Kauv welded yeeb nkab: Nws yog tsim los ntawm dov qis carbon carbon structural steel los yog cov hlau tsis tshua muaj steel hlau sawb ntawm ib lub kaum sab xis helix (hu ua lub kaum sab xis) rau hauv lub raj khoob, thiab tom qab ntawd vuam cov yeeb nkab seams. Sawb steel ua cov kav dej loj. Nws cov lus qhia tshwj xeeb tau qhia los ntawm cov kab dav dav * phab ntsa tuab, thiab cov yeeb nkab welded yuav tsum xyuas kom meej tias qhov kev sim hydraulic, lub zog tensile ntawm cov vuam thiab qhov txias bending ua tau raws li qhov yuav tsum tau ua.
