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Tuff is a major player in manufacturing and supplying seamless carbon steel pipes, welded pipes, steam pipes, pipe fittings.

Stainless steel pipes- It is available in a variety of compositions, most popular of which are ASTM-A-213, Grade TD-321. (16% Cr, 8%N stabilized with titanium) and ASTM-A-213 Grade TD-347 (18% Cr, 8% Ni) stabilized with columbium. Either of these two may be used upt to 649oC. Care must be given to choice of welding rold to avoid brittleness in the welds. 

Seamless carbon steel pipes - A heated billet is brought into contact with tapered revolving rolls in such a way that the billed is pulled into the space allowed between the rolls. The mandrel is placed in the space. The soft centre of the billet makes it possible for the rolls to draw the billet over the mandrel, producing a hollow shell. When the billet has entirely passed over the mandrel, it is in the form of a thick walled seamless tube. The heavy walled tube is then passed to a rolling mill which reduces the tube to piping of proper outside diamter and wall thickness. Depending upon the process condition (temperature), seamless tube/pipes is termed as Hot Finish Seamless or cold drawn seamless as the term implies.

ERW - For pipes or tubes size 4 inch (10.2mm) OD and below, strip is fed into a set of forming rolls which consists of horizontal and vertical rollers so placed as to gradually from the flat strip in to a tube which is then allowed to pass the welding electrodes. The electrodes are copper disks connected to the secondary of a revolving transformer assembly. 

The copper disk electrodes make contact on each side of the seam and temperature is raised to the welding point. Outside flash is removed by a cutting tool as the tube leaves the electrodes, inside flash is removed either by an air hammer or by passing a mandnel through the welded tube after the tube has been cooled. This is termed as Electric Resistance welded or ERW tube/pipe. If this ERW is being drawn further to get desired size of tubes or pipes, in cold condition is called as Cold Drawn welded or CDW.

CARBON MOLLY STEEL - This is one type of alloy steel as per A-204 (EFW), A-335(Seamless, A-309) etc. was developed in past years when steam temp. were approaching but not reaching 538oC under which conditions carbon steel was both unsatifactory and economical. It has been found that there is a tendency for carbon molybdenum to show graphitization at temperatures in excess of 427oC. It is used in welded construction.

CARBON STEEL - Most frequently used as manufactured in area with ASTM specifications A-106 & A-S3. The chemical compositions of these two materials is identical, both are subjected to physical test, but those for A-106 are more rigorous. A-106 are made in grade A & B. Grade B has higher strength properties but is less ductile and for this reason Grade A is permitted only for cold or close coiling. Wehn carbon steel is intended for use in welded construction at temperatures in excess of 427oC and its use in welded construction above this value should be with caution.

Steel Pipe Fittings:

Stainless Steel / Carbon Steel /Alloy Steel Pipe Fittings - Stainless steel, Carbon Steel & Alloy Steel pipe fitting like Elbow, Bend, Stubend, Tee, Union, Reducer, Nipple,Flanges, etc. pipe fitting like Elbow, Bend, Stubend, Tee, Union, Reducer, Nipple,Flanges,etc S. S. Rods : Magnetic and Non-Magnetic (6mm to 300 mm dia) Squares, Hex Flange -150# 300# ANSI B 16.5, S/O, BLRF WNRF. Flats & Circles: as per your required size. Shims : 0.1 mm, 0.2mm, 0.3mm Thick and above.
and the Welding Electrodes like :

Stainless Steel Sheets And Plates:

All types of Stainless Steel Sheets & Plates are also supplies by us in a large stock from Size Range 10 to 30 SWG in Sheets and 4 mm to 50 mm in thickness in plates in any length as per your Requirement.

seamless carbon steel pipes, welded pipes, steam pipes, pipe fittings

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