Hot Dipped Galvanized Steel Coil Factory Wholesale Supply

• Customization: Available
• After-sales Service: Good After-Sale Service
• Warranty: 2year
• Model NO.: DX51D+Z/Q195/sgcc/DX52D+Z
• Type: Seamless
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Galvanized
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Surface Finish: Regular Spangle
• Edge Treatment: Round Edge
• Size: Custom
• Output: Mass Production
• Specification: thickness 0.1-3.0mm
• Trademark: qianghua
• Origin: China
• Production Capacity: 500000PCS/Month

Product Description

Product Description

                     Superior Raw Material Control      

We only purchase first-grade low-carbon steel coils from large domestic steel mills as substrates, refusing recycled secondary materials. The stable base material guarantees the mechanical property consistency of finished galvanized coils, avoiding bending fracture and stamping cracking problems in downstream processing.

We supply four mainstream substrate grades to fit diverse production demands. DX51D+Z suits common bending and forming processing; DX52D+Z is engineered for deep drawing workpieces; Q195 low-carbon steel delivers excellent welding performance for structural fabrication; SGCC complies with Japanese industrial standards for home appliance and hardware manufacturing. 
Our production line supports customized dimension: thickness from 0.1mm ultra-thin specification up to 3.0mm heavy gauge, adjustable width covering 5mm narrow strips to 1500mm full-width coils. All raw materials undergo rigid composition testing before galvanizing to guarantee stable stamping, bending and welding performance for downstream production.

                 Flexible Supply Chain System      

We own independent production workshops and large storage yards, combining self-produced goods and long-term steel mill agency resources, which can balance price, stock and delivery time, whether you need budget economy-grade products or high-standard export-grade materials.

We integrate full processing services within our factory, including coil leveling, transverse shearing and longitudinal slitting. You can procure raw steel coils, or order finished flat sheets, narrow slit strips directly to skip secondary processing at your own workshop. 
With full grade and size coverage, we serve clients across construction, household appliance, automotive parts, hardware manufacturing industries. We can adjust production specifications strictly according to your drawings, arrange targeted packaging for ocean and land freight, and keep steady supply for both trial small orders and mass long-term procurement.

Specification

Standard	DX51D+Z,Q195,sgcc,DX52D+Z	Certification	ISO, RoHS
Surface Treatment	Galvanized	Zinc Coating Uniformityzinc Coating Unif	Even Zinc Layer
Specification	thickness 0.1-3.0mm	Export Packing	Waterproof Paper + Iron Strap
Width	5-1500mm	Export Packing	Waterproof Paper + Iron Strap
Origin	China	Transport Package	by Container
Production Capacity	5000t/Month	Trademark	qianghua

Common Application Fields

Household appliance shells, electrical cabinet enclosures 

Automotive stamped parts, vehicle interior structural  components 

Construction roofing, wall panels, ventilation ducts 

Hardware accessories, pipe fittings, solar mounting brackets 

Agricultural equipment, container manufacturing industry

Company Profile

FAQ

Q: What is pre galvanized steel round pipe? 
A: Pre galvanized steel round pipe is made of low carbon steel strip, roll formed and high frequency welded, with a complete zinc coating covered on the pipe surface in advance. It features round hollow structure, good anti-rust performance and smooth appearance, widely used for guardrail, greenhouse, steel structure and cable conduit.
 
Q: What is the difference between pre-galvanized and hot dipped galvanized pipe? 
A: Pre-galvanized pipe has thinner but uniform zinc layer, smoother surface and lower price, suitable for indoor and normal outdoor use. Hot dipped galvanized pipe has thicker zinc layer for stronger corrosion resistance, ideal for severe humid and coastal environments.
 
Q: What sizes do you supply? 
A: We provide complete outer diameters, wall thicknesses and standard lengths. Custom sizes, fixed lengths and special wall thickness can also be produced according to customer drawings and requirements.

Q: Does it need painting after installation? 
A: Normally no need. The pre-galvanized surface is smooth and anti-rust enough for direct use. If you need darker color or higher anti-corrosion requirement, you can spray extra paint on the surface.

Q: What is the service life of pre galvanized steel round pipe? 
A: In dry indoor environment, it can last more than 15–20 years. In ordinary outdoor environment, it can keep stable for 8–12 years. Service life depends on local humidity and weather conditions.

Q: Do you support sample delivery before bulk order? 
A: Sure. We can provide free samples within a reasonable quantity for quality checking and testing. Customers only need to bear the freight cost, which helps confirm product quality before large-volume procurement.

Q: What about your delivery and packaging service? 
A: We adopt standard bundled packaging to prevent scratch and deformation during transportation. We have stable production capacity and sufficient stock, can arrange fast delivery and match sea freight, land freight and container loading service.

Q: Do you have professional after-sales and technical support? 
A: We provide one-stop technical guidance for selection, processing and installation. If any quality problem occurs due to our production, we offer after-sales solution and compensation support to guarantee customers' interests.