... ,321,310S,S31803,904L Features:1) Type: Butt welded and seamless pipe fitting. 2) Size: We can also produce ... 321, 316, 316L, 304L, 304, ) and Super Duplex Steel.. 6) Our products are corrosion and high-temperature resistant. 7) Applications range: For ... power, papermaking, chemical, medical equipment, aviation, boiler heat exchanger, and other fields.Packing: as per customers' requests . pipe fitting