Langfang Rongtong was founded in 1993 established in 1996, focusing on manufacturing heavy equipments specialised for oil and gas industry pipeline constructions. Our company integrates design, development, production, sales and after-sales services and is committed to serve our customers with the best quality machinery as well as good services. 24/7 after-sales services provided to resolve all unexpected situations for our customers. Main product : Pipelayers, Welding Tractors, Pipeline Anti-corrosion Series Vehicles, Pipe Carrier, Crawler Traction Conveyor, Internal & External Hydraulic Aligning Device, Roll-cradles, Crawler crane, Excavator, etc. In recent years, Rongtong has obtained ISO9001 authentication of quality, CNPC supplier certificate, SINOPEC internet-supplier certificate of the equipment procurement as well as obtained the independent import and export qualification. Rongtong has been rated as China's top 500 integrity Enterprises, excellent credit enterprises of Hebei Province and was listed as model units for China's product quality and credit protection.