Cold Formed Special Welded Steel Tube , Seamless Carbon Structural Steel Square Tubing

Cold-Formed Welded and Seamless Carbon Structural Tubing in Rounds and Shapes

Size range:

Square tubes O.D. :20-20 to 500-500 W.T.:1-24mm L:max12000mm

Rectangle tubes O.D. :20-30 to 400-600 W.T.:1-24mm L:max12000mm

Applications: for construction of bridges, and buildings, and for general strcutrual purposes

QUALITY CONTROL

1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8~ Packing and Stocking.

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.