Drilling of oil and gas wells and transportation of oil and gas, main products include:casing，tubing，drill pipe and line pipe.
(1)Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore.size:OD: 4 1/2’’ ~ 20’’ (114.3mm ~ 508mm)；WT: 0.205’’ ~ 0.635’’ (5.21mm ~ 16.13mm)；LENGTH: R1, R2, R3
(2)Tubing:The tubing is a pipeline that transports crude oil and natural gas from the oil and gas layer to the surface after drilling is completed. It is used to withstand the pressure generated during the mining process.Used for the Transmission of Oil & Gas
(3)Drill pipe:Oil drilling pipes are made by geological drilling steel by hot rolling or cold drawing. Grade: E75, X95, G105, S135. Mainly used for oil and gas exploitation.
(4)Line pipe:Out Diameter: 2 3/8″ – 4 1/2″ (60.3mm-114.30mm)； Wall Thickness: 0. 205″- 0.635″ ；Length: R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.36mtr or longer);grade:API5L,ASTM A106/A53
