Circular Hollow Sections (CHS)

Reliable Pipes & Tubes Ltd. (Tube Division) entering into the new horizon of stainless steel hollow sections square , rectangular and circular tubes with the latest technology, high proficiency and knowledge acquainted technicians having the production capacity of 6000 MT per annum.

Circular hollow sections, also known as round steel tubes, are a common type of steel section that is used in a variety of formats over various industries in India. 

These steel sections are rolled from steel sheet or slit coil. The slit strip of steel coil goes through a forming and sizing section in a normal cold forming steel mill. The mill consists of a number of passes through which the sheet is gradually formed, each pass bending the steel sheet more and changing the radii on each pass. This is done until the two ends of the steel is pressed together and then welded inline.

We are Stockist & Supplier or Exporter of Circular Hollow Sections in Worldwide.

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Hot Finish Circular Hollow Section
Mild Steel  (CHS) Circular Hollow Section

Round steel sections can be rolled from a variety of materials. Most common is hot and cold rolled steel tubes. Hot rolled sections are predominantly used for structural purposes while tubes rolled from cold rolled steel has better bending ability and gives a better aesthetic appearance after being powder coated. 

Steel sections can also be fin controlled and internally scarfed. A tube that is fin controlled means that the internal weld bead of the section has been controlled to an absolute minimum while a scarfed steel tube had the weld bead removed inline. This allows the tube to be suitable for mandrel bending. 

Drawn steel sections and precision drawn steel tubes plays a large part in the steel industry. Steel sections can be drawn from a standard available sized tube to a smaller sized steel section. With precision drawn tubes the inner diameter of the steel tube can be controlled using a mandrel while the outer diameter is drawn down through a die. 

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.

CIRCULAR
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

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.

We manufacture following grades :

301 Square Tube, 302 Square Tube, 304 Square Tube, 304L Square Tube, 305 Square Tube, 309S Square Tube, 309S-Cb Square Tube, 310S Square Tube, 316 Square Tube, 316L Square Tube, 317 Square Tube, 321 Square Tube, 330 Square Tube, 347 Square Tube, 429 Square Tube, 430 Square Tube, 430-Ti Square Tube.

301 Welded Section, 302 Welded Section, 304 Welded Section, 304L Welded Section, 305 Welded Section, 309S Welded Section, 309S-Cb Welded Section, 310S Welded Section, 316 Welded Section, 316L Welded Section, 317 Welded Section, 321 Welded Section, 330 Welded Section, 347 Welded Section, 429 Welded Section, 430 Welded Section, 430-Ti Welded Section.