... /WP321 Name:Carbon Steel Concentric Reducer, Available in 1/2 to 80-inch SizesMaterials:Carbon steel: ASTM A234 WPBStainless steel: ASTM ... , ISO, JIS, and DINWall thickness: SCH5 to SCH.XXSSize range: 1/2 to 80-inch (DN15 to DN2000)Applications: oil, chemical industry, water conservancy ... gmail com Carbon Steel Concentric Reducer, Available in 1/2 to 80-inch Sizes