ZR repair and connection clamp concrete pump clamp couplings Product Description Technical Parameters: Note: Our company can customize standard or non-standard caliber product according to customer’s special requirements. If the demand for the product caliber is more than 500, please request references directly to the manufacturers. Factory &Warehouse Trade Shows Certifications Vicky Liu Web: www.dlzhjx.com/en/index.asp Skype:sihui.liu Whatsapp: 18742070473 No. 88 of Qingshan Industrial Park, Yongzheng Street, Jinzhou District of Dalian City, China