Description

The structure: API standard couplings outer surface deposition of tungsten alloy layer.



The performance indicators: The basic properties: size, accuracy according to API standard thread.



Corrosion properties: Anti Hâ‚‚S / COâ‚‚ temperature corrosion resistance to salt water corrosion, alkali, corrosion resistance, weak acid corrosion, NACE 0177 to meet the standard requirements for corrosion resistance.



 Wear: Good wear resistance, superior or equivalent to chrome.



Tungsten alloy layer and the substrate binding: According to GB / T5270-2005 testing, coating does not crack, not falling.



Appearance: Uniformly bright, silvery white.



Tungsten alloy layer thickness :> 40μm



Tungsten alloy layer surface hardness: ≥600HV