Hi I hope you are doing well and staying safe from coivd-19. With this very moment, we would like to introduce our company specializes in the production of concrete pump pipes and accessories. Our products include Concrete pump pipe, pump parts, ST52 seamless pipe, Harden pipe, etc. Rigorously field tested through the toughest mixes before we sell it to ensure you are getting the best pipe on the market andAccessories! I can introduce to you for more details about it, Please reply to this email. Best regards Akemi Yin Haolong Construction Machinery Co., Ltd.