Cold Drawn Bright Annealing Steel Tube

Unidus Tube Supply Co.,Ltd set up its plant which is engaged in manufacturing of Cold Drawn Seamless Bright Annealing Tubes.

• Outer Diameter: From 6.0 mm up to 75 mm.
• Wall Thickness: From 1 mm up to 7.5 mm.

• Hydraulic Tubes.
• High Pressure Diesel Fuel Injection Tubes.
• Tubes for General Engineering Applications.

• DIN 2391
• DIN 2445
• DIN 17175
• EN 10305-1 & EN10305-4
• EN 10216-2
• DIN 73000
• ISO 8535
• BS 980
• BS 3059
• IS 3601
• IS 3074
• SEE J 524
• SAE J 1958
• SA 179
• SA 210
• SA 334

Strict measures are taken to ensure Scale free and bright tubes with high degree of internal cleanliness. All the tests as per specifications are carried out stage wise to ensure that tubes meet desired specifications.

• Tensile Test
• Hydrostatic pressure Test.
• Eddy Current Test
• Flattening, Flaring, Bending Test
• Surface roughness Test
• Hardness Test
• Burst Test
• Salt spray Test to test Phosphating
• Chemical Composition
• Metallurgical & Stereo Microscopy
• Dimensional Checks

• Scale free bright tubes as annealed/normalized in bright annealing furnace under reducing atmosphere
• Tubes are manufactured out of fully Aluminum killed steel only to avoid problem of ageing which can lead to embrittlement & cracks.
• Surface roughness will be below 2 Microns Ra value for fuel injection Tubes
• Uniformly annealed soft tubes, suitable for proper ferrule biting.
• Reliable source of raw material.
• Tubes can be supplied with even closer dimensional tolerance than permitted by various codes/specifications, subject to prior agreement.
• Quality Assurance System as per ISO/TS 16949 for Automotive applications & ISO/9001 for Non-Automotive applications