Steel Pipe DIN2391 Tubos Sin Costura Hydraulic Seamless Steel Tubes Galvanized

 Steel Pipe DIN2391 Tubos Sin Costura Hydraulic Seamless Steel Tubes Galvanized

Standard: DIN2391

Technique: Cold Drawn, Cold Rolled.

Size range: OD: 4-76mm, WT:0.5-8mm, Length: ≤12m, or at buyer's request.

Material: ST35,ST37.4,ST45,ST52.4 etc

Surface Customization: NBK, Galvanization/Galvanized/Zinc Coated, Blue White Zinc (Trivalent Chromium Passivation),

Plating Colour Zinc(Trivalent Chromium Passivation), Yellow, Army-Green, Phosphated/Black Phosphated.

Production Routing:Quality carbon steel from bao steel etc big mill, cold drawing the heat treatment without oxidization,

NBK condition. Do nondestructive testing ,HT tests and do dipping oil antirust protection, Packed tube in wooden boxes.

Delivery Condition: BK(+C), BKW(+LC), BKS(+SR), GBK(+A),NBK( +N)

What We Can Do in Our Testing Center:

Physis laboratory, Chemical spectrometer, Pressure blasting machine, Metallographic analysis, Salt Spray Test

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

Product Display of Hydraulic Seamless Steel Tubes