Hot-dip Galvanized Hollow Section Tube

Hot Dipped Galvanized Steel Pipes

Plating steel substrate and melting of the physical, chemical reaction to form complex structure, corrosion resistance of zinc alloy layer closely. Pure zinc alloy layer and layer and steel substrate. So the corrosion resistant ability. Hot dip galvanizing has a advantage of uniform coating, adhesion strong, long life etc.

Fabrication Process

Black pipe examination → acid washing → water washing→ solvent coating→ lining → drying → passivation → examination → water cooling → inside blasting → outside blasting → galvanizing → proceed cleaning → drying → printing → sprinkling passivation → packing → final examination storage.


Products Details

Outer diameter: 30*30-600*600mm

Wall thickness: 0.8-22mm

Length: 2m-5.8m/6m/12m or RANDOM LENGTH

Commodity: Pre/Hot dipped Galvanized Welded Square & Rectangular Steel Pipe

Standard: BS 1387, BS EN10296, BS 4568, BS 4568, BS 1139, JIS G3463, GB/T 3087, GB/T 3091, DIN 1626, DIN 2444, ASTM A53


GB:Q195, Q215, Q235, Q345

ASTM: Grade A, Grade B, Grade C, Grade D, Grade 50

EN: S185, S235JR, S235J0, S275, E335, S355JR, S355J0, S355J2

JIS: SS330, SS400, SPFC590, STKR400, STKR490

Zinc coating: Pre-galvanized steel pipe: 60-120G/M2; Hot dipped galvanized

steel pipe: 200-550G/M2

Surface: Bared, Galvanized, Oiled, Color Paint, 3PE; Or Other Anti-corrosive Treatment.

Inspection: With Chemical Composition and Mechanical Properties

Analysis; Dimensional and Visual Inspection, also with Nondestructive Inspection.

Usage: Scaffolding pipe, Structure pipe, Fence/Door pipe, Furniture, Low pressure fluid pipe for water oil or gas, Boiler pipe.

Main market: Middle East, Africa, Asia, Europe, America.

Packing: In bundles or in bulk, wrapped with woven bags, or according to client’s requirement


1. Special design available according to requirement.

2. Pipe can be necked down, punching hole on pipe wall.

3. Pipe fittings, elbows are available.

Our Advantages:

1. Swift Delivery

2. Competitive price and high quality product

3. Excellent export service