ASME SA213 TP317L U Bend Tubes,Cold Drawn Stainless Steel Tube
317L Stainless Steel is a low carbon version of 317 stainless steel. It possesses the same high strength and corrosion resistance and will produce stronger welds due to its low carbon content. 317L is similar to 316L stainless steel but provides improved resistance to atmospheric corrosion, to many organic and inorganic acids and to food and beverages. 317L’s molybdenum content increases to 3 to 4% from the 2 to 3% in 316 and 316L. Many users are shifting over to this alloy in lieu of 304 and 316 as availability and cost improves.
Standards
ASTM A 213, ASME SA 213, ASTM A 249, ASME SA 249, ASTM A 688, ASME SA 688, ASTM A 789, ASME SA 789, ASTM B 163, ASME SB 163, ASTM B 167, ASME SB 167, ASTM B 668, ASME SB 668
Molybdenum bearing austenitic chromium nickel steel with an alloy content somewhat higher than the 316L grades.
Superior corrosion resistance in difficult environments.
Higher creep, stress-to-rupture and tensile strengths than other stainless steel.
Reduced intergranular precipitation of chromium carbides during welding and stress relieving as well as minimized possibility of corrosion failure from intergranular attack due to low carbon content.
Resistance to pitting corrosion and crevice corrosion making 317L a successful life-cost product in a variety of highly corrosive environments.
Bending radii from 1.5 X OD up to 1250MM. Minimum bending radii for OD′s over 28MM after agreement.
Leg length min. 1,000MM
Leg length max. 12,000MM
Heat treatment for radii up to 1,000MM
Technical standards:
Other specifications or special requirements available upon request. Copies of common standard specifications are available on request.
Hydrotesting:
After heat treatment all U-tubes are hydrotested.
Minimum holding time at the required pressure is 5 sec.
All tubes are dried and carefully cleaned after testing.
Measuring, cutting, deburring, cleaning:
U-bends are measured exactly in accordance with relevant standards, or to customer’s specification.
All tubes are cut to the specified leg lengths, ends are deburred and the tubes are internally cleaned with air.
Before packing, both ends are capped with plastic caps.
Packing:
In strong, open or closed, wooden boxes depending on destination - max. 8,000 kg.
Ends of tubes protected by plastic caps.
Vertical separators for each radius.
Chloride free plastic separators between each row, every 2 meters.
Each bundle is covered with plastic.
Customers can provide a packing drawing.
Packing lists, covered with plastic, are placed on each wooden box for easy identification of order details – including exact list of radii and lengths inside.
Chemical Composition of ASTM A213 / ASME SA 213 317 317L 317LM 317LMN
