Seamless Tube, Cold Drawn Seamless Stainless Steel Tube
Stainless Steel
Coils & Foils, Pipes & Tubes

Seamless Tube

Cold Drawn Seamless Stainless Steel Tube

Introduction and Scope This covers straight cold drawn seamless ferritic, austenitic alloy steel, boiler, superheater and heat exchanger tubes.

Materials Material is ordered to comply with the requirements of ASTMA – 213 in grades 304, 304L, 304H, 316, 316L, 321, 347, 410 & 430 grades regularly. Special grades can be made as per customer’s requirements.

 

Size Range

 

Process Of Manufacture The tube is manufactured from selected mother hollow pipes of required size and grade. These are manufactured by cold drawing process. All tubes are then annealed to a minimum temperature of 10500C, straightened, pickled and passivated, end finished and 100% tested in accordance with ASTM A 450.

Tolerances

OD Size Range Over MM Under MM
Under 25.4 0.10 0.10
25.4 to 38.1 Incl. 0.15 0.15
38.1 to 50.8 excl 0.20 0.20
50.8 to 63.5 excl 0.23 0.23
63.5 to 76.2 excl 0.30 0.30
76.2 to 101.6 excl 0.38 0.38

 

Test

 

Marking All pipes are marked as folows: Bhandari ASTM A-213, Garde, OD, Thickness, Heat No.

 

Standard Weight Chart for Cold Drawn Seamless Stainless Steel Tube

Sl no. Outside Dia Wall Thickness (in mm)
  Inch MM 0.5 0.6 0.7 0.8 0.9 1 1.2 1.5 1.6 2 2.5
1 1/4" 06.35 0.073 0.087 0.099 0.111 0.122 0.133 0.154        
2 3/8" 09.52 0.113 0.134 0.155 0.175 0.194 0.212 0.250        
    10.00 0.119 0.141 0.163 0.184 0.205 0.225 0.262        
4 1/2" 12.70 0.153 0.182 0.210 0.238 0.266 0.293 0.345        
5 5/8" 15.87 0.192 0.229 0.265 0.302 0.337 0.372 0.441 0.540      
6 3/4" 19.05 0.232 0.277 0.321 0.365 0.409 0.452 0.536 0.659      

* We also Manufacture Seamless Pipes from ½” to 4” NB SCH 5, SCH 10S, SCH 10, SCH 40S.

Due to variations between different specifications comparisons made exactly, physical, chemical and mechanical values are also typical and should not be taken as being accurate.