1. Cov yeeb nkab hauv tsev seamless muab raws li kev ua haujlwm ntawm lub tshuab, cov pa roj carbon zoo tib yam yog tsim raws li cov chav kawm A steel ntawm GB / T700-88 (tab sis yuav tsum xyuas kom meej tias cov ntsiab lus ntawm cov sulfur tsis tshaj {{2. }}.
2. Cov kav dej hauv tsev seamless muab raws li kev ntsuas hydraulic yuav tsum xyuas kom meej qhov ntsuas hydraulic tau teev tseg hauv tus qauv.
3. Kev tshuaj xyuas cov khoom ntiag tug ntawm cov kav dej seamless imported yuav tsum tau ua raws li cov qauv tsim nyog tau teev tseg hauv daim ntawv cog lus.
