Thepa e entsoe ka flange e tloaelehileng ea Amerika e pharaletsengLehlaseli la Hka tekanyo ea boholo ba ASTM A6. Sehlopha sa tšepe se ka khethoa pakeng tsa ASTM A572 GR50 /GR60, ASTM A992 kapa Q355. Galvanizing e chesang e fihlela maemo a ASTM A123, ISO1461 le AS/NZS4680. Ehlile, re boetse re thabetse ho fihlela maemo a mang a boleng le botenya bo fapaneng ba HDG bakeng sa bareki ba rona, kaha ke moetlo oa rona ho arabela kapele litlhoko tsa bareki le ho nka khato hang-hang. Lethathamo la nako e telele la k'hamphani la litlhaloso tse tloaelehileng tsa WF le hlahisa lithane tse 2000, ho fihlela litlhoko tse potlakileng tsa ho tlisa tsa moreki.