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Zhangjiagang Sheng Ding Yuan group

[Province: Jiangsu ]

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Cold Drawn Hydraulic Steel Tubing , Precision Seamless Steel Pipe DIN2391

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Cold Drawn Hydraulic Steel Tubing , Precision Seamless Steel Pipe DIN2391

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Cold Drawn Hydraulic Steel Tubing , Precision Seamless Steel Pipe DIN2391

Speficification:

Size:OD4mm-60mm,TH0.5mm-7mm
Standard:/EN10305-4 /DIN2391/C
Material:ST35,ST37.4,ST37,ST45,ST52,ST52.4,E235,E255,E355,SAE1010,SAE1020.
Delivery State:NBK+ Black phosphated
Raw material:Bao Steel,Huai Steel,XingCheng Steel with good quality.
Length:5.8m,6m.
Package:Bundles or wooden cases,with caps on two ends.

Features:

Surface Anti-rust:good property of antirust,both outside and internal tube surface flushing with anti-rust oil.
Surface Color: Bright black color is homogeneously distributed on the tube surface.
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.
Mechanical properties:better extending rate and strength property,after bending with no deformation,after flattening and flaring process with no crack.
Raw material: Precision tubes are made from carbon steel from quality Bao Steel,XingCheng Steel,and HuaiSteel.

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.

Chemical Composition for Cold Drawn Hydraulic Steel Tubing

Chemical composition(cast analysis)^a

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