... seamless) Qualification: ISO9001, API, CE, 90 degree elbow 1, Products: 90 Deg. LR Elbow, 90 Deg. SR Elbows, 180 Deg. LR ... 1/2" to 72" 4, Material: carbon steel, alloy steel, stainless steel5, Packing: wooden cases, wooden pallets, cartons6, Standard: ... , chemical industry, metallurgy, ships, paper-making, electrical power, aerospace, pharmaceutical, water treatment, chemical fiber, urban construction ...