Product Description
Standard | ASTM A554, A249, A269 and A270, A312 |
Matrial | 201 ( Ni 1.2%), 202 (Ni 3.5%~4.5%), 301(Ni 5%), 304 (Ni 8%, Cr 18%), 316 (Ni 10%, Cr 18%), 316L (Ni10%~14%), 430 |
Size | OD: 0.5mm--8mm WT: 0.08mm - 2mm Length: According to Customer's Requirement |
Surface Finish | 180G, 320G, 400G Satin / Hairline 400G, 500G, 600G or 800G Mirror finish |
Test and Inspection | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT |
Application | Decoration construction, upholstery, industry instrument |
Tolerance
a) Outer Diameter: +/- 0.2mm
b) Thickness: +/- 0.02mm
c) Length: +/- 5mm
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.