Round Black Phosphated Hydraulic Steel Tube , DIN1630 ST37.4 ST44.4 ST52.4

Quick Detail:

DIN1630 steel tubing ST37.4 OD14x1.5x4000

Raw material:Bao Steel,Huai Steel,XingCheng Steel with good quality.

No deformation after cold bending,no crack after flaring and flattening.

Description:

Synopsis of Process Routing: Cold drawn and bright NBK seamless steel tube is used as the tube to be phosphated. The phosphated is realized with the imported chemical fluid to form a black film. The antirust oil is absorbed by means of the micro pore on the film to prevent from the rust. The caps are covered at two ends of tube to prevent from the dust.

Internal Surface quality Control:We adopt automatic inner surface cleaning machine, rotating brush cleaning and high pressure oil flushing to clean the inner and outer surface.The new steel tube production craftsmanship can effectively remove all particulate attached to the inner and outer surface of tubes and thus achieving the utmost surface cleaness and polishness.

Main Features: color of steel tube: bright black. Color is homogeneously distributed on the tube surface. The tube has good property of antirust.

Applications:

Used in hydraulic system,including automotive Hydraulic power steering system, the clutch system, braking system, engine high pressure oil pipe, excavator hydraulic oil pipe,nested card connector (pipe joints) with matching,shippment industry.

Specifications:

Size:OD4mm-60mm,TH0.5mm-7mm

Standard:DIN1630

Material: ST37.4,ST44.4,ST52.4

Delivery State:NBK+Black phosphate.

Competitive Advantage:

Internal surface with high cleaness and roughness.