ASTM A335 Low Alloy Steel Seamless Pipe and AS Welded Pipe Supplier in India
Alloy Steel Pipes & Tubes are widely used in high-pressure and high-temperature services due to their excellent mechanical properties and superior resistance to wear, corrosion, and oxidation. These pipes are manufactured under various specifications such as ASTM A335 and ASME SA213, covering a wide range of grades including P5, P9, P11, P22, and P91.
Our range includes seamless, welded, ERW, EFW, cold drawn, cold finished, and hot finished alloy steel pipes and tubes. The outer diameter of seamless alloy pipes ranges from 6mm to 114.3mm, while welded and ERW types start from 10mm onwards. Wall thicknesses vary from 0.8mm to 4mm and lengths from 1 meter up to 12.5 meters, available in single random, double random, and custom cut-to-length options.
We offer various forms including round, square, rectangular, hydraulic, capillary, coiled, sanitary, sour service tubes, etc. The geometric precision of square and rectangular tubes provides additional structural strength, making them ideal for load-bearing and space-efficient designs.
Our Alloy Steel Boiler Tubes are specifically manufactured for demanding environments like boilers, reheaters, heaters, heat exchangers, and petrochemical installations, where they are used to transport hot fluids under extreme pressures and temperatures. These tubes comply with international quality standards like ASTM, ASME, DIN, EN, and are tested under stringent parameters to ensure durability and performance.
We are one of the trusted Alloy Steel Pipe & Tube Manufacturers in India, with a strong export presence in the Middle East, Asia, Europe, and America. Whether you're sourcing for power plants, refineries, pressure vessels, or chemical plants, we offer a reliable solution with unmatched quality.
Alloy Steel Pipes & Tubes Specification
| Parameter | Specification |
|---|---|
| Specifications | A335 / SA335 |
| Standard | DIN, ASTM, AISI, EN, JIS, GB, ASME |
| Grades |
ASTM A335 P5 Pipe, ASTM A335 P9 Pipe, ASTM A335 P11 Pipe, ASTM A335 P22 Pipe, ASTM A335 P91 Pipe |
| Type | Seamless, Fabricated, Welded, ERW, EFW, DOM, CDW, CEW Pipes |
| End | Plain End, Beveled End, Threaded |
| Schedule | Sch 5, Sch 10, Sch 40, Sch 80, Sch 80S, Sch 160, XXS, XS |
| Thickness | 0.3mm – 50mm |
| Outer Diameter | Up to 12” NB, 6.00mm to 250mm OD |
| Size Range | 5.0mm - 1219.2mm (Welded & Seamless) |
| Form | Round, Square, Rectangular, Coiled, Hydraulic, Hollow, Straight, “U” Shape, Capillary |
| Length | Single Random, Double Random, Cut Length |
| Finish | Annealed & Pickled, Polished, Bright & Annealed, Custom Finishes |
| Export To | Singapore, Thailand, Brazil, Indonesia, Korea, Egypt, India, Saudi Arabia, Ireland, Iran, Spain, Oman, Dubai, Ukraine, Canada, USA, Peru, and more |
Types of Pipes & Tubes
Explore our wide range of high-performance Pipes & Tubes manufactured in various grades and materials.
Seamless Pipes & Tubes
Seamless pipes offer superior strength and corrosion resistance, ideal for high-pressure and high-temperature applications.
Welded Pipes & Tubes
Cost-effective and durable, welded pipes are suitable for structural and low-pressure applications across various industries.
ERW Pipes & Tubes
ERW (Electric Resistance Welded) pipes are widely used for transportation of oil, gas, and water due to their precision and strength.
Electropolished Pipes
Electropolished pipes feature ultra-smooth surfaces for hygienic applications in the pharmaceutical, food, and biotech industries.
EFW Pipes
EFW (Electric Fusion Welded) pipes are preferred for large-diameter applications such as
offshore and structural pipelines.
Pipe Dimensions and Schedules
Pipes come in various sizes and schedules to accommodate the specific pressure requirements of the application. Below is a detailed table that outlines the dimensions for the most common pipe schedules:
Nominal Broe |
Outside Diameter |
Schedule 5S |
Schedule 10S |
Schedule 40S |
Schedule 80S |
Schedule 160S |
Schedule XXS |
|||||||
mm |
INCH |
mm |
Wt mm |
Weight (Kg/mt) |
Wt mm |
Weight (Kg/mt) |
Wt mm |
Weight (Kg/mt) |
Wt mm |
Weight (Kg/mt) |
Wt mm |
Weight (Kg/mt) |
Wt mm |
Weight (Kg/mt) |
3 |
1/8 |
10.3 |
1.24 |
0.276 |
1.24 |
028 |
1.73 |
0.37 |
2.41 |
0.47 |
- |
- |
- |
- |
6 |
1/4 |
13.7 |
1.24 |
0.390 |
1.65 |
049 |
2.24 |
0.631 |
3.02 |
.0.80 |
- |
- |
- |
- |
10 |
3/8 |
17.1 |
1.24 |
0.490 |
1.65 |
0.63 |
2.31 |
0.845 |
3.20 |
1.10 |
- |
- |
- |
- |
15 |
1/2 |
21.3 |
1.65 |
0.800 |
2.11 |
1.00 |
2.77 |
1.27 |
3.75 |
1.62 |
4.75 |
1.94 |
7.47 |
2.55 |
20 |
3/4 |
26.7 |
1.65 |
1.03 |
2.11 |
1.28 |
2.87 |
1.68 |
3.91 |
2.20 |
5.54 |
2.89 |
7.82 |
3.63 |
25 |
1 |
33.4 |
1.65 |
1.30 |
2.77 |
2.09 |
3.38 |
2.50 |
4.55 |
3.20 |
6.35 |
4.24 |
9.09 |
5.45 |
32 |
1.1/4 |
42.2 |
1.65 |
1.65 |
2.77 |
2.70 |
3.56 |
3.38 |
4.85 |
4.47 |
6.35 |
5.61 |
9.70 |
7.77 |
40 |
1.1/2 |
48.3 |
1.65 |
1.91 |
2.77 |
3.11 |
3.68 |
4.05 |
5.08 |
5.41 |
7.14 |
7.25 |
10.16 |
9.54 |
50 |
2 |
60.3 |
1.65 |
2.40 |
2.77 |
3.93 |
3.91 |
5.44 |
5.54 |
7.48 |
8.74 |
11.1 |
11.07 |
13.44 |
65 |
2.1/2 |
73.0 |
2.11 |
3.69 |
3.05 |
5.26 |
5.16 |
8.63 |
7.01 |
11.4 |
9.53 |
14.9 |
14.2 |
20.39 |
80 |
3 |
88.9 |
2.11 |
4.51 |
3.05 |
6.45 |
5.49 |
11.30 |
7.62 |
15.2 |
11.1 |
21.3 |
15.24 |
27.65 |
100 |
4 |
114.3 |
2.11 |
5.84 |
3.05 |
8.36 |
6.02 |
16.07 |
8.56 |
22.3 |
13.49 |
33.54 |
17.12 |
41.03 |
125 |
5 |
141.3 |
2.77 |
9.47 |
3.40 |
11.57 |
6.55 |
21.8 |
9.53 |
31.97 |
15.88 |
49.11 |
19.05 |
57.43 |
150 |
6 |
168.3 |
2.77 |
11.32 |
3.40 |
13.84 |
7.11 |
28.3 |
10.97 |
42.7 |
18.2 |
67.56 |
21.95 |
79.22 |
200 |
8 |
219.1 |
2.77 |
14.79 |
3.76 |
19.96 |
8.18 |
42.6 |
12.7 |
64.6 |
23.0 |
111.2 |
22.23 |
107.8 |
250 |
10 |
273.1 |
3.40 |
22.63 |
4.19 |
27.78 |
9.27 |
60.5 |
12.7 |
96.0 |
28.6 |
172.4 |
25.40 |
155.15 |
300 |
12 |
323.9 |
3.96 |
31.25 |
4.57 |
36.00 |
9.52 |
73.88 |
12.7 |
132.0 |
33.32 |
238.76 |
25.40 |
186.97 |
350 |
14 |
355.6 |
3.96 |
34.36 |
4.78 |
41.3 |
11.13 |
94.59 |
19.05 |
158.08 |
35.71 |
281.70 |
- |
- |
400 |
16 |
406.4 |
4.19 |
41.56 |
4.78 |
47.29 |
12.7 |
123.30 |
21.41 |
203.33 |
40.46 |
365.11 |
- |
- |
450 |
18 |
457.2 |
4.19 |
46.80 |
4.78 |
53.42 |
14.27 |
155.80 |
23.8 |
254.36 |
45.71 |
466.40 |
- |
- |
500 |
20 |
508.0 |
4.78 |
59.25 |
5.54 |
68.71 |
15.09 |
183.42 |
26.19 |
311.2 |
49.99 |
564.68 |
- |
- |
600 |
24 |
609.6 |
5.54 |
82.47 |
6.35 |
94.45 |
17.48 |
255.41 |
30.96 |
442.08 |
59.54 |
808.22 |
- |
- |
Features & Benefits
Our Alloy Steel Pipes & Tubes are designed for exceptional strength, durability, and performance in extreme environments. At Vardhman Steel Overseas, we provide top-quality solutions tailored to your industrial requirements.
- High Temperature Strength – Ideal for boilers, heaters, and high-heat environments.
- Pressure Resistance – Performs reliably under high-pressure applications.
- Excellent Creep Resistance – Suitable for long-term service in high-temperature areas.
- Superior Fabrication Capability – Easily machined, bent, and welded to meet custom specifications.
- Dimensional Accuracy – Maintains tight tolerances and consistent sizing for seamless installation.
- Multiple Grades Available – Includes ASTM A335 P5, P9, P11, P22, P91, and more.
- Corrosion & Oxidation Resistance – Performs well in petrochemical and power plant settings.
- Customizable Lengths & Ends – Supplied in single/double random or cut-to-length options with plain, beveled, or threaded ends.
- Meets Global Standards – Compliant with ASME, ASTM, DIN, JIS, and other international norms.
- Proven Long-Term Performance – Designed for durability and low maintenance in critical systems.