welded steel elbow Nominal pipe size: 1/2 to 48 inches (DN15 to ... wall thickness: SCH20, STD, SCH40, XS, 1.Type:welded steel elbow 45-degree elbows, 90-degree elbows, 180-degree returns, straight ... (for JIS) 6. Available painting: varnish paint, black paint welded elbow