The test results show the band structure distribution has great influence upon the strong toughness of welded pipeseam.
试验结果表明:带状组织的分布对焊缝强韧性影响较大。
2
Main products are series bolts, series anchor cables, pipeseam roof anchor series and all kinds of steel, W strips, trays, machinery installation and so on.
主导产品是新型锚杆系列、锚索系列、管缝式锚杆系列及各种顶板钢带、W钢带、托盘、和安装机具等。
3
But with the same length of straight seampipe than the weld length of 30 ~ 100%, and lower production rate.