ASTM Carbon steel material ,pass CE and ISO, flange(fittings,pipe fitting,stainless flange) 1) Type: socket welding pipe fitting2 ... , 321, 321H, 310S, 347H)6) Our products are corrosion and high-temperature resistant7) Applications range: for use in the petroleum ... , power, papermaking, chemical, medical equipment, aviation, boiler heat exchanger, and other fieldsPacking: As per customers' requests