large span multi plate culvert
multi plate culvet 1, assembled by structural plate by bolt and nuts 2, hot galvanized
multi plate culvet1, assembled by structural plate by bolt and nuts2, hot galvanized
large span multi plate culvert
multi plate culvet 1, assembled by structural plate by bolt and nuts 2, hot galvanized
multi plate culvet1, assembled by structural plate by bolt and nuts2, hot galvanized
large span multi plate culvert