Precision Tubes

Eddy Current/ Magnetic Flux Leakage
Ultrasonic (Weld Check)
Metallographic Examination
Chemical Analysis of Raw Material
 
Marking
 On pipe: paint-marking, die-stamping
On bundles: information tags
 
Packing
 Pipes will be delivered in bare or jute wrapped bundles & will
Fastened with sufficient number of steel Signode straps.
 
Mill Certificates
 Issued upon request according to EN 10204
2.1:2.2:3.1 (3.2 available on special request)
 
 
 
 
 
 

Field of Application
 Automotive: Shock absorber reserve & cylinder tubes,
engine parts, suspension bush, steering wheel, gear shift lever, window jack,
exhaust pipes, door impact bars, drive & universal shaft, tubes for car&bus seats,
luggage boot handle, chasis, buffer, axle, gas spring, bus body frames, etc.
Steel furniture: chairs, tables, bookshelves, trolleys, chase-lounge, wardrobes, frame for swings, perambulators.
Home appliance: vacuum cleaner, vibration damper.
Design elements: greenhouse tubing, bicycle frames,
Elliptic & flat-oval hollow sections for special accessories.
Other: Heating, mechanical engineering, building & textile machine industries.
 
Production Standards
 Welded Mechanical Tubing:
EN 10305-Part3, DIN 2394, BS 6323 Part 5, NFA 49-645,
UNI 7947, ASTM A 513
Draw Welded Tubes:
EN 10305-Part 2, DIN 2393, BS 6323 Part 6, NFA 49-341,
UNI 7946,
Drawn Seamless Tubes:
EN 10305-Part 1 , DIN 2391
 
Material Quality
 Uncoated Steel Strips:
E 155, E 420, E 195 acc. to EN 10027-1
St 37-2, St 44-2, St 52-3 acc. to DIN 17100
S 235 S 275 S 355 acc. to EN 10025
St 12, St 13, St 14 acc. to BS 6323
ASTM A 500 Gr A, Gr B, Gr C
Sendzimir or Hot-Dip Galvanised Strips:
EN 10240 / DN 17162, ASTM A 526 / 527
Special steel grades can be supplied upon request
 
Delivery Conditions
 BKM : Welded & sized, no heat treatment (+ CR1 / EN 10305-3)
BK : Cold finished (Hard), as drawn
BKW : Cold finished (Soft), lightly cold worked ( + CR2/ EN 10305-           3)
BKS : Cold finished & Stress relived
GBK : Annealed (+ A/ EN 10305-3)
NBK : Normalized (+ N / EN 10305-3)
 
Finishing Operations
 Plain End-Square cut or beveled
 
Tests Performed
 Black self colored / uncoated
Mill protective coating (oil, black varnish) on outside surface
Epoxy lining & coating              (AWWA C210)
3Layer PE Coating                   (DIN 30670, UNI 9099)
Bitumen Coating                      (DIN 30673, BS S 34)
Coal Tar Enamel Coating          (AWWA C 203)
 
Surface Protection
 Visual & Dimensional Inspection
Destructive Inspection : Tensile Test, Flattening Test, Expanding Test
Bending Test, Weld Ductility Test, Fracture Toughness Test, PE Peeling and
Impact Test, Hydrostatic Test,
Non Destructive Inspection:

Automotive: Shock absorber reserve & cylinder tubes,
engine