Comparison on Construction and Acceptance Criterion of Pipeline Route Engineering in Two Enterprise Criteria

A comparison on the construction and acceptance criterion of pipeline route engi neering in two enterprise criteria, QSY0401-98《Construction and Acceptance Crite rion of Oil & Gas Pipeline Route Engineering》and Q/SYXQ1-2001《Construction and Acceptance Criterion for West-to-East Natural Gas Transmission Pipeline Route E ngineering》, is made. The differences described in the paper includes construct ion preparation, materials handling, pipeline route reconnaissance, digging and backfill of trench, transportation of coated pipe, pipe stringing, bevel manufac turing, pipe alignment, pipeline pigging and pressure test, as well as pipeline dewatering, which is very useful to establish the standardization of pipeline con struction.