ASTM A53 Grade A Carbon Steel Pipes Manufacturer in India
ASTM A53 Grade A Carbon Steel Pipes Manufacturer in India
Sachiya Steel International is an ISO 9001:2015 and TÜV-certified ASTM A53 Grade A Carbon Steel Pipes Manufacturer in India, established in 2005. We supply seamless and ERW pipe in black and hot-dip galvanised finish, in sizes from ⅛ inch to 24 inches. Grade A is the softer, more formable grade of A53, chosen for water, steam, gas and air lines as well as structural and mechanical work. Every order comes with an EN 10204 3.1 mill test certificate.
Each length is tested to ASTM A53 and ASME SA53, with hydrostatic, tensile and bend or flattening checks tied to its heat number. Chemistry and dimensions are verified against the standard before dispatch. Pipe is supplied with plain ends, beveled ends or threaded ends with couplings, and we ship to buyers in 85+ countries. Send us your size, schedule and finish, and we will quote to your drawing.
What Are ASTM A53 Grade A Carbon Steel Pipes?
ASTM A53 Grade A Carbon Steel Pipes are widely used in industrial and construction applications. Manufacturers offer these pipes in seamless and welded options, with black or hot-dip galvanized finishes. Their carbon content of up to 0.25% makes them easier to bend, weld, and shape for different project requirements. Also known as ASME SA53 Grade A pipes, they provide a practical solution for general-purpose piping needs.
ASTM A53 Grade A Carbon Steel Pipes
High-quality ASTM A53 Grade A Carbon Steel Pipes manufactured for demanding industrial and engineering applications across oil & gas, chemical, petrochemical, power generation and construction. Available in multiple sizes, wall thicknesses, grades and manufacturing specifications.
Why Choose ASTM A53 Grade A Carbon Steel Pipes?
The first reason is versatility. A53 covers pipe for ordinary uses in steam, water, gas and air lines, and also for mechanical and structural work. One standard serves plumbing, plant utilities, fire lines, handrails and supports, so it is easy to source and widely understood.
The second reason is formability. Grade A is the softer of the two A53 grades, so it bends, coils and flanges with less risk of cracking. That helps fabricators who shape pipe on site or in a workshop.
The third reason is cost and choice. A53 is one of the most economical pipe standards, and it comes in seamless or welded form, in black or galvanised finish, and in sizes up to NPS 26. For lines that do not need hot-service A106 pipe, it gives dependable performance at a lower price. The limits are heat and corrosion: bare carbon steel rusts, and A53 is not the first choice for high-temperature service.
Types of ASTM A53 Grade A Carbon Steel Pipes
As an ASTM A53 Grade A Carbon Steel Pipe Manufacturer and Supplier, we offer a range of pipe types, finishes, and end connections to meet different industrial and construction requirements. Our product range includes seamless and welded pipes with various finishing options.
- Type S – Seamless Pipe: Manufactured without a weld seam, these pipes are suitable for general-purpose piping and applications requiring seamless construction.
- Type E – ERW Pipe: Produced using electric resistance welding, these pipes provide a practical solution for a wide range of piping applications.
- Type F – Furnace-Butt Welded Pipe: Manufactured through a furnace-butt welding process for applications permitted under the applicable ASTM A53 requirements.
- Black Pipe: Supplied with a black finish, these pipes can be painted or coated according to specific project requirements.
- Hot-Dip Galvanized Pipe: Coated with zinc to help protect against corrosion in suitable indoor and outdoor applications.
- Threaded and Coupled Pipe: Supplied with threaded ends and compatible couplings for easy installation using screwed connections.
- Beveled-End Pipe: Features prepared ends for butt welding, making it suitable for applications that require welded pipe joints.
We supply ASTM A53 Grade A Carbon Steel Pipes in different types and finishes to suit project specifications, installation requirements, and industrial applications.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
Pipes and Tubes
→
Seamless Pipes
→
ERW Pipes
→
LSAW Pipes
→
SSAW Pipes
→
Seamless Tubes
→
Welded Pipes
→
Welded Tubes
→
Box Pipes
→
Box Tubes
→
Brass Pipes
→
Heat Exchanger Tubes
→
Boiler Tubes
→
Aluminium Pipes
→
Carbon Steel Seamless Pipes
→
Carbon Steel Pipe
→
Stainless Steel Pipe
→
Alloy Steel Pipe
→
Duplex Steel Pipe
→
Super Duplex Steel Pipe
→
Nickel Alloy Pipe
→
Copper Nickel Alloy Pipe
→Get Certified ASTM A53 Grade A Carbon Steel Pipes at Competitive Factory Prices
ASTM A53 Grade A Carbon Steel Pipes Specifications
| Parameter | Details |
|---|---|
| Material | ASTM A53 Grade A / ASME SA53 Grade A / UNS K02504 |
| Pipe types | Type S seamless, Type E ERW, Type F on request |
| Pipe size | ⅛" NPS to 24" NPS, larger on request |
| Schedules | Sch 10, 20, 30, 40, 80, 160, STD, XS, XXS |
| Wall thickness | 1.65 mm to 40 mm |
| Length | Single random 4.8 to 6.7 m, double random from 10.7 m, cut length on request |
| Ends | Plain, beveled, threaded, threaded and coupled |
| Surface | Black oiled, hot-dip galvanised, varnished, primed |
| Tests | Hydrostatic, tensile, bend or flattening, chemical analysis |
| Extra tests on request | NDE, hardness, Charpy impact |
| Documents | EN 10204 3.1 mill certificate, inspection reports |
ASTM A53 Grade A Carbon Steel Pipes Standards
| Standard | What it covers |
|---|---|
| ASTM A53 / A53M | Black and hot-dip zinc-coated, welded and seamless steel pipe |
| ASME SA53 | The ASME version of A53 for pressure piping |
| ASME B36.10M | Dimensions of welded and seamless steel pipe |
| ASME B1.20.1 | Pipe threads |
| ASME B16.25 | Butt-welding end preparation |
| ASME B31.3 | Process piping |
| ASTM A795 | Black and hot-dip galvanised pipe for fire sprinkler systems |
| ASTM A106 | Seamless pipe for high-temperature service, the usual step up from A53 |
Material and Grades of ASTM A53 Grade A Carbon Steel Pipes
A53 has two grades, A and B, and three manufacturing types, F, E and S. The grade sets the strength, and the type sets how the pipe is made.
Grade A: Carbon up to 0.25% and manganese up to 0.95% for Types E and S. It is soft and easy to form, with a minimum tensile strength of 330 MPa.
Grade B: Carbon up to 0.30% and manganese up to 1.20%. It is stronger, with a minimum tensile strength of 415 MPa, and is the more common choice for pressure service.
Type S (seamless): Made from a solid billet with no weld seam. It is used where pressure and reliability matter most.
Type E (electric resistance welded): Formed from strip and welded, a cost-effective choice for general piping.
Type F (furnace-butt welded): Continuous welded pipe for light-duty service.
Grade A is available in Types F, E and S, while Grade B is available only in Types E and S.
ASTM A53 Grade A vs Grade B vs A106 Grade A: Which One Do You Need?
| Point | A53 Grade A | A53 Grade B | A106 Grade A |
|---|---|---|---|
| Manufacture | Seamless or welded | Seamless or welded | Seamless only |
| Carbon (max) | 0.25% | 0.30% | 0.25% |
| Manganese (max) | 0.95% | 1.20% | 0.93% |
| Tensile strength (min) | 330 MPa | 415 MPa | 330 MPa |
| Yield strength (min) | 205 MPa | 240 MPa | 205 MPa |
| Silicon | Not specified | Not specified | 0.10% min |
| Galvanised option | Covered by the standard | Covered by the standard | Not covered |
| Typical service | Ordinary uses: water, steam, gas, air | Pressure and mechanical use | High-temperature service |
Choose A53 Grade A for general piping where formability and cost matter most. Choose A53 Grade B for higher-strength pressure lines. Choose A106 Grade A when the pipe must be seamless and run hot.
ASTM A53 Grade A Carbon Steel Pipes Chemical Composition
| Element | Types S and E (%) | Type F (%) |
|---|---|---|
| Carbon (C) | 0.25 max | 0.30 max |
| Manganese (Mn) | 0.95 max | 1.20 max |
| Phosphorus (P) | 0.05 max | 0.05 max |
| Sulphur (S) | 0.045 max | 0.045 max |
| Copper (Cu) | 0.40 max | 0.40 max |
| Nickel (Ni) | 0.40 max | 0.40 max |
| Chromium (Cr) | 0.40 max | 0.40 max |
| Molybdenum (Mo) | 0.15 max | 0.15 max |
| Vanadium (V) | 0.08 max | 0.08 max |
| Iron (Fe) | Balance | Balance |
The total of copper, nickel, chromium, molybdenum and vanadium must not exceed 1.00%.
ASTM A53 Grade A Carbon Steel Pipes Mechanical Properties
| Property | Value |
|---|---|
| Tensile strength | 330 MPa min (48 ksi) |
| Yield strength | 205 MPa min (30 ksi) |
| Elongation | Set by the formula in the standard, based on wall thickness and strip width |
| Density | About 7.85 g/cm³ |
| Elastic modulus | About 200 GPa |
| Melting range | About 1450 – 1510°C |
| Magnetic response | Magnetic |
Pressure Capacity of ASTM A53 Grade A Carbon Steel Pipes
The table gives an indicative working pressure for seamless (Type S) pipe, using Barlow's formula P = 2 × S × t ÷ D, with an allowable stress S of 110 MPa (16 ksi, as used in ASME B31.3 at ambient temperature). It uses the nominal wall and no corrosion allowance. For ERW (Type E) pipe, B31.3 applies a joint factor of 0.85, and for furnace-butt welded (Type F) pipe, a joint factor of 0.60. Allowable stress falls as temperature rises, and mill tolerance also reduces capacity. Final design must follow ASME B31.3 for your service.
P is pressure, S is allowable stress, t is wall thickness and D is outside diameter. The values below are indicative only and must be verified against the applicable design code.
| NPS | OD (mm) | Sch 40 wall (mm) | Sch 40 pressure (bar) | Sch 80 wall (mm) | Sch 80 pressure (bar) |
|---|---|---|---|---|---|
| ½" | 21.3 | 2.77 | 286 | 3.73 | 385 |
| 1" | 33.4 | 3.38 | 223 | 4.55 | 300 |
| 2" | 60.3 | 3.91 | 143 | 5.54 | 202 |
| 4" | 114.3 | 6.02 | 116 | 8.56 | 165 |
| 8" | 219.1 | 8.18 | 82 | 12.70 | 128 |
ASTM A53 Grade A Carbon Steel Pipes Size and Weight Chart
Theoretical weight is (OD − Wall) × Wall × 0.02466, giving kg per metre with dimensions in mm. The weights shown are for plain-end black pipe. Galvanising adds a small amount, and threads and couplings add more.
OD and wall are in mm. Multiply the result by the pipe length to obtain the total weight.
| NPS | OD (mm) | Sch 10 wall (mm) | Sch 10 kg/m | Sch 40 wall (mm) | Sch 40 kg/m |
|---|---|---|---|---|---|
| 2½" | 73.0 | 3.05 | 5.26 | 5.16 | 8.63 |
| 3" | 88.9 | 3.05 | 6.46 | 5.49 | 11.29 |
| 4" | 114.3 | 3.05 | 8.37 | 6.02 | 16.07 |
| 6" | 168.3 | 3.40 | 13.83 | 7.11 | 28.26 |
| 8" | 219.1 | 3.76 | 19.97 | 8.18 | 42.55 |
| 10" | 273.1 | 4.19 | 27.79 | 9.27 | 60.31 |
| 12" | 323.9 | 4.57 | 35.99 | 10.31 | 79.73 |
| 14" | 355.6 | 6.35 | 54.69 | 11.13 | 94.55 |
| 16" | 406.4 | 6.35 | 62.64 | 12.70 | 123.30 |
| 18" | 457.2 | 6.35 | 70.60 | 14.27 | 155.87 |
| 20" | 508.0 | 6.35 | 78.55 | 15.09 | 183.42 |
| 24" | 609.6 | 6.35 | 94.46 | 17.48 | 255.24 |
ASTM A53 Grade A Carbon Steel Pipes Sizes, Dimensions and Schedules
A pipe is named by its nominal size, but its wall depends on the schedule. For sizes up to 10 inch, STD and Sch 40 have the same wall, and XS and Sch 80 match. On larger sizes they differ, as the table for 3 inch and 14 inch pipe shows. DN is the metric size for each NPS.
| Schedule | Wall at 3" / DN 80 (mm) | Wall at 14" / DN 350 (mm) | Typical use |
|---|---|---|---|
| Sch 10 | 3.05 | 6.35 | Light-duty, low-pressure lines |
| STD | 5.49 | 9.53 | Standard general piping |
| Sch 40 | 5.49 | 11.13 | Standard process and utility piping |
| XS | 7.62 | 12.70 | Higher-pressure lines |
| Sch 80 | 7.62 | 19.05 | Heavy duty and higher pressure |
Under ASTM A53, outside diameter is held within ±1% of the specified size, and wall thickness within −12.5%. Pipe is supplied in single random and double random lengths, and we cut and bevel to your drawing.
Testing and Inspection of ASTM A53 Grade A Carbon Steel Pipes
| Test | Purpose |
|---|---|
| Hydrostatic test | Every length is pressure tested to the A53 requirement to confirm it is leak tight |
| Tensile test | Confirms tensile strength and yield strength against the Grade A minimums |
| Bend or flattening test | Shows the pipe deforms without cracking, as the standard requires for the size and type |
| Weld seam check (Type E) | Confirms the weld is sound, using flattening and NDE as required |
| Chemical analysis | Checks carbon, manganese, phosphorus, sulphur and residuals |
| Zinc coating check (galvanised) | Confirms coating weight and adhesion |
| Dimensional check | Measures OD, wall, length, straightness and ovality |
| Visual inspection | Looks for scale, laps, seams, pits and dents |
Galvanised and Coated ASTM A53 Grade A Carbon Steel Pipes
| Finish | What it is | Where it is used |
|---|---|---|
| Black / mill finish | As-rolled surface with a light oil coat | Pipe to be painted or coated on site |
| Hot-dip galvanised | Zinc coating inside and out, to the A53 coating weight requirements | Water, outdoor and fire services |
| Varnish coating | Thin protective lacquer | Storage and shipping protection |
| Red oxide primer | Corrosion-protective primer | Pipe that will be painted later |
| Epoxy coating | Epoxy system for stronger protection | Wet and buried environments, on request |
Common Materials Supplied with ASTM A53 Grade A Carbon Steel Pipes
As ASTM A53 Grade A Carbon Steel Pipes Suppliers, we offer a range of complementary piping materials to meet different industrial and project requirements. Our product range includes carbon steel pipes, fittings, and flanges for various piping applications.
ASTM A53 Grade B Pipes: Suitable for applications requiring higher specified strength than Grade A.
ASTM A106 Grade A, B, and C Pipes: Seamless carbon steel pipes designed for high-temperature service.
API 5L Grade B to X70 Pipes: Used in oil and gas pipeline applications.
ASTM A333 Grade 6 Pipes: Designed for applications requiring suitable low-temperature toughness.
Carbon Steel Pipe Fittings: Elbows, tees, reducers, and couplings help connect pipes and create efficient piping systems.
Carbon Steel Flanges: Slip-on, weld-neck, and blind flanges provide connections between pipes, valves, and equipment.
We supply these materials in accordance with project requirements and applicable specifications, helping customers source compatible piping products for their industrial applications.
Applications of ASTM A53 Grade A Carbon Steel Pipes
- Water Supply and Distribution: Black and galvanised lines for potable and process water.
- Steam and Condensate: Low-pressure steam, hot water and condensate return lines.
- Compressed Air and Gas: Plant air, natural gas and utility gas lines.
- Fire Protection: Sprinkler, hydrant and standpipe systems.
- Oil and Gas Facilities: Utility, drain and low-pressure process lines.
- HVAC and Chilled Water: Heating, cooling and building services piping.
- Structural and Mechanical: Handrails, supports, frames, scaffolding and piling.
- Industrial Plants: General process, cooling water and utility piping.
Why Choose Us as Your ASTM A53 Grade A Carbon Steel Pipes Manufacturer in India?
With experience in the steel pipe industry since 2005, we manufacture and export carbon steel pipes for industrial, construction, and infrastructure projects. Our production capacity of 100 tons per month supports both domestic and international orders.
We offer ASTM A53 Grade A and Grade B pipes in seamless and ERW types, with sizes ranging from 1/8 inch to 24 inches, subject to specifications. Our product range also includes ASTM A106, API 5L, and ASTM A333 pipes, along with black and hot-dip galvanized finishes.
Quality and certification remain important parts of our manufacturing process. We hold ISO 9001:2015 and TÜV certifications and can provide EN 10204 Type 3.1 material test certificates, with Type 3.2 certification and third-party inspections available upon request, as applicable.
We export to more than 85+ countries, supporting international customers with export documentation, packing, and inspection coordination. As an ASTM A53 Grade A Carbon Steel Pipes Supplier in India, we also supply carbon steel fittings and flanges to meet different project requirements, helping customers source compatible piping products from one supplier.
Countries We Export ASTM A53 Grade A Carbon Steel Pipes To
We export to 85+ countries, serving oil and gas, power generation, petrochemical, chemical and construction industries.
Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait and Bahrain.
Europe: Germany, Italy, United Kingdom, Netherlands, France, Spain, Belgium and Poland.
Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan and Australia.
Americas: USA, Canada, Mexico, Brazil and Chile.
Africa: South Africa, Nigeria, Egypt and Kenya.
South Asia: Nepal, Bangladesh and Sri Lanka.
EN 10204 3.1 mill test certificates come with every order. EN 10204 3.2 certification and third-party inspection can be arranged on request. We pack each shipment to suit its route and destination, and we prepare the shipping and export documents your project requires, so international orders move cleanly from our plant to your site.
FAQs
Common questions about ASTM A53 Grade A carbon steel pipes, pipe types, finishes and supply.
How do Types F, E and S differ?
Type S is seamless, Type E is electric resistance welded, and Type F is furnace-butt welded. Type S suits pressure lines, Type E is the common general-purpose pipe, and Type F is for light duty.
Is A53 the same as A106?
No. A53 covers welded and seamless pipe for ordinary uses, including galvanised pipe. A106 covers seamless pipe for high-temperature service only. The chemistry is similar, but the standards differ.
Can A53 Grade A be used for steam lines?
Yes, for low-pressure steam and hot water within the limits of your code. For high-pressure or high-temperature steam, seamless A106 pipe is the usual choice.
Is Grade A good for bending and flanging?
Yes. Grade A is the softer grade, so it bends, coils and flanges more easily than Grade B.
How do I calculate the weight of A53 pipe?
Use (OD − Wall) × Wall × 0.02466, with both values in mm, to get kg per metre. Multiply by length for total weight.
Can the same pipe be dual certified?
Yes, where the chemistry and properties meet each standard. Pipe can often be certified to A53 Grade A together with API 5L Grade A. Tell us at enquiry.
Do you supply threaded and coupled pipe?
Yes. Threads follow ASME B1.20.1, and pipe can be supplied with couplings or with plain or beveled ends.
Which documents come with an order?
EN 10204 3.1 mill test certificates are included. Inspection reports and third-party certificates are available on request.
How is A53 pipe packed for export?
Pipes are bundled with end caps and strapped, with a protective coating applied where needed. Heat numbers are marked on each bundle for traceability.