Chetan Steel stands out as a top manufacturer and supplier in Delhi, specializing in high-quality Carbon Steel Weld Neck Flanges designed for critical piping and pressure applications. With state-of-the-art machining facilities and rigorous quality control measures, the company ensures that its flanges meet ASTM, ASME, ANSI, and other international standards. Chetan Steel offers a variety of weld neck flanges in different sizes, pressure classes, and surface finishes to cater to a wide range of project needs. Serving sectors like oil and gas, petrochemicals, refineries, power generation, and construction, the company is recognized for its precision, durability, competitive pricing, and prompt delivery, making it a reliable partner for carbon steel flange solutions.
Carbon Steel Weld Neck Flanges are crafted from premium carbon steel, featuring a carefully controlled chemical composition that includes carbon, manganese, silicon, sulfur, and phosphorus. This well-balanced mix provides excellent strength, toughness, and weldability. On the mechanical side, weld neck flanges boast high tensile and yield strength, outstanding resistance to pressure and stress, and remarkable fatigue performance thanks to their long tapered hub. They ensure even stress distribution across the joint. Proper heat treatment further enhances the grain structure, dimensional stability, and long-term reliability in high-pressure and high-temperature service conditions.
| Steel Name | Steel Number | C max, % max. | Si max, % max. | Mn max, % max. | P max, % max. | S max, % max. |
| E155 | 1.0033 | 0,11 | 0.35 | 0.70 | 0.025 | 0.025 |
| E195 | 1.0034 | 0,15 | 0.35 | 0.70 | 0.025 | 0.025 |
| E235 | 1.0308 | 0,17 | 0.35 | 1.20 | 0.025 | 0.025 |
| E275 | 1.0225 | 0,21 | 0.35 | 1.40 | 0.025 | 0.025 |
| E355 | 1.0580 | 0,22 | 0.55 | 1.60 | 0.025 | 0.025 |
| Steel Name | Â Â Steel Grade | Cold Drawn /Â Hard | Cold Drawn /Â Soft | Â Â Cold Drawn & stress relieved | Â Â Annealed | Â Â Normalised | |||||||
| Rm, Mpa (N/mm2) |
A, % |
Rm, Mpa (N/mm2) |
A, % |
Rm, Mpa (N/mm2) | ReH, MPa (N/mm2) |
A, % |
Rm, Mpa (N/mm2) | A, % | Rm, Mpa (N/mm2) | ReH, MPa (N/mm2) |
A, % |
||
|
E155 |
1.0033 |
400 |
6 |
350 |
10 |
350 |
245 |
18 |
260 |
28 |
270 – 410 |
155 |
28 |
|
E195 |
1.0034 |
420 |
6 |
370 |
10 |
370 |
260 |
18 |
290 |
28 | 300 – 440 |
195 |
28 |
|
E235 |
1.0308 |
490 |
6 |
440 |
10 |
440 |
325 |
14 |
315 |
25 | 340 – 480 |
235 |
25 |
|
E275 |
1.0225 |
560 |
5 |
510 |
8 |
510 |
375 |
12 |
390 |
21 |
410 – 550 |
275 |
21 |
|
E355 |
1.0580 |
640 |
4 |
590 |
6 |
590 |
435 |
10 |
450 |
22 | 490 – 630 |
355 |
22 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chetan Steel is a leading manufacturer and distributor of high-quality EN10305-2 / EN10305-3 ERW Tubing in Delhi, India. We provide premium steel materials and a diverse range of products, including Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel. Our extensive inventory features Tubes, Pipes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Dedicated to fast delivery and exceptional customer service, we source top-grade raw materials to ensure superior precision, strength, and durability for demanding industrial applications. Contact us today for all your EN10305-2 / EN10305-3 ERW Tubing needs!
|
Hot rolled |
Outside Diameter, mm |
Tolerance, mm |
|
OD≤101.6 |
+0.4/-0.8 |
|
|
101.6＜OD≤177.8 |
+0.4/-1.2 |
|
|
Cold Drawn |
Outside Diameter, mm |
Tolerance, mm |
|
OD＜25.4 |
±0.10 |
|
|
25.4≤OD≤38.1 |
±0.15 |
|
|
38.1＜OD＜50.8 |
±0.20 |
|
|
50.8≤OD＜63.5 |
±0.25 |
|
|
63.5≤OD＜76.2 |
±0.30 |
|
|
76.2≤OD≤101.6 |
±0.38 |
|
|
101.6＜OD≤177.8 |
+0.38/-0.64 |
|
|
Hot rolled
|
Outside Diameter, mm |
Tolerance, % |
|
OD≤101.6, WT≤2.4 |
+40/-0 |
|
|
OD≤101.6, 2.4＜WT≤3.8 |
+35/-0 |
|
|
OD≤101.6, 3.8＜WT≤4.6 |
+33/-0 |
|
|
OD≤101.6, WT>4.6 |
+28/-0 |
|
|
OD>101.6, 2.4＜WT≤3.8 |
+35/-0 |
|
|
OD>101.6, 3.8＜WT≤4.6 |
+33/-0 |
|
|
OD>101.6, WT>4.6 |
+28/-0 |
|
|
Cold Drawn
|
Outside Diameter, mm |
Tolerance, % |
|
OD≤38.1 |
+20/-0 |
|
|
OD>38.1 |
+22/-0 |
Carbon Steel Weld Neck Flanges are extensively utilized in piping systems that function under high pressure, high temperature, and cyclic loading. They’re commonly found in oil and gas pipelines, refineries, petrochemical plants, and power generation facilities. These flanges are perfect for critical service lines, high-pressure steam systems, and process piping where safety and strength are paramount. Their tapered hub design effectively reduces stress concentration, making them well-suited for demanding service conditions.
Chetan Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Delhi, India.
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