地板支撑横梁采用标准方管制成，配套横梁分为标准横梁、开口横梁、加长横梁;表面均镀锌防锈处理，镀锌层厚度满足8-12um要求。

Floor Stringer is made of standard square tubeand usuallydivided intostandardstringer,openingstringer andlengtheningstringer.Surface galvanized layer thickness is 8-12um.