Casing pipes K55 Grade 9 5/8" BTC 36ppf  with couplings

  Henan Dongfanglong Machine Manufacture Co., Ltd. was established in 1999 , is located in Puyang, a city of  Central China, with a total area of  51,300 square meters ,including 16,000 square meters standard industrial factory , and 10100 square meters of buildings of office , R & D centers, showrooms, cafeteria and workers dormitory. The company has 66 sets of precision CNC lathes, heat treatment production line, 167 automatic painting and other auxiliary equipments, with the largest production area and automated production line of API couplings, the current annual output of couplings is up to 2 million pieces, and pup joints, crossovers, various petroleum down-hole tools can be 700,000 sets.Besides petroleum pipe accessories, our main products include precision CNC electromechanical integration equipmentand patented products which we researched and developed independently like spiral sand self-cleaning screens , oil foam breaking device , multi-stage cyclone efficient self-cleaning separator, screw- underground desilting, tubing centralizer , the overall rod stabilizer , automatic processing of the cylindrical collar stays top , intelligent current control injection device , cylindrical coupling automatic lathes. The company has 16 senior engineers, 37 engineers and technicians, forming a industrial chain of design, development , manufacturing , testing of experimental petroleum machinery products CNC automation equipment.