ASTM A120 Pipe, ASTM A120 Seamless Pipe, ASTM A120 Schedule 40 Tube, SA120 A1 Material Tube Manufacturer, A120 Black Pipes, A120 Schedule 40 Galvanized Pipes Supplier
Amardeep Steel is a leading manufacturer, supplier, and exporter of ASTM A120 pipes in India. ASTM A120 carbon steel pipe is an electric-resistance-welded (ERW) steel pipe specification designed for conveying gas, water, and oil in fire protection systems, plumbing, and water well applications. Available in black steel and hot-dip galvanized finish, ASTM A120 pipes are stocked in Mumbai and exported worldwide to 80+ countries. We supply ASTM A120 carbon steel pipe in Schedule 40, Schedule 80, seamless, and welded types with full EN 10204 3.1 MTC documentation and third-party inspection on request.
The ASTM A120 pipe is made from carbon steel and contains various alloying elements such as manganese, phosphorus, and sulfur. These alloying elements are added to improve the mechanical properties of the steel pipe, such as its tensile strength, yield strength, and hardness.
The carbon content in the astm a120 steel pipe is responsible for its strength and durability. The higher the carbon content, the stronger and more durable the steel pipe. Carbon steel pipes are also known for their resistance to corrosion, making them suitable for use in harsh environments.
ASTM A120 carbon steel pipes are available in various sizes, from ½ inch to 6 inches in diameter. The pipes can be manufactured in different grades of carbon steel, such as ASTM A53 Grade A and Grade B, and can also be produced in different types of finishes, such as black or galvanized.
The electric-resistance-welding process used in the manufacture of ASTM A120 carbon steel pipes ensures that the pipes are strong and durable. The process involves heating the steel to a high temperature and then passing an electric current through it. The electric current fuses the steel together, creating a seamless and strong bond. In summary, ASTM A120 carbon steel pipes are a popular choice for conveying gas, water, and oil due to their strength, durability, and resistance to corrosion. They are available in various sizes and finishes and can be manufactured using different grades of carbon steel to meet specific application requirements.
ASTM A120 vs ASTM A53 Comparison
When evaluating ASTM A120 against its modern replacement, engineers most commonly compare it to ASTM A53 Grade B pipe. The table below summarises key differences. Where A120 was previously specified, ASTM A53 Grade A is now commonly used as the direct replacement.
|
Parameter |
ASTM A120 |
ASTM A53 Grade A |
ASTM A53 Grade B |
|
Pipe Type |
ERW Only |
Seamless & ERW |
Seamless & ERW |
|
Min. Tensile Strength |
415 MPa |
331 MPa |
415 MPa |
|
Min. Yield Strength |
255 MPa |
207 MPa |
241 MPa |
|
Max. Carbon |
0.27% |
0.25% |
0.30% |
|
Wall Thickness Limit |
3/8" max |
No limit |
No limit |
|
Finish |
Black / Galvanized |
Black / Galvanized |
Black / Galvanized |
|
Size Range |
1/4" to 30" |
1/8" to 26" |
1/8" to 26" |
|
Primary Use |
Plumbing, Fire Protection |
Low-pressure plumbing |
Pressure piping, structural |
|
Current Status |
Legacy (superseded) |
Active |
Active |
ASTM A120 Pipe Specification
|
ASTM A120 Size |
For Pipe- NPS 1/4″ – 30″ OD, Custom Size AvailableFor Tubes – 6.35mm o.d to 101.60mm o.d |
|
Heat Exchanger & Condenser pipe Grades |
ASTM A120 Pipe |
|
ASTM A120 Type |
Seamless A120 Pipe & Welded A120 Pipe |
|
Carbon Steel Length |
Double Random & Required Length, Single Random, & Custom Size Available |
|
Carbon Steel Shape/Form |
Square A120 Pipe, Rectangular / Rectangle A120 Pipe, Round A120 Pipe & Tubes, Coiled Tubes, “U” Shape Pipe & Tubes. |
|
ASTM A120 Tubes End |
Plain End, Beveled End, Treaded Protected With Plastic Caps |
|
Coating Of A120 tubes |
Anti-Corrosion Oil, Galvanised Finish, Black Painting, Finish as per Customer Requirements |
|
ASTM A120 Diameter |
NPS ¼” to 30” diameter, Custom Diameter Available |
|
ASTM A120 Origin |
Indian Origin, Japanese Origin, US Origin, Ukraine Origin, Russian Origin, Korean Origin, European Origin, |
|
Carbon Steel Grade |
Q235, Q345B, GR.B, Q195 |
|
ASTM A120 Schedule |
5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XS, XXS, STD |
ASTM A120 Carbon Steel Pipe Chemical Composition
|
Grade |
C(Max) |
Mn |
Si(Min) |
P(Max) |
S(Max) |
|
A1 |
0.27 |
Max 0.93 |
0.10 |
0.035 |
0.035 |
Mechanical Properties of ASME SA 120 A1 Steel Pipes
|
Grade |
Tensile Stress (Mpa) |
Yield Stress (Mpa) |
Elongation(%) |
|
A1 |
≥415 |
≥255 |
≥30 |
ASTM A120 Carbon Steel Pipes Dimensions
|
DN |
OD |
ASTM A53 GR. A / B |
ASTM A795 GR. A / B |
|||
|
SCH10S |
STD SCH40 |
SCH10 |
SCH30 SCH40 |
|||
|
MM |
INCH |
MM |
(mm) |
(mm) |
(mm) |
(mm) |
|
15mm |
1/2” |
21.3mm |
2.11 |
2.77 |
- |
2.77 |
|
20mm |
3/4” |
26.7mm |
2.11 |
2.87 |
2.11 |
2.87 |
|
25mm |
1” |
33.4mm |
2.77 |
3.38 |
2.77 |
3.38 |
|
32mm |
1-1/4” |
42.2mm |
2.77 |
3.56 |
2.77 |
3.56 |
|
40mm |
1-1/2” |
48.3mm |
2.77 |
3.68 |
2.77 |
3.68 |
|
50mm |
2” |
60.3mm |
2.77 |
3.91 |
2.77 |
3.91 |
|
65mm |
2-1/2” |
73mm |
3.05 |
5.16 |
3.05 |
5.16 |
|
80mm |
3” |
88.9mm |
3.05 |
5.49 |
3.05 |
5.49 |
|
90mm |
3-1/2" |
101.6mm |
3.05 |
5.74 |
3.05 |
5.74 |
|
100mm |
4” |
114.3mm |
3.05 |
6.02 |
3.05 |
6.02 |
|
125mm |
5” |
141.3mm |
3.4 |
6.55 |
3.4 |
6.55 |
|
150mm |
6” |
168.3mm |
3.4 |
7.11 |
3.4 |
7.11 |
|
200mm |
8” |
219.1mm |
3.76 |
8.18 |
4.78 |
7.04 |
|
250mm |
10” |
273.1mm |
4.19 |
9.27 |
4.78 |
7.8 |
ASTM A120 Pipe Weight Per Meter (Schedule 40)
|
NPS |
OD (mm) |
Wall Thickness (mm) |
Weight (kg/m) |
|
1/2" |
21.3 |
2.77 |
1.27 |
|
3/4" |
26.7 |
2.87 |
1.69 |
|
1" |
33.4 |
3.38 |
2.50 |
|
1-1/4" |
42.2 |
3.56 |
3.39 |
|
1-1/2" |
48.3 |
3.68 |
4.05 |
|
2" |
60.3 |
3.91 |
5.44 |
|
2-1/2" |
73.0 |
5.16 |
8.63 |
|
3" |
88.9 |
5.49 |
11.29 |
|
4" |
114.3 |
6.02 |
16.07 |
|
6" |
168.3 |
7.11 |
28.26 |
|
8" |
219.1 |
8.18 |
42.55 |
|
10" |
273.1 |
9.27 |
60.29 |
Note: Weights are approximate and calculated based on carbon steel density of 7.85 g/cm³. Contact Amardeep Steel for exact weights per specific mill certificates.
For Schedule 40 steel pipe weights across other grades, or for Schedule 80 steel pipe dimensions, refer to our dedicated schedule pages.
ASTM A120 Equivalent Standards
|
Country / Region |
Equivalent Standard |
Standard Body |
Material Grade |
|
USA (Current) |
ASTM A53 Grade A |
ASTM International |
GR.A |
|
UK / EU |
BS EN 10255:2004 |
BSI / CEN |
S195T / S235T |
|
India |
IS 1239 Part 1 |
BIS |
— |
|
Germany |
DIN 2440 / DIN 2441 |
DIN |
St33 / St37 |
|
Japan |
JIS G3452 |
JISC |
SGP |
|
China |
GB/T 3091 |
SAC |
Q235A |
Types of ASTM A120 Pipe
- ASTM A120 Seamless Pipe: Manufactured without a weld seam; higher pressure rating. Used in High-pressure fluid conveyance, oil & gas
- ASTM A120 ERW Welded Pipe: Electric resistance welded; cost-effective for standard pressures. Used for Plumbing, fire sprinkler systems, water supply.
- ASTM A120 Black Steel Pipe: Bare (uncoated) carbon steel; as-rolled or painted. Used for Structural, mechanical, gas lines (indoors).
- ASTM A120 Galvanized Pipe:Hot-dip zinc coated for corrosion resistance. Used for Outdoor plumbing, water supply, scaffolding.
- ASTM A120 Schedule 40 Pipe: Standard wall thickness; most common specification. Used in Plumbing, fire protection, general industry.
- ASTM A120 Schedule 80 Pipe: Extra strong wall; higher pressure applications. Used in Industrial fluid lines, high-pressure systems.
- ASTM A120 Square / Rectangular Pipe: Non-circular cross-section; structural use. Used in Construction, framing, mechanical structures.
Those requiring seamless steel pipes for higher pressure ratings, orwelded / ERW steel pipes for standard plumbing systems, can view our full range of available pipe types.
Applications of ASTM A120 Carbon Steel Pipe
- Fire Protection Systems: ASTM A120 black and galvanized pipe is used in fire sprinkler and suppression systems for commercial, industrial, and residential buildings.
- Plumbing & Water Supply:Galvanized A120 pipe is used for potable water distribution, domestic plumbing lines, and general water conveyance in construction.
- Oil & Gas Transfer: Low-pressure gas and liquid transfer in refineries, petrochemical plants, and upstream oil & gas applications.
- Water Wells: Used as casing and conductor pipe in shallow to medium-depth water wells.
- Heat Exchangers & Condensers: Carbon steel A120 tubes are used as shell-side and tube-side components in industrial heat exchangers.
- Structural Applications: Hollow sections for light structural frameworks, fencing, and mechanical support structures.
- Agricultural Irrigation: Galvanized A120 pipe is used in irrigation systems for corrosion resistance in outdoor environments.
We Supply ASTM A120 Carbon Steel in listed cities in India
Mumbai, Lucknow, Coimbatore, Imphal, Mysore, Ratlam, Delhi, Kanpur, Darjeeling, Jalandhar, Nagpur, Solapur, Kolkata, Allahabad, Dehradun, Jammu, Nashik, Srinagar, Chennai, Ahmedabad, Faridabad, Jamshedpur, Bhadravati, Chattisgarh, Durgapur, Asansol, Hospet, Bellary, Visakhapatnam, Nellore, Surat, Bangalore, Chandigarh, Ghaziabad, Jhansi, Patna, Siliguri, Hyderabad, Stainless Steel Pipe dealers in Salem, Amritsar, Noida, Kochi (Cochin), Mangalore, Indore, Vadodra, Bhubaneswar, Bikaner, Bhavnagar, Tirupur, Ankleshwar, Warangal, Agartala, Thoothukudi, Stainless Steel Pipe suppliers in Pune, Thiruvanthapuram, Jaipur, Aizawl, Guwahati, Kozhikode, Raipur, Vishakhapatnam, Jabalpur, Bhopal, Gwalior, Ludhiana, Rajahmundry, Thane, Agra, Bhubaneshwar, Gurgaon, Madurai, Rajkot, Varanasi, Bhilai, Haridwar, Meerut, Ranchi, Ahmednagar, Akola, Amravati, Aurangabad, Baramati, Beed, Bhandara, Bhiwandi, Buldhana, Chandrapur, Chimur, Dahanu, Dhule, Dindori, Erandol, Gadchiroli, Hatkanangle, Hingoli, Ichalkaranji, Jalgaon, Jalna, Karad, Khed, Yavatmal, Kolaba, Kolhapur, Kopargaon, Latur, Malegaon, Mumbai, Nagpur, Nanded, Nandurbar, Nashik, Osmanabad, Pandharpur, Parbhani, Rajapur, Ramtek, Ratnagiri, Raver, Sangli, Satara, Shirdi, Shirur, Solapur, Thane, Wardha, Washim, Andhra Pradesh, Jammu and Kashmir, Nagaland, Uttarakhand, Haryana, Lakshadweep, Arunachal Pradesh, Jharkhand, Odisha, West Bengal, Himachal Pradesh, Assam, Karnataka, Punjab, Andaman and Nicobar Islands, Puducherry, Bihar, Kerala, Rajasthan, Chandigarh, Meghalaya, Chhattisgarh, Madhya Pradesh, Sikkim, Dadar and Nagar Haveli, Mizoram, Goa, Maharashtra, Tamil Nadu, Daman and Diu, Tripura, Gujarat, Manipur, Telangana, Delhi, Uttar Pradesh in India.
We Export ASTM A120 Carbon Steel in listed Country
United States of America, Malaysia, UAE, Indonesia, Saudi Arabia, Iran, Qatar, India, China, United Kingdom, Singapore, Canada, Thailand, South Korea, Turkey, Philippines, Egypt, Germany, Italy, Japan, Russia, Vietnam, Australia, South Africa, Portugal, Morocco, Costa Rica, Kazakhstan, Netherlands, Mexico, Brazil, France, Spain, Taiwan, Nigeria, Bangladesh, Kuwait, Iraq, Ukraine, Poland, Jordan, Romania, Oman, Hong Kong, Venezuela, Colombia, Norway, Chile, Trinidad & Tobago, Greece, Czechia, Belgium, Sri Lanka, Cyprus, Angola, Myanmar (Burma), United Kingdom, Canada, South Korea, Thailand, Netherlands, Spain, Turkey, Australia, Mexico, Pakistan, Vietnam, Brazil, Philippines, France, Taiwan, Poland, South Africa, Russia, Nigeria, Kuwait, Czechia, Norway, Romania, Egypt, Oman, Sweden, Belgium, Hong Kong, Israel, Colombia, Switzerland, Denmark, Finland, Argentina, Venezuela, Peru, Ukraine, Chile, Bangladesh, Portugal, Ireland, Austria, Algeria, Greece, Iraq, New Zealand, Slovakia, Hungary, Kazakhstan, Slovenia, Lithuania, Serbia, Sri Lanka, Bahrain, Bulgaria, Morocco, Tunisia, Croatia, Jordan, Ecuador, Trinidad & Tobago, Estonia, Azerbaijan, Ghana, Lebanon, Cyprus, Dominican Republic, Latvia, Libya, Costa Rica, Cambodia, Macedonia (FYROM), Belarus, Jamaica, Palestine, Turkmenistan
Frequently Asked Questions – Carbon Steel Pipes & Tubes
What is ASTM A120 pipe?
ASTM A120 is a standard specification for electric-resistance-welded (ERW) carbon steel pipe designed for conveying gas, water, and oil. It covers pipes with a maximum wall thickness of 3/8 inch and is manufactured using low-carbon steel in black or hot-dip galvanized finish. ASTM A120 pipes are widely used in fire protection systems, plumbing, water wells, and light structural applications.
What is the difference between ASTM A120 and ASTM A53?
ASTM A120 is an older, narrower specification limited to ERW pipe with a maximum wall thickness of 3/8 inch, primarily for low-pressure plumbing and fire protection. ASTM A53 is the current, broader standard covering both seamless and ERW welded pipe in Grades A and B, with higher mechanical requirements and broader pressure service ratings. A53 Grade B has a minimum tensile strength of 415 MPa (the same as ASTM A120 Grade A1), but ASTM A53 offers tighter dimensional tolerances and is accepted in more pressure piping applications. Where ASTM A120 was previously specified, ASTM A53 Grade A is now commonly used as the direct replacement.
What is the ASTM A120 equivalent standard?
ASTM A120 equivalent standards include BS EN 10255:2004 (formerly BS 1387) in the UK and Europe, IS 1239 Part 1 in India, DIN 2440 / DIN 2441 in Germany, and JIS G3452 in Japan. For international procurement, BS EN 10255:2004 is the most widely accepted equivalent specification.
What schedules is ASTM A120 pipe available in?
ASTM A120 carbon steel pipe is available in Schedule 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, STD (Standard), XS (Extra Strong), and XXS (Double Extra Strong). Schedule 40 is the most commonly specified for plumbing and fire protection applications.
What is the wall thickness of ASTM A120 Schedule 40 pipe?
ASTM A120 Schedule 40 wall thickness varies by nominal pipe size. Common values include 2.77 mm for 1/2" NPS, 3.38 mm for 1" NPS, 3.91 mm for 2" NPS, 5.49 mm for 3" NPS, 6.02 mm for 4" NPS, and 7.11 mm for 6" NPS. Refer to the dimensions table for the complete range.
Can ASTM A120 pipe be used in fire protection systems?
Yes. ASTM A120 pipe has traditionally been used for fire protection (sprinkler) systems and other low-pressure water conveyance applications. While modern projects may specify ASTM A795 or ASTM A53, ASTM A120 material meeting ASTM A53 Grade A properties is widely accepted for many fire protection applications.
What is the chemical composition of ASTM A120 Grade A1?
ASTM A120 Grade A1 has a maximum carbon content of 0.27%, maximum manganese of 0.93%, minimum silicon of 0.10%, maximum phosphorus of 0.035%, and maximum sulfur of 0.035%.
What are the mechanical properties of ASTM A120 pipe?
ASTM A120 Grade A1 has a minimum tensile strength of 415 MPa, minimum yield strength of 255 MPa, and minimum elongation of 30%, making it suitable for moderate-pressure fluid conveyance and general industrial applications.
What sizes does ASTM A120 pipe come in?
ASTM A120 pipe is available in sizes ranging from NPS 1/4" to NPS 30" (DN 8 to DN 750). Tube sizes are available from 6.35 mm OD to 101.60 mm OD, with custom sizes and cut lengths available on request.
Is ASTM A120 pipe available in galvanized finish?
Yes. ASTM A120 pipe is supplied in both black steel (as-rolled) and hot-dip galvanized (HDG) finishes. The galvanized zinc coating provides enhanced corrosion resistance for outdoor plumbing, water supply, and construction applications.
Can Amardeep Steel supply ASTM A120 pipe with MTC documentation?
Yes. Amardeep Steel Centre supplies ASTM A120 carbon steel pipes with EN 10204 3.1 Mill Test Certificates (MTC), IBR Form III-D certificates, and third-party inspection reports from agencies such as EIL and PDIL upon request.
Where is ASTM A120 pipe manufactured and what is the origin?
Amardeep Steel Centre stocks ASTM A120 pipes from multiple approved origins, including Indian manufacturers (Maharashtra Seamless, JSW), Japanese mills (JFE), Korean manufacturers (Hyundai Hysco, SEAH), European producers (ArcelorMittal, BENTELER, Butting Germany), and Ukrainian mills. Material origin can be specified according to project requirements.
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Get a Competitive Quote for ASTM A120 Carbon Steel Pipes & Tubes
Amardeep Steel Centre supplies ASTM A120 carbon steel pipes and tubes with complete documentation including EN 10204 3.1 MTC, IBR Form III-D, and third-party inspection on request. Ready stock available in Mumbai with worldwide export capability. We stock material from Indian, Japanese, Korean, and European mills.
