Commodity name: duplex stainless steel tubes Features: 1) type: austenitic 2) process method: cold drawn / cold rolled 3) o. D.: 6 - 219mm 4) w. T.: 0.5 - 25mm 5) grade: tp304, tp304l, tp316, tp316l, tp321, tp317l, tp321h, tp304h, tp304ln, 31803, 310s, 1.4571 6) standards: A) astm (asme) B) a213 / a213m (sa213 / sa213m) C) a269 / a269m D) a312 / a312m (sa312 / sa312m) E) din 17457 F) en10216-5tc1 / tc2 iso1127 7) widely used to manufacture outdoor equipment building materials, Heat-resistant parts and parts that are difficult to make heat treatment For chemical, coal and petroleum industries that have high requirements For intergranular corrosion resistant proper ties. Packing: bundle, seaworthy wooden case Packed in wooden cases