13-3/8 coupling shall be machined from the coupling blank,and made from the coupling material ,coupling stocks or hot forging.
1. O. D: 1.315”-4-1/2”"
2. Grade: J55 K55 N80 P110 ect
3. Thread: NUE, EUE, STC
4. Standard: API 5CT
5. API 5CT Specs 4" tubing coupling with BTC Thread
API 5CT Specs 4-1/2~20" tubing coupling with BTC Thread
1. Grade: J55, K55, N80-1, N80-Q, L80, C90, P110
2. We also supply premium thread products by customer's request
3. Type: NU, EU(tubing coupling), STC, LC, BTC(casing coupling).
Standard Steel Frame
Within 15 working days
EXW,CFR,CIF By air, By sea
As a professional manufacturer, we provide follow services:
2.ONE year warranty and life time maintenance
3.In time delivery.
4.High Quality assurance..
1.Full-set quality control
2.Strict quality inspection
5.As international standard
6.Good quality and prompt delivery