Weldability of WT-62CF steel both for inland and for plateau uses are proved from experiments. The reliable welding procedure and QA measures are drawn up.
论证了WT-62 CF钢在内地和高原现场的焊接性，制定了可靠的焊接工艺及质量保证措施。
2
The second refining is the new advanced technology of iron and steel industry inland and abroad.
钢水炉外精炼是当前国内外炼钢工业的前沿新技术。
3
Hydraulic lifting upside-down method is advanced for the internal steel stacks' installation, and it was firstly invented inland.