| After-sales Service: | Technical Support |
|---|---|
| Warranty: | 1 Year |
| Manufacturing Process: | Casting |
| Surface Treatment: | Phosphating |
| Operation Pressure: | Atmospheric Pressure |
| Material: | Carbon Steel |
| Customization: |
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Buttress Thread Casing Coupling External Upset Tubing Coupling
Our precision couplings material used is milled as domestic seamless, manufactured to the highest standards of API. We ensure all testing and material certifications are conforming to industry standards and customer defined requirements and control of specialty processes:
Mechanical Test Including Tensile Strength
Impact Test
Chemical Properties Control
Size Tolerances, Od, Wall Thickness, Length and Straightness
Threads Control, Threads Quantity Per Inch, Threads Angle
Heat Treating
Material Certification
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