Products

British standard steel pipes
 BS 1387: 1967 Class
Light, Medium and Heavy		 Ordinary conveyance of gas, Water, general structure for civil engineering, steel towels or mining industry, etc.
Carbon steel Tubes for machine/general structure purchases JIS G3445 STKM 11A/13A/12B
JIS G3444 STK41
JIS G3444 STK51		 General structure for bicycles, automotive, steel fabrication frame, furniture, etc.
Square and rectangular structure tubing ASTM A500
JIS G3466 STKR		 For furniture, general structure for civil engineering, steel frame, etc.
Electrical Conduits BS 4568-1970 For electrical wiring



Testing & Inspection

Tokura maintains rigid quality control and assurance, various tests and inspection are carried out regularly at the factory. Some of these are:

  • Dimensional inspections (outside or inside diameter, wall thickness, length, weight, thread, etc.)
  • Flattening & Bending test.
  • Eddy Current Test. 1

Destructive Testing
Tensile Testing
Bend Testing
Eddy current testing Equipment

Aluminized Pipes JIS 3445-STKM 11A

Tokura's aluminized pipes material is a cold rolled steel with a hot dip aluminium silicon alloy of selected thickness coating.

Basically, this material is much superior in quality for exhaust applications and its life expectancy is multiple comparable to normal cold rolled steel pipes or hot rolled steel pipes.

The special features of aluminized pipes for exhaust applications are as follows:-

Heat Resistance

Due to is particular coating composition, aluminized materials has an excellent heat resistance. No alteration in the coating is observed up to 450°C at higher temperature, the formation of an iron/aluminium alloy gives the coating a greyish appearance. Can be used up to 600°C. Since this alloy layer has a high fusing point it will not melt even if exposed to a temperature above the fusing point of aluminium.

Mechanical Strength

The tensile strength is 30kg f/mm2 and elongation 34%, which is best suitable for bending, bulging, swaging and lock forming.

Reflectivity

Aluminized materials reflects the incident radiant heat. This property allows its use as an efficient thermal barrier or heat reflector in many high temperature applications.

Corrosion Resistance

Good corrosion resistance in auto exhaust system and industrial acid chemicals but less resistance to industrial alkaline chemicals.

Tokura produces aluminized pipes of outside diameter 12.7mm up to 101.6mm with various thickness. A special technique is applied to control the inner bead height which is made possible by our latest sophisticated machine. This is much advantage for bending, swaging, bulging, lock forming and very less wear and tear on toolings used.

 

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