China Supplier for Big Sizeprecise Cold Drawn Seamless Steel Pipe China Seamless Welded Carbon Steel

1.Product InformationProduct NameChina Supplier for Big SizePrecise Cold Drawn Seamless Steel PipeOD20-219mm,WT:0.8-12mmSize10*10-400*400mm,WT:0.8-12mmLength0.3-13m or as your requCrane irementSurfacePre-galvanized/Hot Dip Galvanized/Oiled/PaintedZinc Coating50-150g/m2 for Pre-galvanized,200-600g/m2 foCapacitor r hot dip galvOther Instruments & Meters anizedMaterialQ195/Q215/Q235/Q345/Q195-Q235StandardASTM-A53 /BS 1387-1985/ GB/T 3091-2001 for round pipe
ASTM A500 /GB/T3094 for square/rectangular pipeEndsPlain /Beveled/ Threaded with sockets coupling and plastic caps/ Necking down/expanding neck/punching holes

2.Quality Assure:

Quality assure:1),Basic guarantee:Raw material guarantee,we use the TsiLean Pipe & Pipe Rack System ngshan Brand raw material,the quality is good,adding we use the spectrum direct-reading test,our professional workers &equipments,we could guarantee the tubes is right of the clients' needs.2),Process control:follow the process chart adding our workers' care
3),Inspection& TestDirect-reading Spectrum Instrument analytic for chemical composition, Yield Strength, Tensile Strength, Elongation,Building Material Making Machinery Hardness Test, Flattening Test, Flaring Test, Eddy Current Test, Ultrasonic Test, Hydrostatic Test, Corrosion Test, etc