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Rolf Engg. Solutions Inc.

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Hollow Section

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Manufacturer & Exporter of stainless steel round tube, stainless steel square tube & stainless steel rectangular tube. We have the distinction of being a pioneer in the manufacture, export and supply of quality hollow sections for domestic & International Market. The India based company manufactures using ultra-modern and environment friendly technology.
Rolf Engg. Solution Inc. has an advantage over other companies in the manufacturing of stainless steel shs and stainless steel rhs due to huge stock of stainless steel plates, sheets and coils. We can manufacture stainless steel square pipe and stainless steel rectangle pipe for architectural purpose with any kind of bends and designs.
The application of stainless steel structural tube is in Malls, Hospitals, Airport, Buildings and other structural areas. Reliable can manufacture stainless steel welded profiles with different shapes and laser cutting. It provides a value added service of stainless steel laser cutting on round, square and rectangle tubes.
Stainless Steel Square Section and Stainless Steel Rectangular section can be manufactured in different grades and sizes with a very wide range. 
Rolf is catering to the needs of its clients globally by manufacturing high quality stainless steel architectural tubes used for different applications. Reliable can make high radius curve bend in stainless steel square pipe and stainless steel rectangle pipe.

Rolf can manufacture ss square tube and ss rectangular tube from 2 mm to 50 mm thickness. It is the most competent in its industry in ss welded profiles due to the huge stock of sheets and coils.

Square Hollow Section

The stainless steel hollow sections are mainly used for various application viz constructions, architectural designs, food & pharmaceutical industries, offshore & marine industries, metro trains, railways, bus body building, other public transportation, process machineries, nuclear plants, etc.

We are an ISO 9001:2008 Certified company that follows total Quality Management System. With the focus on exports, we have been maintaining a balance between quality of our products and price acclaimed for innovation and market handling techniques.
Manufactured by using high-grade raw material and latest technology, our range is reckoned in the market for its durability and superior functionality. With the support of an experienced team of professionals and robust infrastructure, we are able to deliver our range in standard and customized specifications.

Conditions
The Tubes shall be Furnished in any of the following conditions as specified :
As welded
Welded and Annealed
Cold Reduced
Cold Reduced and Annealed
The inside diameter bead shall be furnished in any of the following conditions as specified :
Bead not removed
Bead controlled to 0.005 in (0.13 mm) or 15% of the specified wall thickness, whichever is greater,
Bead Removed
Square and Rectangular welded stainless tubing is supplied as cold worked unless otherwise specified.

 

SQUARE
WEIGHT (Kg/m)
H x B (mm)
1.2
1.5
2.0
3.0
4.0
5.0
6.0
8.0
10.0
12.0
20
20
0.729
0.901
1.176
             
25
25
0.921
1.140
1.495
2.167
           
30
30
1.112
1.379
1.814
2.645
           
32
32
1.189
1.475
1.941
2.837
           
35
35
1.304
1.618
2.133
3.124
           
38
38
1.418
1.762
2.324
3.411
           
40
40
1.495
1.858
2.452
3.602
4.703
         
45
45
 
2.097
2.771
4.081
5.341
         
50
50
 
2.336
3.090
4.559
5.979
7.349
       
60
60
 
2.814
3.728
5.516
7.255
8.943
10.582
     
70
70
   
4.366
6.413
8.531
10.538
12.496
     
75
75
   
4.685
6.952
9.169
11.336
13.453
     
80
80
   
5.004
7.430
9.807
12.133
14.410
     
90
90
   
5.641
8.387
11.083
13.728
16.324
     
100
100
   
6.279
9.344
12.359
15.323
18.237
23.916
   
120
120
     
11.258
14.910
18.513
22.065
29.020
   
140
140
     
13.172
17.462
21.703
25.893
34.123
   
150
150
     
14.129
18.738
23.298
27.807
36.675
45.343
 
200
200
     
16.913
25.118
31.272
37.376
49.434
61.292
72.950
220
220
       
27.670
34.462
41.204
54.538
67.672
80.605
250
250
         
39.247
46.946
62.194
72.241
92.089
300
300
         
47.221
56.515
74.953
93.190
111.227

 

The following dimensions are standard requirements, other thickness and dimensions can be made on request.
Following Grade is available for Hollow Section
A554 MT-301, A554 MT-302, A554 MT-304, A554 MT-304L, A554 MT-305, A554 MT-309S, A554 MT-309S-Cb, A554 MT-310S, A554 MT-316, A554 MT-316L, A554 MT-317, A554 MT-321, A554 MT-330, A554 MT-347, A554 MT-429, A554 MT-430, A554 MT-430-Ti

Send Enquiry

Recatangular Hollow Section

The stainless steel hollow sections are mainly used for various application viz constructions, architectural designs, food & pharmaceutical industries, offshore & marine industries, metro trains, railways, bus body building, other public transportation, process machineries, nuclear plants, etc.

We are an ISO 9001:2008 Certified company that follows total Quality Management System. With the focus on exports, we have been maintaining a balance between quality of our products and price acclaimed for innovation and market handling techniques.
Manufactured by using high-grade raw material and latest technology, our range is reckoned in the market for its durability and superior functionality. With the support of an experienced team of professionals and robust infrastructure, we are able to deliver our range in standard and customized specifications.

Conditions
The Tubes shall be Furnished in any of the following conditions as specified :
As welded
Welded and Annealed
Cold Reduced
Cold Reduced and Annealed
The inside diameter bead shall be furnished in any of the following conditions as specified :
Bead not removed
Bead controlled to 0.005 in (0.13 mm) or 15% of the specified wall thickness, whichever is greater,
Bead Removed
Square and Rectangular welded stainless tubing is supplied as cold worked unless otherwise specified.

 

RECTANGULAR
WEIGHT (Kg/m)
H x B (mm)
1.2
1.5
2.0
3.0
4.0
5.0
6.0
8.0
10.0
12.0
30
20
0.921
1.140
1.495
             
35
25
1.112
1.379
1.814
2.645
           
40
10
0.921
1.140
1.495
             
40
20
1.112
1.379
1.814
2.645
           
40
25
1.208
1.499
1.973
2.885
           
40
30
1.304
1.618
2.133
3.124
           
50
10
1.112
1.379
1.814
             
50
20
1.304
1.618
2.133
3.124
           
50
25
1.393
1.738
2.292
3.363
           
50
30
1.495
1.858
2.452
3.602
           
50
40
 
2.097
2.771
4.081
           
60
10
 
1.618
2.133
             
60
20
 
1.858
2.452
3.602
           
60
30
 
2.097
2.771
4.081
           
60
40
 
2.336
3.090
4.559
5.979
         
70
50
 
2.814
3.728
5.516
7.255
8.943
       
80
10
 
2.097
2.771
             
80
20
 
2.336
3.090
4.559
           
80
30
 
2.575
3.409
5.038
           
80
40
 
2.814
3.728
5.516
7.255
8.943
       
80
50
   
4.047
5.995
7.893
9.741
       
80
60
   
4.366
6.473
8.531
10.538
       
100
20
 
2.814
3.728
             
100
30
 
3.054
4.047
5.995
           
100
40
   
4.366
6.473
8.531
10.538
       
100
50
   
4.685
6.952
9.169
11.336
13.453
     
100
60
   
5.004
7.430
9.807
12.133
14.410
     
100
80
   
5.641
8.387
11.083
13.728
16.324
     
120
40
   
5.004
7.430
9.807
         
120
60
   
5.641
8.387
11.083
13.728
16.324
     
120
80
   
6.279
9.344
12.359
15.323
18.237
     
120
100
     
10.301
13.635
16.918
20.151
     
140
80
     
10.301
13.635
16.918
20.151
     
150
50
     
9.344
12.359
15.323
18.237
     
150
100
     
11.736
15.548
19.310
23.022
30.296
   
160
80
     
11.254
14.910
18.513
22.065
     
200
100
     
14.129
18.238
23.298
27.807
36.675
   
250
100
     
16.521
21.928
27.285
32.592
43.055
   
250
150
     
18.913
25.118
31.272
37.376
49.434
61.292
 
300
100
     
18.913
25.118
31.272
37.376
49.434
   
300
200
         
39.247
46.949
62.194
77.241
92.089
400
200
         
47.221
56.515
74.953
93.190
111.227

The following dimensions are standard requirements, other thickness and dimensions can be made on request.
Following Grade is available for Hollow Section
A554 MT-301, A554 MT-302, A554 MT-304, A554 MT-304L, A554 MT-305, A554 MT-309S, A554 MT-309S-Cb, A554 MT-310S, A554 MT-316, A554 MT-316L, A554 MT-317, A554 MT-321, A554 MT-330, A554 MT-347, A554 MT-429, A554 MT-430, A554 MT-430-Ti

Send Enquiry

Laser Cutting

Using laser cutting, you can boost your productivity of labour substantially when machining or cutting pipes/tubes and sections made of structural and rust-proof steel as well as of aluminium and its alloys.
This laser´s feed bin can hold 4 tons in bars/rods with length up to 6500 mm; the automatic feeder then feeds the laser cutter continually.

In no more than one operation, our laser is able to cut with pinpoint accuracy any hole into a pipe, tube or hollow angular section, to shape the front according to any contour you like or to adapt the finished product to the specified length.

In this way, you can substantially reduce the cost of production, as the following operations are superfluous: cutting, drilling/boring, milling, intermediate operation.

 

Further Advantages

  • High cutting accuracy – a 0.2 mm tolerance
  • Clean burless cut
  • Holes to be cut even through the profile edge (in case of hollow angular sections)
  • There are no tool costs at all (as compared with other technologies)
  • Intersection or interconnection of the same or different sections into the L, T, U, V, X or Y shapes
  • Effectiveness even in small lot orders and in the production of antetypes or samples/specimens
  • Possible optimization of products´ composition on each single bar with an eye to the minimum bar rest
  • In the field of rust-resistant materials, the laser technology is virtually the single one which allows the section units and space structures to be fabricated effectively.

 

Reducing and simplifying the subsequent operations, the laser technology is highly effective when cutting space tubular constructions. Due to utilizing quick couplers and connectors cut by laser, you need no more so many welding jigs; the subsequent space assembly is markedly facilitated by them.

Send Enquiry

Value Added Services

Cut to Length

Cutting to length means ready to assemble. It saves waste, transport costs, time and onsite resources. Our state-of-the-art cutting equipment is fast and precise – straight or angled.
Separately cut off-line, with a tolerance of ±1 mm and an angle tolerance of ±1 degree (also other tolerances possible). Length of the piece can be from 20 mm up to 9000 mm.

Advantages:
  • material costs >> no waste, no scrap
  • transport costs >> smarter logistics 
  • labour costs >> less work needed
  • equipment and tool costs >> less tools needed 
  • project time management >> assembly-ready component

Multiple Length

Optimize the length

What is the length you need? We can deliver the tubes in length that serves you best. By optimizing the original production length fitting the final length, you can also save in material costs (for example 2,5 m + 2,5m + 2,5 m =7,5 m). The delivery time for multiple lengths in line and standard 6 m tubes is usually the same.

Multiple lengths are cut with a tolerance of -0/+20 mm, possible lengths 
being from 4 000 mm up to 18 000 mm.

Laser Cutting

Cutting multipart tube sections with a tube laser saves time and reduces costs. The final product can be produced from the raw tube element by means of just one tool. No separate finishing stage is required. Tube lasering is extremely accurate with tolerances and also cost –effective.

Benefits of laser cutting in tube or profile cutting:
  • Tube or profile cross-section shape does not restrict applications
  • The system is also good for complex, multi-part elements and small-scale serial production
  • Parts can be integrated directly with the element
  • The number of works stages can be reduced, making the overall process faster
  • Excellent cutting quality results

Special Materials

Our wide range of stainless steel grades includes all standard austenitic grades. We are also able to deliver various stainless steel project materials such as duplex and ferritic grades, which are available by request with certain minimum quantities.

Examples:
  • EN 1.4539/AISI 904L
  • EN 1.4541/AISI 321
  • EN 1.4362/SAF 2304

 

350 hollow sections

Using our high strength class 350 hollow sections up to 100x100x6 mm, you can reduce wall thickness and save on weight and costs

Send Enquiry

Bend Pipes

Our products are used in a wide range of markets in India and overseas. As well as bending to customers specifications we stock a wide range of stainless steel, mild steel and aluminium butt weld bends, safety grab rails and swimming pool ladder rails. With over 37 years experience and expertise in forming tube & pipe, Reliable is committed to providing top quality, bent tube and box section in Stainless Steel, Mild Steel, CDS, T45, Aluminum.and on time service to our clients .

Mandrel Bending
Rolling
Swaging & Flaring
CNC Capability
One-off Bends to Multiples
Fast & Accurate
Quick turn-around
Stainless, Aluminium, Copper, Brass & Pipe

Tube size from 6mm to 114.3 mm OD can be manipulated on a variety of different centre line radii to accommodate differing wall thicknesses required by fabricators. 
Various areas of product design and fabrication have recognised the potential in utilising this specialist capability, including architectural designers, where the use of high-performance stainless tube matches many contemporary design visions.

A variety of methods can be used for bending stainless steel tubing. If the bend has a large radius, the tubing can be curved with three-roll benders (also called section benders, profile benders, or angle rolls.) If the bend has a tight radius, the tubing can be bent on a rotary-draw bender through a process called mandrel tube bending.

Both welded and seamless tubing can be curved. When the desired radius is very tight, seamless usually bends better

Send Enquiry

 

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