In the pipe market, many sellers call welded or hidden-seam pipes “Mannesmann”; in reality, only a few factories produce genuine seamless pipes.
If you look around the pipe market, you will probably hear several different brands all claiming to be “Mannesmann.” But the reality is that the number of factories actually producing seamless pipes is far smaller than most people imagine; knowing this helps you make the right purchase and gives your customer greater confidence in you.
Why the Name “Mannesmann” Has Become Misleading
In Iran’s market, in practice only two companies genuinely produce Mannesmann (seamless) pipes: Ahvaz Pipe and Rolling, which has been operating since around ۱۳۵۰ and produces Mannesmann pipes using specialized technology in sizes from ۰.۵ to ۷ اینچ, and Kaveh Iranian Group, which was the country’s first producer of Mannesmann pipes using the cold- and hot-drawing method. Other names heard in the market as Mannesmann products actually produce welded or hidden-seam pipes.

The name “Mannesmann” is heard in the market far more often than the number of genuine factories producing this product; distinguishing between the two builds customer trust.
How to Use This Knowledge in Sales
| Factory | Actual product type | Practical point |
|---|---|---|
| Ahvaz Pipe and Rolling | Genuine Mannesmann, sizes ۰.۵ to ۷ اینچ | Complies with ASTM, DIN, API and IPS standards |
| Kaveh Iranian | Genuine Mannesmann (cold and hot drawing) | The first producer of this method in Iran |
| Other “Mannesmann”-like brands | Usually welded or hidden-seam | Not suitable for high-pressure service, even if sold under the same name |
Why Honesty in This Matter Benefits You
If a customer needs a genuinely seamless pipe for high-pressure service, only these two sources provide a real guarantee. If the customer’s application involves lower pressure, a high-quality welded pipe from a reputable factory is a more honest and economical choice than selling it under the incorrect “Mannesmann” label.
This transparency may mean losing the sale of a more expensive product in the short term, but in the long term it creates a customer who trusts your recommendations.
Frequently Asked Questions
چند کارخانه واقعاً لولهٔ مانیسمان (بدون درز) در ایران تولید میکنند؟
عملاً دو مجموعهٔ اصلی: نورد و لوله اهواز (با سابقهای از حدود سال ۱۳۵۰) و گروه کاوه ایرانیان، که نخستین تولیدکنندهٔ لوله مانیسمان به روش کشش سرد و گرم در ایران بود. باقی نامهایی که در بازار بهعنوان «مانیسمان» شنیده میشوند، معمولاً لوله درزدار یا درزمخفی تولید میکنند.
چرا این موضوع برای فروش مهم است؟
چون اگر مشتری واقعاً به مشخصات فنی لوله بدوندرز نیاز دارد (مثلاً برای فشار بالا)، فروختن لوله درزدار بهجای آن با همان نام مانیسمان، هم غیرمنصفانه است و هم میتواند بعداً برای مشتری مشکل ایمنی ایجاد کند.
چطور بفهمیم لوله واقعاً مانیسمان است؟
نبود درز جوش قابلمشاهده روی سطح لوله و برچسب یا رولمارک کارخانهٔ واقعی تولیدکننده (نورد و لوله اهواز یا کاوه ایرانیان) بهترین راه تأیید است.
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