API20E Fasteners
Sayatva manufactures engineered bolting for critical service and safety-related applications. These specialized fasteners are marked with the API Monogram and meet industry-written standards as well as globally accepted management system specifications. This bolting is intended to be used in Surface & Subsea Equipment and API specifications such as API 6A, API 6D, API 6DSS, API 16A, API 16C, and API 17D Sayatva offers full traceability with EN10204 3.1 certification on all the products – Mill certification, Heat number, Lot numbers, Full test reports, and 3rd party inspection can be provided upon request. Products offered for the Oil & Gas industry: Compliance to Bolting Specification Level BSL-1, 2, 3 of API 20E.
| ASTM Designation | Bolt Grade | Service Condition | Temperature range | AISI | Nut Grade |
|---|---|---|---|---|---|
| ASTM A 193 | B7 | - | -20 deg F to 250 deg F | 4140 | A194 Gr 2H |
| ASTM A 193 | B7M | NACE | -20 deg F to 250 deg F | 4140 | A194 Gr 2H |
| ASTM A 320 | L7 | - | -75 deg F to 250 deg F | 4140 | A194 Gr 4 or A194 Gr 7 |
| ASTM A 320 | L7M | NACE | -75 deg F to 250 deg F | 4140 | A194 Gr 4 or A194 Gr 7 |
| ASTM A 193 | B8 | - | 750 deg F to 1100 deg F | SS | A194 B8 |
| ASTM A 320 | BBM | NACE | 750 deg F to 1100 deg F | SS | A194 B8M |
Coating Process
Sayatva provides manufacturing services as per the standard specifications. We also manufacture engineered products customized to the drawing and specification with different surface coatings.
| Xylan | B7 |
| Molybdenum Di Sulfide | Friction protection for high pressure loads |
| Phosphate | Ferrous metal coating for anti-galling and minor corrosion resistance |
| Zinc | Corrosion and weathering protection for steel |