4140/SCM440/42CrMo4/42CrMo Hydraulic Cylinder Steel Tube honing pipe and skiving pipe

Standard: DIN2391, EN 10305, JIS G3445, ASTM A519, GB/T 8713…

Material: ST45, ST52, E355, E355SR, STKM13C, SAE 1026, 20#, Q235B, CK45…

Heat treatment: BK+S

Specification: Out diameter: 20-800mm, Inner diameter: 40-250mm

I.D Tolerance: H8-H9

Length: 1-12m(Customers usually choose the 4-5.8m)

Straightness: 1/1000

ID roughness: RA 0.4micron(max)

Technology: Honed & SRB( Skived and roller Burnished)

Scope: Honed tube for hydraulic cylinder, swivel crane, injection machine and construction machine application

Please feel free to contact us again if you have any further questions. We look forward to receiving an order from you.

 We, Shanghai Unite Steel are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china, such as: DAYE Special Steel-a famous steel enterprise with the longest steelmaking history; BAO Steel, and Dongbei Special Steel Group-the biggest special steel manufacturer; TPCO, VALIN-largest seamless steel tube production enterprise; What's more, we have built long, deep and close business relationship with dozens of steel companies, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!