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heat exchange tube 01.Commodity name:seamless austenitic alloy-steel tube for boiler/superheater and heat-exchanger tubes. 02.Process method:cold drawn/cold pilger. 03. Surface finish:annealed/cold pilger. 04Material;S31803,304,304l,310/S,316/316l DUAL grade ,317L,321, 347 with corresponding GB,,ANSI,EN,JIS,BS&ISO material designations. 05. Standards:JIS G3463,DIN17456/58,DIN2462,ASTM(ASME)A/SA 213/M, A/SA789,BS3059/3606&GB/T13296,EN10216-5. 06.Size(astm/asme size as under,other standards of size is for ready choice) a)O.D.:1/4" to 3". )W.T.:10BWG,12BWG,14BWG,16BWG,18BWG,20BWG,22BWG. 07.Length:Max.13 meters. 08. Delivery coditions:annealed&pickled. 09. Applications:for boiler,superheater and heat-exchanger service. 10.Packing :plastic bags for each piece then packed in seaworthy wooden cases. 11.Min order quantity:10 metric tons or upon negotiation. 12. Delivery date :Min.60 days. BWG22201816141210OutsideWalll Thickness mmDiameter0.710.891.241.652.112.773.4mmInchesWeight Kg/m9.533/80.1570.1930.25712.71/20.2140.2630.3560.45715.885/80.2710.3340.4550.58819.053/40.3270.4050.5530.7290.89525.410.440.5460.750.9811.2341.57431.751 1/40.5540.6680.9471.2441.5742.01438.11 1/20.6670.8321.1441.5141.9042.45444.51 3/41.3421.7742.2442.8943.550.821.5492.0342.5743.3344.0363.52 1/21.9492.5543.2444.2145.1376.232.3453.0843.9145.0946.1988.93 1/22.7293.6094.5845.9747.27101.644.1345.2546.8548.35114.34 1/24.6545.9247.7349.43