Hot Dip Galvanized Welded Pipe

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+8617862569838

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:2020mm~400400mm Rectangular pipe:2040mm~300500mm
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