API 20E boltings are applied to critical Surface and Subsea equipments used in Oil and Gas industry. API-20E specifications implies stringent quality requirements though the complete manufacturing process which infuses reliability and safety into these fasteners
Three Bolting Specification Levels:
API 20E BSL1,
API 20E BSL2,
API 20E BSL3
Three bolting specification levels have been defined in API 20E specification. Each bolting specification (BSL1, BSL2, BSL3) is unique due to the extent of quality controls that the bolting manufacturer has to establish. These controls start right from stage of raw material purchase and goes upto the final inspection of the product. Based on the pressure and temperature requirements of the equipment to which these fasteners are being applied to, the level of bolting specification is selected.
