Product Standards Food Grade Sanitary Tube: JIS G3447, KS D 3585, ASTM A270, EN 10357(DIN 11850), AS 1528.1, ISO 2037(NF A49-249) Heat exchanger tube: ASTM A249 / ASME SA249, GB / T 24593-2009, HG 20537.2 Industrial pipe: ASTM A312, EN 10217-7, GB / T 12771-2008, HG 20537.3 Drinking water tube: GB / T 19228 Mechanical tube: ASTM A554, EN 10296-2 Production Size Outer Diameter Range: 9.5~2000mm Thickness Range: 0.5~20mm (Size can be customized.) Length: Up to 18.3 meters per piece.