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API 11B 25 Spray Welded (full Size FS) Rod Coupling
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API 11B 25 Spray Welded (full Size FS) Rod Coupling

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Product Description

1) Basic material: alloy structural steel 40Cr

2) Alloy powder: nickel base alloy

3) Standard: API Spec.11b

4) Main specifications and dimensions: outer diameter: 55.6mm; Length: 101.6mm.

5) Main technical performance: surface finish: Ra0.4; Coating thickness: 0.254mm-0.508mm; Hardness of basic material: HRA56-62; Alloy coating surface hardness: HRC 58-62;

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