Machubu achitsulo opanda msoko a ma boilers otsika komanso apakatikati (GB3087-2018) ndizitsulo zapamwamba za carbon structural zitsulo zotentha komanso zozizira (zozungulira) zopanda phokoso, zomwe zimagwiritsidwa ntchito popanga mapaipi otentha kwambiri, madzi otentha amadzimadzi amitundu yosiyanasiyana ya ma boilers otsika ndi apakatikati ndi mapaipi otentha kwambiri, mapaipi akuluakulu a utsi, mapaipi ang'onoang'ono a utsi ndi mapaipi a njerwa opangira magetsi oyendetsa galimoto.

Malekezero a chitoliro chachitsulo ayenera kukhala perpendicular kwa olamulira chitoliro zitsulo, ndi burrs ayenera kuchotsedwa.GB3087muyezo zitsulo chitoliro zambiri zopangidwa 10, 20 otentha adagulung'undisa kapena ozizira adagulung'undisa apamwamba mpweya structural zitsulo, nthawi zambiri amafunikira.madzi pressuree, crimping, kuyaka, kusalalandi mayeso ena kuti atsimikizire mtundu wa malonda ndi magwiridwe antchito.