ASTM A519 & ASME SA519 Pipes Manufacturer, Supplier & Exporter – ASC LLP
ASC LLP is one of the most trusted and experienced manufacturers, suppliers, and exporters of ASTM A519 & ASME SA519 Pipes. These pipes are known for their exceptional strength, durability, and performance in high-pressure and mechanical applications. We specialize in a wide range of alloy steel seamless pipes, including ASTM A519 4140 Alloy Steel Pipes, AISI 4140 Pipes, ASME SA 519 Grade 4130, and more.
Whether you are looking for heavy-duty mechanical tubing, precision engineering pipes, or boiler tubes, ASC LLP delivers the highest-quality products backed by global standards and certifications.
What are ASTM A519 & ASME SA519 Pipes?
ASTM A519 and ASME SA519 are specifications for seamless carbon and alloy steel mechanical tubing. These pipes are mostly used in mechanical engineering, structural applications, and pressure systems where high strength and toughness are essential.
- ASTM A519 is issued by ASTM International.
- ASME SA519 is its equivalent specification by the American Society of Mechanical Engineers (ASME).
These pipes can be produced using hot-finished or cold-finished methods depending on the required tolerance, strength, and finish.

Key Features of ASTM A519 & ASME SA519 Pipes
- High Strength & Durability
- Excellent Machinability
- Suitable for High-Pressure & High-Temperature Applications
- Seamless Finish for Smooth Flow
- Available in Multiple Grades like 1020, 1035, 4130, and 4140
- Custom Sizes Available on Request


Schedule & Size Chart – ASTM A519 / ASME SA519 Pipes
Nominal Pipe Size (NPS) | Outside Diameter (OD) (in/mm) | Schedule 40 (Wall Thickness in/mm) | Schedule 80 (Wall Thickness in/mm) |
1/4″ | 0.540 in / 13.72 mm | 0.088 in / 2.24 mm | 0.119 in / 3.02 mm |
1/2″ | 0.840 in / 21.34 mm | 0.109 in / 2.77 mm | 0.147 in / 3.73 mm |
1″ | 1.315 in / 33.40 mm | 0.133 in / 3.38 mm | 0.179 in / 4.55 mm |
2″ | 2.375 in / 60.33 mm | 0.154 in / 3.91 mm | 0.218 in / 5.54 mm |
4″ | 4.500 in / 114.30 mm | 0.237 in / 6.02 mm | 0.337 in / 8.56 mm |
6″ | 6.625 in / 168.28 mm | 0.280 in / 7.11 mm | 0.432 in / 10.97 mm |
8″ | 8.625 in / 219.08 mm | 0.322 in / 8.18 mm | 0.500 in / 12.70 mm |
10″ | 10.750 in / 273.05 mm | 0.365 in / 9.27 mm | 0.593 in / 15.06 mm |
Specifications Chart – ASME SA519 Grade 1035 Seamless Pipes
Specification | Details |
Standard | ASTM A519 / ASME SA519 |
Grades Available | 1020, 1035, 4130, 4140, 4145 |
Manufacturing Process | Seamless (Hot Finished or Cold Drawn) |
Pipe Type | Mechanical Tubing |
Outer Diameter Range | 6 mm to 630 mm |
Wall Thickness | 1 mm to 65 mm |
Length | Up to 12 meters (Random / Fixed / Custom) |
Form | Round, Square, Rectangular Tubes |
Ends | Plain End / Beveled End / Threaded |
Surface Finish | Bright, Annealed, Polished, Pickled |
Tolerance | As per ASTM A519 dimensional standards |
Mechanical Properties Chart of ASTM A519 Grade 1035 Pipes
Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HBW) |
1020 | 415 – 550 | 250 – 350 | 25 – 30 | 111 – 163 |
1035 | 585 – 755 | 320 – 460 | 15 – 20 | 140 – 187 |
4130 | 670 – 850 | 435 – 560 | 20 – 25 | 197 – 217 |
4140 | 750 – 1000 | 460 – 655 | 18 – 25 | 197 – 241 |
Chemical Composition Chart of AISI 4140 Seamless Pipes
Element | A519 Grade 1020 | A519 Grade 1035 | A519 Grade 4130 | A519 Grade 4140 |
Carbon (C) | 0.17 – 0.23 | 0.32 – 0.38 | 0.28 – 0.33 | 0.38 – 0.43 |
Manganese (Mn) | 0.30 – 0.60 | 0.60 – 0.90 | 0.40 – 0.60 | 0.75 – 1.00 |
Phosphorus (P) | ≤ 0.040 | ≤ 0.040 | ≤ 0.035 | ≤ 0.035 |
Sulfur (S) | ≤ 0.050 | ≤ 0.050 | ≤ 0.040 | ≤ 0.040 |
Chromium (Cr) | — | — | 0.80 – 1.10 | 0.80 – 1.10 |
Molybdenum (Mo) | — | — | 0.15 – 0.25 | 0.15 – 0.25 |
Physical Properties Chart of AISI 4140 Pipes
Property | Unit | 1020 | 1035 | 4130 | 4140 |
Density | g/cm³ | 7.87 | 7.87 | 7.85 | 7.85 |
Melting Point | °C | 1515 | 1515 | 1432 | 1416 |
Modulus of Elasticity | GPa | 205 | 205 | 205 | 205 |
Thermal Conductivity | W/m·K | 51.9 | 50.2 | 46.6 | 42.6 |
Electrical Resistivity | µΩ·cm | 15.0 | 16.0 | 24.5 | 25.0 |
Specific Heat | J/kg·K | 486 | 475 | 475 | 475 |
Poisson’s Ratio | — | 0.29 | 0.29 | 0.29 | 0.29 |
ASTM A519 & ASME SA519 Pipes – Product Range at ASC LLP
Grade | Material Type | Common Use |
A519 1020 | Low Carbon Steel | Automotive, Machinery |
A519 1035 | Medium Carbon Steel | Power Generation, Construction |
A519 / SA519 4130 | Chromium-Molybdenum Alloy Steel | Aerospace, Oil & Gas |
A519 / SA519 4140 | Chromium-Molybdenum Alloy Steel | Hydraulic Cylinders, Mining Equipment |
Why Choose ASC LLP for ASTM A519 & ASME SA519 Pipes?
At ASC LLP, we are more than just a supplier – we are your trusted partner for quality and reliability.
- ISO-certified manufacturing standards
- Expertise in alloy and carbon steel pipes
- Custom-cut sizes & finishes
- Fast shipping across the globe
- Competitive pricing & superior service
- Years of experience as Exporter of A519 4140 Pipe
Whether you need bulk orders for a mega project or custom dimensions for a small machine shop, ASC LLP can deliver exactly what you need – on time, every time.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our Top Notch quality ASTM A519 Carbon Steel Pipes. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
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