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SEAMLESS PIPES AND TUBES (SMLS) manufacturers & suppliers


Seamless pipe - pipe formed by passing hot steel through a die to get the shape of a pipe. Carbon steel seamless pipe are manufactured up to a range of 24-(600NB). Though this is the most expensive method due to the machinery and time involved in manufacturing, this is the most reliable method ever invented.

The main perceived advantage of seamless pipe is that they don’t have a weld seam. Traditionally, the seam of welded pipes has been viewed as a weak spot, vulnerable to failure and corrosion. Seamless pipe provide peace of mind. Although there should be no issues with the seams of welded pipes supplied by reputable manufacturers, seamless pipes prevent any possibility of a weak seam.

Seamless pipe have better ovality, or roundness, than welded pipes

Aesteiron Steel Pipes is a known between multinational suppliers as a leading supplier of seamless pipe and tubes of all grades and dimensions with more than 40 years of product and business expertise. In our stockyard, we stock seamless pipes up to 24'' in the high and low-temperature range. The pipes are according to ASTM and API in the complete schedule series & wall thickness. Thick wall XXS is also available in our stockyard. In addition we stock seamless pipe & tubes for structural application with high yield strength up to 1.000 ksi on stock. Through our worldwide network, we can also supply you from our ready stock or new production for the example with pipes according ASTM A 312, high temp austenitic pipes & tubes acc. ASTM B 407, or high nickel alloys seamless pipes, tubes & tubing in acc. to ASTM B165 or B622.


Oil and gas line pipe for intra-field pipelines is used to transport crude oil and natural gas from the field to oil refineries and storage facilities, as well as to shipment points and distribution nodes.


Seamless pipe manufacturing process

Steel pipes and tubes can be manufactured in different methods, the most selling methods are electric resistance welding (ERW), fusion welding (EFW), double submerged arc welding (DSAW) and seamless pipe manufacturing (SMLS).  The seamless pipe manufacturing process starts with the transformation of raw materials into steel bars. In different types of rolling mills steel bars are formed into a solid round shape, called billet, which is heated and pushed or pulled over a piercing rod producing a hollow tube or shell. Due to the heating production process seamless pipes are normalized and should have a consistent steel pattern throughout its range.

Seamless Line Pipe Finishing Process

Seamless Line Pipe Finishing Process

Seamless pipe sizes, wall thickness and dimensions

Seamless pipe are produced & finished in accordance with customer needs regarding dimensional and wall thickness specifications as well as heat treatment for more demanding applications. In general a seamless pipe is manufactured in sizes from 1/8” to 24” according to current standards API, ASTM, and ASME. There are more than 20 materials available in seamless pipe like API 5L Seamless Pipe, stainless steel, alloy steel, carbon steel, Inconel, Monel, Hastelloy, Duplex, Super Duplex, Api 5L, Incoloy, Mild Steel, 254 SMO, Titanium, Aluminum, Cupro Nickel, Brass, Copper etc. If required large dia seamless pipe for special projects we can also supply seamless pipe & tubes for bigger sizes starting from outside diameter 26” up to 48”.

Seamless pipe manufacturers

Seamless Pipe manufacturers

Maharashtra Seamless Limited (MSL)

MSL (Seamless Pipes)

Seamless pipe as the name suggests is a pipe without a seam or a weld-joint in contrast to Seam or Welded pipe. In a Seam or Welded pipe, the seam or the weld-joint is the weaker part of the pipe limiting the strength of the pipe to the strength of the weld-joint. Whereas the seamless pipe does not have any such joint and thus has uniform structure & strength all over the pipe body. Thus the seamless pipe can withstand higher pressure, higher temperature, higher mechanical stress & corrosive atmosphere and find wide applications in Oil & Gas, Refinery, Petrochemical, Chemical, Fertilizer, Power, Automotive, Bearing, Mechanical & Structural applications.

Seamless Pipe Manufacturer in India

Since the commissioning of its 1st seamless pipe mill in 1992 MSL has always been a market leader in India. In the subsequent years MSL added another two seamless mills to increase its volume and range. Even today MSL continues to maintain its leadership position as the largest manufacturers of seamless pipes in India with 3 mills and a total capacity of 5,50,000 M.Tons per year. MSL is also the only manufacturer in India to offer the maximum size range upto 20” catering to customers across all sectors. From the early years MSL has been exporting its products to the oil-fields of the US. Now MSL exports more than one-third of its volume to the markets of the US, Canada, Latin America, Europe, Africa & Asia.


MSL | MSL Seamless Pipe | MSL Seamless Tube


Plot No 30, Institutional Sector-44,
Gurgaon - 122001
Haryana (India)
Tel. : +91 124 2574325 / 26, 4624000
Fax : +91 124 2574327


Pipe Nagar, Village Sukeli,
N. H.-17, B. K. G. Road 
Distt. Raigad - 402 126, Maharashtra (India)
Tel. : +91 2194 238511 / 12 / 16
Fax : +91 2194 238513

2nd Floor, 5 Pusa Road, New Delhi-110 005

We also stock other grades of seamless pipe, please check the list of grades below:

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