Heavy Mechanical General Techniques and Standards - Part 11: Attached Piping
1 Scope
This part of JB/T 5000 specifies technical and safety requirements of attached piping.
This Part is applicable to oil lubrication, grease lubrication, hydraulic, pneumatic and industrial water attached piping on heavy machinery principal part.
This Part is not applicable to attached piping for pressure vessels.
2 Normative References
The following standards contain provisions which, through reference in this Part of JB/T 5000, constitute provisions of this Part. For dated reference, subsequent amendments to (excluding corrigenda), 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 undated references, the latest edition of the normative document is applicable to this standard.
GB/T 3765-1983 Specification for bite type tube fittings
GB/T 7306.1 Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints are Made on the Threads - Part 1: Parallel Internal and Taper External Threads (GB/T 7306.1-2000 eqv ISO 7-1: 1994)
GB/T 7306.2 Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints are Made on the Threads - Part 2: Taper Internal and External Threads (GB/T 7306.2-2000, eqv ISO 7-1: 1994)
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads (GB/T 7307-2001, eqv ISO 228-1: 1994)
GB/T 12716 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads (GB/T 12716-2002, eqv ASME B 1.20.1: 1992)
GB/T 14383 Forged Steel Socket Welding Pipe Fittings
JB/T 5000.1 Heavy Mechanical General Techniques and Standards - Part 1: Check of Product
JB/T 5000.3 Heavy Mechanical General Techniques and Standards - Part 3: Welding
JB/T 5000.12 Heavy Mechanical General Techniques and Standards - Part 12: Paint
3 Technical Requirements in Attached Piping Fabrication
3.1 Inspection before attached piping of pipes and spare parts
3.1.1 Spare parts self-made in the manufacturer may be assembled upon passing the tests of the quality inspection department.
3.1.2 Outsourcing materials and spare parts shall meet the requirements of JB/T 5000.1.
3.1.3 Confirmation of pipe diameter, material and wall thickness
3.2 Pipes may be cut with saw or grinding wheel, but flame cutting. Verticality of the cross-section of cut pipes shall meet the requirements specified in Table 1.
Table 1
3.3 Before assembling, all pipes shall be removed from flash edge and burrs at pipe end, and arranged chamfer angle. Compressed air or other method may be used for removing sundries and floating rust on internal wall of pipe. Fabrication of stainless steel pipeline shall be separated from that of carbon steel pipeline, to prevent stainless steel pipeline being contaminated. For pipe blanking, enough allowance shall be reserved, in convenience of bending clamping and compensation adjustment.
3.4 Bending radius and tolerance of pipe
Contents
1 Scope
2 Normative References
3 Technical requirements in attached piping fabrication
4 Technical Requirements on Attached Piping Welding
5 Safety Requirements
Appendix A (Normative) Mounted Position and Method of Pipe Clamp
Appendix B (Normative) Drawing for Prefabricates for Attached Piping
