Galvanized Steel Door Head

Product Categories:

Steel raw materials

Door frame

Door facade

Door accessories

Finished doors

Door head

Product Description

Our company specializes in supplying high-end metal door header substrates, providing core material solutions for commercial stores, brand chains, building curtain walls and other scenarios. The products cover three types of steel substrates: galvannealed plates, hot-dip galvanized plates and cold-rolled steel plates. They possess both structural strength and decorative performance, and support surface precision processing and customized deep processing, to meet the needs of diversified door head design and engineering landing.

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Major parameters

Parameter Items	Description of specification
Base material	Galvannealed: Zinc coating adhesion ≥80g, red rust resistance time > 10 years (ISO 9227 standard)
	Galvannealed: zinc coating 80-275g/㎡（national standard GB/T 2518）, salt spray test＞300 hours
	Cold rolled: material SPCC/DC01, thickness 0.4-2.0mm（Accuracy: ±0.05mm）, surface finishment Ra≤0.8μm
Process type	Compatible with secondary processing such as pressing/punching/welding/bending
Size range	Coil plate: Width 1000-1250mm, inner diameter 508mm
Size range	Flat plate: Custom size (maximum 2500×1200mm)
Surface treatment	Fluorocarbon coating (30-year color retention), powder coating (RAL color system), wood grain/stone grain transfer printing
Installation system	Pre-buried type, flat frame type, expansion bolt fixation (accessories are optional)

Product advantage

Material performance benchmark

Galvannealed steel: Self-healing passivation layer resistant to scratches, outdoor service life increased by 50%

Hot-dip galvanized steel: Sacrificial anode protection mechanism, resistant to acid rain/industrial pollution (applicable to C4 environment)

Cold-rolled steel: Flatness < 1 IU/20mm, providing a perfect base surface for high-end spraying

Engineering adaptability advantage

The yield strength of all materials is≥260 MPa, supporting large-span door header structures

The elongation of cold-rolled plates is > 30%, suitable for complex curved surface designs

The galvannealed plate welding without zinc fume, reducing processing costs

Full-chain value assurance

Source control: The base materials are directly supplied by the steel mills, the zinc layer thickness can be traced by a third party.

Delivery guarantee: 5,000 tons of inventory on standby, support 72-hour delivery for urgent orders

Cost optimization: The utilization rate of the coil materials reaches to 95%, reducing waste of end materials.

Sustainable certification

Achieved ISO 14001 environmental system certification. The recovery rate of hot-dip galvanized sheets＞99%, the carbon footprint of cold-rolled steel <1.8kg CO₂/kg