ERW Tubes

  • Products
  • ERW Tubes
Manufacturing

Tubes manufacturing starts with selection of appropriate width of slitted coil as per required diameter. The slitted coil is prior tested for chemical and mechanical properties. The slit coil is loaded on the uncoiler, Then strip is accumulated in the accumulator, further the strip enters into forming section.

This is a group of four stand that gradually forms the strip. The strip passes through the group of three stands that finishes forming the strip into a round shape. The round shape tube is then welded by high frequency induction welder. Three rolls in the weld box generate forging pressure on the strip edges creating a strong structural bond.

An OD scarfing unit removes the OD weld seam, if required ID weld seam can be removed by ID scarfing unit. The tube passes through a coolant chamber, further sized by sizing rolls. An automatically cutoff unit cut the tubes as per preset length. The tubes are further dipped in rust preventive oil then packed and dispatched.

ERW Tubes Process
ERW Tube Size Chart

Technical Details

OD : Min. 12.70 mm to Max. 76.00 mm
Thickness : Min. 0.80 mm to Max. 4.50 mm

RAW MATERIAL SPECIFICATION
EQ. STD. INDUSTRY INDIAN
IS		 BRITISH
BS		 JAPANESE JIS GERMAN DIN AMERICAN
ASTM
Automobile Tubes IS 3074/1979 BS 6323/1982 JIS G 3445/1983 DIN 2393/1994
DIN 2394/1994		 ASTM A 513/1988
Shock Absorber Tubes IS 3074/1979 BS 6323/1982 P-6 JIS G 3445/1984 DIN 2393/1994 ASTM A 513/1988
Boiler Tubes IS 1914/1982 BS 3059/1987 JIS G 3461/1984 - ASTM A 513/1988
ASTM A 214/1988
Air Heater Tubes IS 3601/1984 BS 3059/1987 JIS G 3461/1984 DIN 1717 ASTM A 214/1988
Bicycle Tubes IS 2039/1981 BS 1717/1983 - - -
General Engg. Tubes IS 3601/1984 BS 6323/1982 JIS G 3445/1983 DIN 2393/1994
DIN 2394/1994		 -
Transformer Tubes IS 8036/1976 - - - -
Furniture Tubes IS 7138/1973 - JIS G 3445/1983 - -
Sectional Tubes IS 4923/1985 - JIS G 3466/1982 - ASTM A 500 Gr.A/1989
Structural Tubes IS 1161/1979 BS 4360 JIS G 3444/1982 - ASTM A 500 Gr.A/1989
End Application
BoiLer + -

Heat Exchanger

Boiler

Air Preheater

Gas Line