This standard pertains to stainless-steel pipe that is seamless, longitudinalseam, or spiral-seam welded; 1/2 in. (13 mm) in nominal diameter and larger; and intended for the transmission and distribution of potable water, wastewater, and reclaimed water, and Astm 316 / 316 L 20mm Diameter Seamless Stainless Steel ASTM 316 / 316 L 20mm Diameter Seamless Stainless Steel Pipe / Mirror Stainless Pipe / Tube. related production:(1)Cold rolled steel coils cut to plate Thickness:0.5mm-3.0mm width:800mm/1250mm (2) Galvanized steel plate. Galvanized steel coils cut to plate Thickness:0.1mm-2.5mm width:600mm/800mm/1250mm (3) Al-zinc coils and plate High Wall Thickness SS 316/316L Seamless Pipes, SCH 40S 316/316L Stainless Steel Heavy/High Thickness Pipes & Tubes! One of the largest manufacturer and supplier of stainless steel 316/316L seamless and welded heavy wall thickness pipes and tubes. All our tubes are 100% quality tested, which include chemical testing, mechanical testing, hydro testing and ultrasonic testing. All SS 316/316L big thickness pipes