... ASME/ANSI/JIS/DIN/BS 4.ISO9001/2000 Forged pipe fitting elbow ProductsButt Welded Pipe Fittings(Elbow,Tee,Redcuer,Cap & Bend,Flange)Size1 ... RangePetroleum,Chemical Industry,Metallurgy,Electric Power,Shipbuilding,Papermaking,Construction,Water Supply, and Sewerage Works etc.Payment TermsT/T or L/CCertificateISO9001 ...