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Difference Between Seamless Pipes VS Welded Pipes?

What is the Difference Between Seamless Pipes and Welded Pipes?

Seamless steel pipe is manufactured by the round steel billet, between hot rolling, cold rolling or cold drawn processes, no seam on the pipe body.

Welded steel pipe is manufactured by flat steel plate, with welding seam on the pipe body. Including ERW pipe, LSAW pipe, SSAW pipe.

BMI describe you the differences between seamless pipe and welded pipe on raw material, manufacturing processes, performances, appearances, sizes, applications, cost prices etc.

Bhansali Metalloys Inc supply a good vary of Seamless Pipes & Tubes, which has a number of outstanding options like dependable, well tested, safe usage, durable, low maintenance, ranked material, etc. We provide these Welded pipes in form of grades and styles primarily based upon the industry specific requirements of the clients. Our Welded tubes are extensively used in varied industries and appreciated for their exclusive options like durability, strength and corrosion resistance. We also offer these Products in customized form with respect to its sizes and shapes to our clients.

API 5L / ASTM Seamless steel pipe and ERW Welded steel pipe have some differences as below:

1. Appearance difference:

Seamless steel pipe used steel billet as raw material. The outer surface defects of billet cannot be removed by hot rolling process, it is only polished after the product finished. In the process of wall reduction, the defect can only get partially terminated.

Welded steel pipe made by hot rolled coil as raw material, the surface quality of coil is just the pipe’s surface quality, and easy to control. The surface of hot rolled coil have high quality. So Welded steel pipe surface quality is much better than seamless steel pipe.

2. Molding process differences:

Seamless steel pipe can be formed one time in the rolling process.

Welded steel pipe is manufacturing with steel strip or steel plate, through bending and different welding processes.

3. Performance and Usage:

Seamless steel pipe has better pressure capacity, strength is higher than ERW welded steel pipe. So, it is widely applied in high pressure equipment, and thermal, boiler industries.

In General, the welding seam of the welded steel pipe is the weak point, the quality affect overall performance.

Generally, welded steel pipes can withhold 20% less working pressure than seamless ones. This safety is the prime factor why people go for seamless steel pipe. As a matter of fact, all the industrial pipelines are done with seamless pipes only because the pipes undergo extreme thermal, chemical and mechanical workloads. Welded pipes are more preferred in aerospace, automobile and electronics industries where the budget is comparatively low, and so is the work pressure put on the pipes.

4. Available Sizes differences:

We are seamless steel pipe manufacturers, and we produce original seamless pipe sizes maximum OD in 20-inch, 508 mm. Where normally is smaller than 16-inch, 406.4 mm, because of the equipment limits. And if client would like to purchase the seamless steel pipe more than above sizes, then hot expanding machining shall be used. But generally, this kind hot expanded seamless steel pipe quality could not compare with the original seamless steel pipe.

On the opposite, welded steel pipe don’t have these restriction, sizes available from 1-1/2 inch 48.3mm to 100 inch 2540 mm.

5. Cost and Prices:

Generally, the seamless steel pipe cost is higher than welded steel pipes, because the raw material, manufacturing equipment and processes. But sometimes by the market pressure, welded pipe is more costly, so if you met this situation, don’t wait to purchase the seamless steel pipe for the same dimensions.

Each Seamless and Welded Pipes & Tubes is otherwise designed based on the characteristics of the applying and additionally the pressure. Consequently, different industries use different Seamless and Welded Pipes. We also produce customized Industrial Seamless or Welded Pipes and Tubes at our factory as per our client’s requirements. For any types of Industrial Seamless and Welded Pipes & Tubes Price List Call on +91 9152160158 or drop an Email to |

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