TY - BOOK ED - American Petroleum Institute, API TI - Materials and fabrication requirements for 2-1/4Cr-1Mo & 3Cr-1Mo steel heavy wall pressure vessels for high temperature, high pressure hydrogen service: API Recommended Practice 934 U1 - Caja 21 PY - 2000/// CY - Washington PB - American Petroleum Institute, API KW - Normalización KW - Normas API ER -