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        Rectangular Electrically Welded Pipes

        Short description
        The rectangular pipes are the key component in the powerful supporting and prefabricated structures being used in the heavy mechanical engineering.

        Rectangular Pipes GOST 8645-68. Rectangular Steel Pipes

        Sizes, mm Wall thickness, mm and limit deviations
        1 1.5 2 2.5 3 3.5 4 5 6 7 8 9 10
        A B Limit deviations Electrically welded pipes ± 10 %
              Seamless cold-deformed ± 12.5 %
              Weight per running meter, kg
          10   0.426 0.605                      
        20 15   0.505 0.723                      
          15   0.58 0.84                      
        25 28* ± 0.3 mm   1.15 1.48                    
          15   0.84 0.96 1.23 1.48 1.71                
        30 20   0.74 1.08 139 1.68 1.95                
          15     1.08 1.39                    
          20     1.19 1.55 1.88 2.19                
        35 25         2.07                  
          30*     1.43 1.86                    
          15         1.88                  
          20     1.31* 1.7 2.07 2.42                
        40 25     1.43* 1.86 2.27 2.66 3.02 3.36            
          28*     1.5 1.96 2.39                  
          30 ± 0.4 mm   1.55* 2.02 2.47 2.89 3.3 3.68            
          20         2.15 2.52 2.86 3.17            
        42 30         2.54 2.99 3.41 3.8            
          20       1.86 2.27 2.66 3.02 3.36            
        45 30       2.17 2.66 3.13 3.57 3.99            
          25     1.67* 2.17 2.66 3.13 3.57 3.99            
          30     1.78* 2.32 2.86 3.36 3.85 4.3            
        50 35     1.90* 2.49 3.09 3.6 4.12 4.62            
          40         3.25 3.83 4.39 4.93            
          20*       2.33                    
          25         3.05 3.6 4.12 4.62 5.55          
        60 30       3 3.25 3.83 4.39 4.93 5.94          
          40       2.96* 3.64* 43 4.94 5.56 6.73          
          30           4.3 4.94 5.56 6.73 7.8        
        70 40           4.78 5.49 6.19 7.51 8.75 9.89*      
          50           5.25 6.04 6.82 8.3 9.69        
          40           5.25 6.04 6.82 8.3 9.69 10.99      
        80 50           5.72 6.59 7.44            
          60             7.14 8.07 9.87 11.57 13.19      
          40             6.59 7.44 9.08 10.63 12.09      
        90 60 ±0.8%             8.7 10.65 12.51 14.29      
          40               8.07 9.87 11.57 13.19      
        0,1 50               8.7 10.65 12.51 14.29      
          70               9.96 12.22 14.4 16.48      
          40               9.33* 11.44 13.46 15.38 17.22    
        120 60                 13 15.34 17.58 19.73    
          80                 14.58 17.22 19.78 22.25    
          60                 14.58 17.22 19.78 22.25    
        140 80                 16.15 19.11 21.98 24.76    
          60*                     20.88      
        150 80                   20,05 23.08 26.01 28.86 31.62
          100                   21.93 25.28 28.53 31.69 34.76
        160* 130                       33.55    

        The pipes are manufactured electrically welded. The pipes are manufactured seamless.

        The pipes are manufactured electrically welded and seamless.

        1. Electrically welded pipes are manufactured of steels grade 08, 08кп, 08ю, 10, 10пc, 10кп, 15, 15кп, 15пc, Cт3пc, Cт3cп, Cт3кп.
        2. Seamless cold-deformed  pipes are manufactured of steels grades 10, 20, 35, 45, 09Г2C.
        3. Pipe random length is from 1.5 to 9.0 m, specified length from 5.0 to 9.0 m.
        4. Technical requirements as per GOST 13663/86.
        5. Seamless cold-deformed  pipes are manufactured heat-treated.
        6. The pipe sizes marked with an asterisk are manufactured on agreement.
        7. The pipes with the flange size over 80 mm and the wall thickness over 4 mm are delivered without straightening and end cropping.
        8. Electrically welded pipes are manufactured without heat treatment.
        9. The quality of weld joint is controlled with the help of nondestructive testers.
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        Interested in rectangular electrically welded pipes?
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