High-frequency welded round tube yog ib puag ncig lub raj ua los ntawm vuam cov ntaub ntawv hlau (tsuas yog cov hlau phaj) ua ke siv cov hluav taws xob tiv thaiv hluav taws xob ntawm high-frequency tam sim no, uas yog tom qab ntawd tsim rau hauv lub raj square. Tsis tas li ntawd, high-frequency welded round tubes tseem tuaj yeem hloov mus rau hauv cov raj square los ntawm "square pushing". "Square pushing" yog hais txog cov txheej txheem ntawm kev siv lub zog sizing kom ncaj lub raj steel rau hauv cov duab square.
High-frequency welded square tubes feem ntau hu ua square square tubes, square tubes, rectangular tubes, thiab lwm yam., muaj npe rau lawv cov square cross-section.
