... ,ASME B16.91 USE: Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc. NAME:45 DEGREE BUTT-WELDED STEEL ELBOW FOR PIPESMATERIAL:A234-WPB ... ,ASME B16.91 USE: Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc. NAME:180 DEGREE BUTT-WELDED STEEL ELBOW FOR PIPES MATERIL:A234 ...