High pressure alloy steel elbow 1:Material:SA234,SA105,SA335, 2:Standard:ASME ... B16.11 3:Size:1/4"--64" high-pressure alloy steel elbow 1. 1/2"--48"2. alloy steel elbow, 3. Degree: 180D (L ... : oil, gas, space flight, shipping, chemical industry, hydropower, fire control, boiler