Rb3507 handrail / 环筋/扶手

Rb3506 Perforated bar w/ rabbets / 孔条（带拼接卡槽）

Rb3505 Perforated bar II / 孔条II

Rb3504 Perforated bar I / 孔条I

Rb3503 Hanging ladders / 爬梯/悬梯

Rb3502I IJN Railing II / JN栏杆II

Rb3501IJN Railing I / IJN栏杆I