GB 50424-2007 Code for construction of oil and gas transmission pipeline crossing engineering(Text of Document is in English) - Beijing translation compay

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