... :floor or wall frame 4three arms or four arms Concrete Placing BoomModel Number: HG32Brand Name: POTENTIALPlace of Origin: Hunan Province, ... ChinaProduct description:1. 3 hydraulic foldable booms.2. Our placing boom has captured the market share with good quality, competitive ... hose dimension (inside diameter × length) (×mm 5×3000Radius of placing boom (m)31.7 Stationary height (to the joint between ...