1.Type of thread:tubing NU/EU/IJ casing STC/BTC/LC 2.Grades:API J55;API K55;API N80;API L80 /P110 3.OD:Tubing1.05"~4 1/2"casing 4 1/2-13 3/8 4.WT:tubing 2.87~16.00mm casing 5.21-22.22 5 length:R1/R2/R3 6.Tubing is used to extracting petroleum and natural gas from a well Casing serves as wall of a well 7. Pipe end :thread with one side coupling and protected by the plastic hat
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