... petroleum, chemical industry, metallurgy, ships, paper-making, electrical power, aerospace, pharmaceutical, water treatment, chemical fiber, urban construction, machinery and equipments ... 1/2" to 48" 4, Material: carbon steel A234 WPB WPC A105 A106, alloy steel, stainless steel 304 316 316L5, Packing: wooden cases, ... NPT/BSTPCertificate: ISO ,API , Delivery time: 20days 45 Deg Carbon steel elbow(LR)