目录简介 | Contents 1 General Provisions 2 Terms 3 Basic Requirements 4 Material Inspection 5 Pipeline Assembling ,Welding, Joint Coating and Inspection 6 General requirements of construction preparation 7 Crossing construction by Horizontal directional drilling 8 Crossing construction by pushing pipe 9 Crossing construction by Shield 10 Crossing construction by oper-cut excavating 11 Tunnel crossing construction by mine tunnelling method 12 Pipeline pigging and pressure test 13 Health, Safety and environment 14 engineering handover and acceptance preparation Explanation of Wording in this Cold |