Complaint
Hot dip galvanized welded pipe
Hot-dip galvanized pipe is to make molten metal react with iron matrix to produce alloy layer, so that the matrix and coating can be combined. First ,in order to remove the iron oxide on the surface of steel pipes, pickling is needed, ater tis ,the pipes are cleaned in a tank with aqueous solution of ammonium chloride or zinc chloride or mixture of the two and then sent into the hot-dip galvanizing tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.
Hot-dipped galvanized steel pipe type F, Type E and Type S. including of grade A and grade B,
ASTM A53,A500,A252,A795,BS1387-85,GB/T3091,ISO R65,API 5L
| Product Specifictions | |
| Material: | GrA,Gr.B,Gr.C, S235,S275,S355, A36,SS400, Q195,Q235,Q345 |
| Outer Diameter: | Square pipe:20*20mm~400*400mm Rectangular pipe:20*40mm~300*500mm |
| Wall Thickness: | Round pipe:0.95~17.75mm Square and rectangular pipe:1.7~16mm |
| Standard: | Hollow section: ASTMA500,EN10219,EN10210,JIS3466,GB/T 6728 |
| Certificate: | SO 9001:2008,SGS,BV,CCIC etc |
| Finish of pipe: | Hot dipped galvanized with zinc 220~260g/m2; Pre-Galvanized with zinc 30-150g/m2 Painted with black/varnish lacquer; Oil on the surface to prevent rust; Bare pipe without painting: |
| Pipe End: | Plain end/ Bevel end Groove end; Joint with flange; Threaded |
| Marking: | As per client requirement or mill standard Painting method: Spray white paint |
| Packing: | OD not less than 273mm: Loose packing.piece by piece. OD less than 273mm: In hexagonal seaworthy bundles packed by steel strips. Small size nested into big size |
