... /A53, DIN 3: ISO9001 ASTM A53 hot-rolled seamless steel pipe Specification Typehot-rolled seamless steel pipe ASTM A 53 Pipe Size1/2"—48" (DN15-1200)Wall ThicknessSCH10 ... equipment, boiler heat, exchanger, gas metallurgy, etc.Surface Hot galvanized, Cold galvanized, Painted black, varnish paint, anti rust oil, 3PE, ... with the copy of B/L) ASTM A53 hot-rolled seamless steel pipe camy(at)hnssd(dot)com