... .Short Delivery Time 4.Competitive price hydraulic pressure cylinder tube 1.Standard: DIN2391,DIN2445,EN10305,GB/T 3639,GB 87132.Material: 10#,20 ... cold rolled precision seamless steel pipes are mainly used for hydraulic pressure and pneumatic services, auto pipe, oil cylinder pipe, motorcycle shock ... .4-0.8μmSRB50-250≤9MH80.1-0.4μm hydraulic pressure cylinder tube