (Deutsches Institut für Normung). We hold ISO 9001:2015 certification and provide Mill Test Certificates (MTC) as per EN 10204 3.1/3.2 with every shipment.
Quality Testing & Inspection
Every carbon steel pipe undergoes rigorous quality testing including hydrostatic testing, ultrasonic testing (UT), eddy current testing (ECT), dimensional inspection, visual examination, and chemical composition analysis. Third-party inspection is available upon request from agencies such as SGS, TUV, and Lloyd's Register.
Packaging & Global Delivery
Carbon steel pipes are carefully packaged in wooden crates, bundles with steel strapping, or as per customer requirements to ensure safe transportation. We offer flexible delivery options including FOB, CIF, and CFR terms. Our global logistics network enables timely delivery to major ports worldwide.
Pipe Size Conversion Chart (NB to Inches to MM)
Below is a standard reference chart showing Nominal Bore (NB) sizes along with their corresponding Outside Diameter (OD) in inches and millimeters:
| NB (Nominal Bore) | OD (Inches) | OD (MM) |
|---|---|---|
|
½” |
0.84” |
21.3 mm |
|
¾” |
1.05” |
26.7 mm |
|
1” |
1.315” |
33.4 mm |
|
1¼” |
1.66” |
42.2 mm |
|
1½” |
1.90” |
48.3 mm |
|
2” |
2.375” |
60.3 mm |
|
2½” |
2.875” |
73.0 mm |
|
3” |
3.50” |
88.9 mm |
|
4” |
4.50” |
114.3 mm |
|
5” |
5.563” |
141.3 mm |
|
6” |
6.625” |
168.3 mm |
|
8” |
8.625” |
219.1 mm |
|
10” |
10.75” |
273.0 mm |
|
12” |
12.75” |
323.9 mm |
|
14” |
14.00” |
355.6 mm |
|
16” |
16.00” |
406.4 mm |
|
18” |
18.00” |
457.2 mm |
|
20” |
20.00” |
508.0 mm |
|
24” |
24.00” |
609.6 mm |
Important Notes
- NB (Nominal Bore) is an approximate internal diameter and not the exact measurement.
- OD (Outside Diameter) remains constant for a given NB regardless of schedule.
- Wall thickness varies based on pipe schedule (SCH 10, 40, 80, etc.).
FAQ’s About Carbon steel pipes & tubes
Carbon steel tubes are widely utilized in industries that require strength, durability, and cost efficiency. They are commonly found in applications such as fluid transportation, structural frameworks, heat exchangers, boilers, automotive components, and industrial machinery. Their versatility makes them suitable for both high-pressure and general-purpose uses.
Yes, carbon steel pipes can rust when exposed to moisture and oxygen, as they do not contain significant corrosion-resistant elements like chromium. However, rusting can be minimized or prevented through protective measures such as coatings, painting, galvanizing, or using corrosion inhibitors depending on the operating environment.
Carbon steel tubes are available in a wide range of sizes to meet different industrial requirements. Typically, they range from small diameters like 1/8 inch to large sizes up to 60 inches or more, depending on whether they are seamless, ERW, or SAW pipes. Various wall thicknesses (schedules) are also available, including standard, extra heavy, and custom thickness options.
Selecting the right carbon steel tube depends on several factors, including the intended application, pressure and temperature conditions, required strength, corrosion exposure, and industry standards. It is important to consider the correct grade, size, wall thickness, and manufacturing type (seamless or welded). Consulting with a supplier or technical expert can help ensure the best choice for your specific project needs.
Seamless pipes are manufactured from solid billets through piercing and rolling without any welded joints, offering superior strength and uniformity. Welded pipes are made by forming steel plates into tubes and joining edges through ERW or SAW processes. Seamless pipes are preferred for high-pressure applications, while welded pipes are cost-effective for structural and general-purpose use.
The most widely used carbon steel pipe grades include ASTM A106 Grade B for high-temperature service, API 5L Grade B and X42-X70 for oil and gas pipelines, ASTM A53 Grade B for structural and pressure applications, and ASTM A333 Grade 6 for low-temperature environments. Grade selection depends on operating pressure, temperature, and application requirements.
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