Precision Stainless Steel Tubing ASTM A269 304L / 316L With Cold Drawn Seamless Type

Precision Stainless Steel Tubing  ASTM A269 304L / 316L With Cold Drawn Seamless Type

1 . Annealing of mother tuber ensures :

A) Removal of stress induced during tube forming and cold drawing

B) Sufficient ductility and softness for cold drawing

C) Transformation of the weld zone to austenitic nature

D) Re crystallization of metallic grains to original form and thereby improving corrosion resistance

2 . The tubes are then coated with proper lubricant and then cold drawn over a drew bench

1) To vary the metallurgical structure and restore the properties to the parent material
2) To achieve a tube having closer dimensional tolerances
3) To produce tubing of smaller size and wall thickness
4) To reorient the grain structure of weld portion with that of the parent material
5) To remove/minimize the internal bead

Test :

1 . NTD ( Ultrasonic test , Eddy Current test )

2 . Mechanical Test ( Tension Test , Flaring Test , Flattening Test , Hardness Test , Hydraulic test )

3 . Metal Test ( Metallographic Analysis , Impact Test-High / low temperature )

4 . Chemical Analysis ( Photoelectric Emission Spectroscopic )

Main Market :

MTSCO tubes main market include Europe , Middle East , Southeast Asia , South America etc .

Stainless steel seamless bright annealed tube’s final surface is polished and bright annealed . And the polished grade is includes 180# , 320# , 400# , 600# , 800# . According to standard very strictly , tubes which produced by us always have correct OD and WT tolerance . MTSCO has the most advanced technology — The floating plug drawing technology which are used in Korea , and equipped with the most environmentally process — Bright annealing process . So our bright annealed precision tube produce technology make us can produce 300 tons high precision tubes every months .