API 11B 28 Spray Welded Slimhole (SH) Rod Coupling

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: 57.15mm; Length: 114.3mm.

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;