全硬螺杆用英语怎么说？

lyhardscrew

公司主要产品.氮化机筒双合金机筒.氮化螺杆、电镀螺杆PTA牙顶喷悍螺杆、不锈钢螺杆、全硬螺杆(HPTl.HPT2，HPT3耐磨耐腐蚀耐高温、耐高压)MainproductsNitrationBarrelBimetalIicBarrelNitrationscrewElectroplatescrew.PTAscrew.Stainlesssteelscrew[L{lyhardscrew(HPTl.HPT2.HPT3wear--proof.corrosionproof.heatproof，heat-proof.highpressureproofandhigh—speedproof)

fully hard screw rod

全硬螺杆
complete hard screw?

Through harden screw