Street Lighting Pole Manufacturer & Exporters

Q235B has a minimum yield strength of 235 MPa and tensile strength of 370–500 MPa, making it an economical, ductile choice for standard 6m–10m municipal roads with wind speeds under 140 km/h. Q355B (equivalent to ASTM A572 Grade 50 or European S355JR) provides a yield strength of 355 MPa and tensile strength of 470–630 MPa. We mandate Q355B for high masts, smart poles with heavy secondary attachments, and coastal installations subject to 160–180 km/h design wind loads, reducing wall thickness requirements while increasing fatigue resistance.

The Sandelin Effect occurs when steel with silicon content between 0.15% and 0.25% undergoes hyper-reactive, uncontrolled zinc-iron alloy growth in the molten zinc kettle, causing dark, brittle, thick coatings prone to chipping during transport. Xintong enforces strict raw material supplier agreements requiring low-silicon steel (Si < 0.03%) or aluminum-killed formulations. Our zinc kettle bath chemistry is tightly regulated with controlled nickel additions to inhibit abnormal alloy crystal growth and ensure ductile, uniform, and adherent zinc layers.

For every tender, our engineering department furnishes a complete submittal package: structural calculation sheets signed by registered structural engineers (wind load bending moments, shear stresses, deflection limits per AASHTO or EN 40), 2D CAD fabrication drawings, anchor bolt sizing and foundation reinforcement recommendations, Raw Material Mill Test Reports (MTR), Non-Destructive Testing (UT/MT) weld reports, Hot-Dip Galvanizing thickness certificates, and comprehensive DIALux EVO photometric simulation files.

To prevent white rust (zinc storage stain), all galvanized components receive a chemical passivating bath before packing. Poles are individually wrapped with vapor-phase corrosion-inhibiting (VCI) films and cushioned with non-absorbent high-density woven protective blankets. For container loading, our teams prepare custom CAD nesting and stowage plans: heavier octagonal base sections are positioned on hardwood dunnage saddles, while staggered nesting prevents friction damage and structural bending during sea transit.

Yes. In retrofit or urban rehabilitation projects where civil foundation anchor bolts are already cast in concrete, Xintong custom-cuts base plates to exact specifications. General contractors simply provide the bolt circle diameter (BCD), bolt diameter, base plate thickness, and opening dimensions. Using high-precision CNC plasma and laser cutting tables, we ensure 100% field alignment, complete with slotted bolt holes and heavy gusset reinforcements for added shear resistance.

In C4 and C5-M extreme marine environments (ports, sea terminals, coastal boulevards), standard hot-dip galvanizing alone may face accelerated depletion. Xintong provides a dual-protection Duplex System: hot-dip galvanizing to 100μm–120μm minimum thickness, followed by surface sweep blasting, epoxy barrier primer application, and an architectural fluorocarbon or polyurethane topcoat. This duplex synergy provides a sacrificial cathodic barrier and an impermeable shielding layer, delivering an engineered design life exceeding 25 to 30 years without major structural maintenance.