NUBOTECK & the three BSLs of API 20E
NUBOTECK has the capability to fulfull all the requirements of all three bolting specification levels, and so have aquired the licence to apply API monogram to these products. This licence was initially attained in the year 2021. The scope of licence is now expanded to include the products made through hot-working (forging).
NUBOTECK boltings are manufactured under the below approved scope for all 3 BSLs
- Studs: Machined Body with Machined or Rolled Threads
- Nuts: Forged or Machined Body with Machined Threads
- Bolt/Screws: Forged or Machined Body with Machined or Rolled Threads
Below controls have been established to ensure 100% conformance.
- Quality Management System - API Q1
- Steel Making Process - Melting, Casting, Hotwork Ratio
- Material Testing - Cleanliness, Chemistry, Inclusion, Banding
- Heat Treatment - Temperature Cycles, Equipment Calibration
- Mechanical Testing - Hardness, Tensile, Yield, Elongation, Impact
- Product Manufacuring - Hot Forming, Machining, Rolling, Tapping
- Non-Destructive Examination - Volumetric, Surface
- Dimensional Accuracy - Unified National Threads - ASME B1.1; Metric Threads - ASME B1.13M
- Coating & Plating - Hydrogen embrittlement prevention
