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RRT Pipe Making Co.,Ltd.

[Province: Tianjin ]

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Seamless Carbon Steel Hydraulic Tubing DIN2391/C ST37 For Hydraulic System

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Seamless Carbon Steel Hydraulic Tubing DIN2391/C ST37 For Hydraulic System

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Seamless Carbon Steel Hydraulic Tubing DIN2391/C ST37 For Hydraulic System

Specifications:

Size:OD:4mm-60mm,WT:0.5mm-7mm

Standard:DIN2391/C,EN10305-4

Material:ST35,ST37, ST37.4,ST44.4,ST52.4,E235,E355.

Delivery State:NBK+Black phosphate.

Length:5.8m,6m.

Package:Bundles or wooden cases.

Surface Anti-rust:Both outside and internal tube surface flushing with anti-rust oi.

Surface quality:very smooth and bright without oxide scale,pock,strach,crack and other defects.

Surface Cleaness:clean without iron scrap,dust,better for hydraulic system life.

Properties:better extending rate and strength property,after bending with no deformation,after flattening

and flaring process with no crack.

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

Description:

The steel grades of raw material used in our company are mainly ST35, ST37.4(10#), ST45 (20#), ST55 (35#), Ck45 (45#), ST52.4 (16Mn) etc. produced by Shanghai Baosteel Group.

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.

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.

Competitive Advantage:

Flattening test,Flaring test,tensile strength test,hydraulic pressure test are made for each batch of hydraulic tubing.

Internal surface with high cleaness and roughness.

We passed TS16949 certificate.

Main Customer:Contitech,Benteler.

We have to cooperate with Volkswagen.

We also have been reviewed by BMW.

Chemical composition(cast analysis)^a

Steel grade

% by mass

Steel name

Steel number