Cold Drawing Seamless Steel Pipes

Product Name: Cold Drawing Seamless steel pipes

Material: ST35, ST45, ST52, E235, E355, E255, 4130, 1020, 1010, 1045, STKM11A, STKM13C, etc

Size Range: OD: 6-88mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m

Delivery Condition: BK, BKW, BKS, GBK, NBK

Application: For high precision purpose, auto industry, like manipulator, Shock Absorber, Transmission Shaft, Steering Gear, Car Frame, etc.

Stable Quality with Comeptitive Price.

NBK(Bright Annealing) Heat Treatment, Surface is clean and smooth, without oxide scale

Good Extending and Bending Ability.

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:BKS, GBK, NBK

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.