Description

Technical Parameters

Seamless Hydraulic Tubing Technical Parameter

Material: ST52,CK45,4140,16Mn,42CrMo,E355,Stainless Steel 304/316,Duplex 2205,etc.

ID Size: 20mm – 1500mm

Length: max 16m

Type: Seamless, Hot Rolled, Cold Rolled, Cold Drawn

Straightness: ≤ 0.5/1000

Roughness: 0.2-0.4 u

Tolerance EXT: DIN2391, EN10305, GB/T 1619

Tolerance INT: H7,H8,H9

Protection: Anti-rust oil on inside and outside surface, plastic caps in both ends.

Packing: In bundles ties with steel strips and PE sheet or wooden case

Out Surface Treatment: Oil or vanished coated

Heat Treatment
Delivery Condition

Cold finished (hard) BK(+C)
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation
Cold finished (soft) BKW(+LC)
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding)
Cold finished and stress-relieved annealing BKS(+SR)
Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed GBK(+A)
The last Cold forming process is followed by annealing in a controlled atmosphere.
Normalized NBK(+N)
The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

Seamless Tube Tolerance

Chemical Composition

Seamless Tube Delivery Condition

Hydraulic Cylinder Tube Process

Why choose us?	·Any third-part inspection is accepted by we company.
	·Quick response in quotation, delivery, after-service.
	·Focus on pipe & tube solution for project application.

We supply good quality high precision seamless hydraulic tubing with material certificate. If interesting of our seamless tube please feel free to contact us.

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Round Seamless AISI 316 Stainless Steel Tubing