This standard specifies common technical conditions of hydraulic system for mechanical equipments used in aspects of metallurgy, rolling, heavy forging and so on (hereinafter referred to as mechanical equipments). As for hydraulic systems (hereinafter referred to as system) for mechanical equipments above, corresponding technical requirements in design, fabrication and acceptance may be materialized and supplemented according to the principles of this standard in combination of the relevant standards.
This standard is applicable to mechanical equipments hydraulic system whose nominal pressure is not larger than 31.5 MPa.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For the dated references, the subsequent amendments to (excluding amending error in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For the undated references, the latest edition of the normative document is applicable to this standard.
Contents 1 Scope 2 Normative References 3 General Requirements 3.1 Basic Requirements 3.2 Design conditions 3.3 Safety Requirements 3.4 Energy conservation requirements 3.5 Working temperature 3.6 Pipeline flow rate 3.7 Noise 3.8 Selection basis 3.9 Cleanness control 3.10 Manufacture reference 3.11 Basic requirements for maintenance 3.12 Hoisting measure 3.13 Data for Installation, operation and maintenance 3.14 Acceptance data 3.15 Marking 3.16 Operating force 3.17 Tightening torque 4 Hydraulic oil (liquid) 5 Quality of casting, forging, welding and pipe fittings 6 Welding requirements 6.1 Basic requirements 6.2 Oil tank welding 6.3 Pipeline welding 7 Processing quality 8 External Leakage 9 Hydraulic action element 9.1 Hydraulic cylinder 9.2 Hydraulic motor 9.3 Installing base 10 System Equipment Assembly 10.1 Hydraulic pumping unit 10.2 Oil tank apparatus 10.3 Other Auxiliaries and Requirement 10.3.1 Heat Exchanger 10.3.2 Filter 10.3.3 Accumulators 10.3.4 Pressure Gauge 10.3.5 Sealing Member 10.4 Installation of Hydraulic Valve 10.5 Manifold Block 11 Pipeline 11.1 Fittings Material 11.2 Requirements for Fittings Tolerance 11.3 Pipeline installation shall conform to the following requirements 11.4 Laying in Ditch 11.5 Tube Bending 11.6 Hose 11.7 Fixings of Pipeline 11.8 Sampling Point of Pipeline 12 Wiring of Electrical Appliance 13 Controlling 13.1 Protective device of Circuit 13.2 Manual Overvide 13.3 Controlling on Valve 13.4 Installation Requirement of Control Device 13.5 Interrelationship of Circuit 13.6 Serve Control Circuit 13.7 Controlling Requirements on Hydraulic Pump Station 14 Flushing 15 Test 16 Coating 16.1 Basic Requirements 16.2 Tinting Requirement 17 Package, Transportation and Storage Annex A (Informative) Flushing Cleanliness Level Standard of Hydraulic Systems Assembly
