The Similar Steel Tubes Material: EN1305-1 E215, DIN2391-2 St30Al,GB/T 3639 08Al.
Size Range: OD: 6-128mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m
Delivery Condition: +C, +LC, +SR, +A, +N
Application: For high precision purpose, auto industry, like manipulator, Shock Absorber, Break system tubing,
Chair tubing,hydraulic tubing.
We offered the Steel Tubes with Stable Quality with Comeptitive Price and high tolerance
+N(Bright Annealing) Heat Treatment, The steel tubing Surface is bright and smooth, without oxide scale
The Steel Tubes with Good Extending and Bending Ability.
The Tube Mill 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 or Cold Rolling, On line inspection
5. Heat Treatment:+SR, +A, +N
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.