material: Q235, 20 #, 10 #, Q345, A234, WPB, WP5, WP9, WP11, ST37.0, ST35.8, ST37.2, ST35.4 / 8, ST42, ST45, ST52, ST52.4, STP G38, STP G42 , STPT42, STB42, STS42, STPT49, STS49
Standard: ASTM A234, ASTM A420, ANSI B16.9 / B16.28 / B16.25, ASME B16.9, JIS B2311-1997 / 2312, JIS B2311 / B2312, DIN2605- 1/2617/2615, GB12459-99, EN Standard etc
Sizes: OD: 1/2 “-72”
Surface treatment: oiling, spraying black paint (or varnish), galvanized, 3PE, FBE epoxy anti-corrosion coating etc
Inspection: water pressure test, X-ray inspection, ultrasonic inspection
Reducer