It presents the basic structure composition,main function and application of this system and usage effect of ERP quality control system on longitudinal ERW pipe manufacturer.

Study on FEM Simulation and Experiment of Cage Roll Forming of ERW Straight-welded Pipes;

In ERW steel pipe manufacture,incomplete strickle(rest weld)and complete strickle(internal strickle notch)two methods to treat the internal weld surface,but both of these two methods would affect comprehensive performance of ERW pipe.

Based on the analysis of the composition of the natural gas transported from piping,environment condition and the specific requirements of natural gas to ERW steel pipe,it is considered that in the design of town natural gas piping, the main process parameters shall be regulated so as to avoid extra quality requirements and invalid investment.

Optimization of multi-stage production planning in ERW pipe manufacturing;

,LTD,in which ERW pipe produced by Japan JFE company was applied,the conclusion can be reached that ERW pipe with superior quality will be obtained by means of preparing reasonable pipe specification,chosing steel pipe manufacturer with excellent equipment,.

Through the contrast between national ERW pipe application and detail case with foreign country,the article analyzes the difference of national ERW pipe quality and oversea and its causes.

This paper introduces the tack welding requirement and the tack welding equipment & procedure in the production of straight steel pipe.