90(O) LONG RADIUS ELBOW, ASTM A-234 WPB, BUTT WELD BEVELED ENDS, FOR H2S SERVICE, ASME B16.9, OE 6, SCH 40, L-7961-H2S REQUIRED DOCUMENTATION: CERTIFICATE OF MATERIALS AND TESTS (CHEMICAL COMPOSITION, MECHANICAL PROPERTIES) ACCORDING TO EN 10204 BRANDS APPROVED BY REPSOL AND/OR REFINERIA LA PAMPILLA SAA.