4　材料及设备检验

• 4.1　一般规定

• 4.2　检验及处理

5　交接桩及测量放线

• 5.1　一般规定

• 5.2　交桩、移桩

• 5.3　测量放线

6　施工作业带清理及施工便道修筑

• 6.1　施工作业带清理

• 6.2　施工便道修筑

7　材料、防腐管的装卸、运输及保管

• 7.1　装卸

• 7.2　运输

• 7.3　保管

8　管沟开挖

• 8.1　管沟的几何尺寸

• 8.2　管沟开挖

• 8.3　管沟验收

9　布管及现场坡口加工

• 9.1　布管

• 9.2　现场坡口加工

10　管口组对、焊接及验收

• 10.1　一般规定

• 10.2　管口组对与焊接

• 10.3　焊缝的检验与验收

12　管道下沟及回填

• 12.1　管道下沟

• 12.2　管沟回填

13　管道穿越、跨越工程

• 13.1　管道穿越、跨越工程

• 13.2　穿越地下设施、管道、线缆

14　管道清管测径、试压及干燥

• 14.1　一般规定

• 14.2　清管、测径

• 14.3　水压试验

• 14.4　气压试验

• 14.5　输气管道干燥

16　管道附属工程

• 16.1　截断阀室及阀门安装

• 16.2　阴极保护工程

• 16.3　里程桩、转角桩、标志桩、锚固墩、警示牌安装及警示带敷设

• 16.4　线路保护构筑物

附录A　埋地管道弹性敷设的现场放线方法

• A.1　纵向弹性曲线放线

• A.2　水平弹性敷设放线

• A.3　管道弹性敷设

4 Checking of materials and fittings

• 4.1 General requirements

• 4.2 Checking and treatment

5 Pile transition route masurement and lineation

• 5.1 General requirements

• 5.2 Transition and movement of piles

• 5.3 Route masurement and lineation

6 Field cleanup and road constuction for work

• 6.1 Field cleanup

• 6.2 Road construction for work

7 Loading，unloading，transportaion and reserving of materals and coated pipes

• 7.1 Loading and unloading

• 7.2 Transprtation

• 7.3 Reserving

8 Pipeline ditch excavation

• 8.1 The dimensions of ditch

• 8.2 Ditch excavation

• 8.3 Ditch checking and acceptance

9 Pipe laying and field beveling

• 9.1 Pipe laying

• 9.2 Field beveling

10 Pipe assembling and welding inspection and acceptance

• 10.1 General requirements

• 10.2 Pipe assebling and welding

• 10.3 Welding inspection and acceptance

12 Pipeline layed down to ditch and backfill

• 12.1 Pipeline laid down to ditch

• 12.2 Ditch backfill

13 Pipeline crossing and over-crossing project

• 13.1 Pipeline crossing and over-crossing project

• 13.2 Crossing underground facilities pipeline cable

14 Pipeline cleanup，diameter masurement testing and drying

• 14.1 General requirements

• 14.2 Cleanup and diameter masurement

• 14.3 Hydraulic testing

• 14.4 Pneumatic Testing

• 14.5 Gas pipeline drying

16 Pipeline auxiliary project

• 16.1 Installation of valves room and valves

• 16.2 Cathodic protection project

• 16.3 Installation of milestone，piles corner，mark stakes，piles anchor blocks warning signs and warning tape

• 16.4 Pipeline protection structures

Appendix A Lineation mehtod of underground pipeline elastic pipe laying