Studs are metal rods with threads either on full length or at both ends. These complement with Nuts to bind the two surfaces together
Depending on the customer's specifications, chamfered ends are provided. Nominal Diameter sizes 5/8" - 3"
Nuts feature internal threads that fit to create a strong attachment between the joining surfaces.
Nuts may either have both sides chamfered or have one side as washer-faced. Nominal Diameter sizes 5/8" - 3"
Bolt, the counterpart of nut, feature an external, partially or fully threaded shaft. These have a head at one end.
Depending on the customer's drawings, geometry is customised further. Nominal Diameter sizes 5/8" - 3"
Xylan Coated Nuts
Coatings and electro-plating are provided only when required by our customers. These provide protection against corrosion to the product. The protection from exposure to elements is offered through our proven processes
Proven because, Our regular manufacturing process is such that we do not over-size the nuts or undersize the stud/ bolts - to allow for these coating. Our plating process based on ASTM F1941, does not induce hydrogen embrittlement and this has been tested. Further more, the salt spray test did not show any white and red rust.
The below bolting grades are the regular grades that we manufacture. Stock of the raw material used to manufacture these is maintained. We understand the criticality of the role played by the fasteners and so the raw material is sourced only from the approved steel mills.
Stud Grade | Nut Grade | Raw Material Steel Grade |
---|---|---|
ASTM A193 B7 | ASTM A194 2H | 4140, 4142, 4145, 4140H, 4142H, 4145H |
ASTM A320 L7 | ASTM A194 7 | 4140, 4142, 4145, 4140H, 4142H, 4145H |
ASTM A193 B7M | ASTM A194 2HM | 4130, 4140, 4142, 4145, 4130H, 4140H, 4142H, 4145H |
ASTM A320 L7M | ASTM A194 7M | 4140, 4142, 4145, 4140H, 4142H, 4145H |
Our bolting products are made to the withstand high pressure high temperature environments. We manufacture certified fasteners for Oil and Gas industry.
Product / Guideline | API Specification |
---|---|
Wellheads - Christmas Tree | API 6A |
Piping Valves | API 6D |
Subsea Pipeline Valves | API 6DSS |
Blowout Preventers | API 16A |
Choke and Kill Equipment | API 16C |
Drilling Well Control Equipment & Diverter Equipment | API 16D |
Marine Drilling Riser Equipment | API 16F |
Marine Drilling Riser Systems | API 16Q |
Subsea Wellhead and Tree Equipment | API 17D |
Guidelines for High Pressure & High Temperature | API 17TR6 |