Black Phosphated Hydraulic Tube , DIN2391 ST37.4 Oil Delivery Bao Steel Pipe

Black Phosphated Hydraulic Tube , DIN2391 ST37.4 Oil Delivery Bao Steel Pipe 

Quick Detail:

Black phosphated steel tube for hydraulic fuel line

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.

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

No crack will occur after flaring and flattening for the industry, which the bending and forming is required in process.

Without oxidization, crack, fold, rolling fold, scar and laminar defect on the surface. The depth of defects (e.g. scratch mark, bulge and concavity) is not allowed to exceed 0.025mm (such requirement is stricter than DIN2391 standard).

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.

Specifications:

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

Standard:DIN2391,EN10305/4,DIN1630

Material: ST35,ST37.4,ST37,ST45,ST52,ST52.4, E215,E235,E355

Delivery State:NBK+Black phosphate.

Competitive Advantage:

We\'ve been through TS 16949 certificate

Our customer: Contitech,Benteler

We have to cooperate with Volkswagen

We also were reviewed by BMW

Quality is good.