... features: Certificate:ISO9001-2000 Standard:JIS, DIN, ASTM, Material: carbon /stainless stele Reducer:1/2"-80" Typecarbon steel ... smelting, power, papermaking, chemical, medical equipment, aviation, boiler heat, exchanger, gas metallurgy, shipbuilding, construction, etcDelivery timeAccording to the customers requirementQualityFirst ... ISO9001-2000 strictly carbon steel bend connector for oil pipeline