分析了X80级钢的化学成分和金相组织。
It analyses the chemical composition and metallographic structure of grade X80 steel.
文章叙述了X80管线钢的化学成分、力学性能，并重点介绍了采用全自动焊和手工焊的焊接材料及焊接工艺。
This paper depicts the chemical composition, mechanical performance of X80 line pipes, giving emphasis to the welding materials and welding processes of fully automatic welding and manual welding.
文中重点介绍了镍系低温钢钢板、锻件和焊接材料的化学成分和力学性能。
It emphasizes the chemical compositions and mechanical properties of low temperature nickel steel plates, forgings and welding materials.
应用推荐