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Chinese standard geological , water well drilling casing pipe tubes
we can supply many kinds of chinese standard geological, water well drilling casing pipe tubes, which are connected with casing coupling for both casing tube box threads.
Standard | Size | OD x W | I.D. | Material | Remark |
GB/T16950-1997 | 73 | Ø73x4.5 | Ø64 | DZ50 | Legnth and thread depends on customer's demands |
89 | Ø89x4.5 | Ø80 | DZ50 | ||
108 | Ø108x4.5 | Ø99 | DZ50 | ||
127 | Ø127x4.5 | Ø116 | DZ50 | ||
146 | Ø146x5 | Ø136 | DZ50 | ||
168 | Ø168x6.5 | Ø155 | DZ50 | ||
Notes: | |||||
Casing length: generally supplied with length 3.0m, 1.5m, 1.0m, 0.75m. | |||||
Any sepcial length is available by requests. |
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