Last Updated: June 2, 2026 Written by Shandong Pinjie Steel Co., Ltd. | 18+ years of professional agricultural steel manufacturing and export experience
Shandong Pinjie Steel Co., Ltd. is a professional manufacturer and exporter of agricultural galvanized steel products based in Guangrao, Shandong, China. Founded in 2008, we operate three state-of-the-art hot-dip galvanizing production lines with a total monthly capacity of 50,000 tons and employ over 320 skilled workers. For over 18 years, we have focused exclusively on delivering durable, cost-effective steel solutions for modern farming and breeding projects worldwide.
Agricultural environments present unique challenges for metal materials: high humidity, constant exposure to fertilizers and manure, and extreme weather conditions can quickly degrade inferior steel. That is why we have engineered our agricultural galvanized steel coil specifically to address these pain points. Our products are trusted by farmers, contractors and project managers across Africa, Southeast Asia, the Middle East and Latin America, with over 520 completed projects in 34 countries to date.
Core Specifications & Technical Standards
At Shandong Pinjie, we prioritize complete transparency and verifiable quality. Every coil we produce undergoes 12-point quality inspection, and all shipments include detailed material test reports (MTR) issued by our in-house CNAS-accredited laboratory. Our production processes are certified to ISO 9001:2015 (Certificate No.: SD-PJ-2025-0876) and all products comply with the latest international standards.
| Parameter | Standard Range | Agricultural Scenario Recommendation |
|---|---|---|
| Base Material | Q235B, Q355B | Q235B for general structures; Q355B for heavy-load grain silos and large-span greenhouses |
| Thickness | 0.12mm – 4.0mm | 0.8–1.2mm (fences, feeding troughs); 1.5–2.0mm (greenhouse frames); 2.5–4.0mm (livestock shed main beams) |
| Zinc Coating Weight | 60g/m² – 275g/m² | 120g/m² (dry farm regions); 200g/m² (moderate humidity); 275g/m² (high-corrosion livestock zones) |
| Coil Width | 600mm – 1500mm | Custom slitting available to match your existing processing equipment |
| Coil Inner Diameter | 508mm / 610mm | Standard for all global transportation and roll-forming lines |
| Surface Finish | Regular spangle, zero spangle | Zero spangle recommended for breeding facilities for superior hygiene and ease of cleaning |
| Execution Standards | ASTM A653/A653M-24, EN 10346, GB/T 2518-2019 | Full quality certificates provided with every order |
| Processing Capability | Cutting, bending, stamping, welding, roll forming | Guaranteed no cracking or zinc peeling during standard fabrication |
Key Advantages of Shandong Pinjie Agricultural Galvanized Steel
Unlike general-purpose industrial galvanized steel, our products are purpose-built for agricultural applications. We have optimized every aspect of our manufacturing process based on real-world field data from thousands of projects:
1. Reliable Corrosion Resistance
Our fully automated hot-dip galvanizing process creates a uniform, metallurgically bonded zinc layer that penetrates the steel substrate, providing comprehensive protection against corrosion. Based on 18 years of field testing across 34 countries:
120g/m² coating delivers 8–10 years of rust-free service in dry agricultural environments
275g/m² coating provides 15–20 years of reliable performance even in ammonia-heavy livestock facilities
Resists degradation from urea, manure, acidic soil and irrigation water
Reduces annual maintenance costs by up to 60% compared to uncoated or poorly galvanized steel
Note: For coastal farms with high salt exposure, we recommend our 275g/m² zinc-aluminum alloy coating, which extends service life by an additional 5–8 years.
2. Consistent Structural Strength
We use high-quality Q235B and Q355B base steels with consistent tensile strength (375–500 MPa) to ensure your facilities can withstand tough conditions:
Withstands wind speeds up to 120 km/h
Supports snow loads up to 0.5 kN/m²
Resists impacts from livestock and farm machinery without permanent deformation
Maintains structural integrity throughout the entire service life of your project
Note: Q235B is not recommended for environments with sustained temperatures below -30°C; for cold regions, we offer Q355B low-temperature steel.
3. Hygienic and Easy to Maintain
The smooth, non-porous zinc surface of our steel coils is ideal for livestock and poultry operations:
Prevents bacteria and mold growth
Can be easily cleaned and disinfected with all standard agricultural chemicals
Does not absorb odors or contaminants
Meets international hygiene requirements for commercial breeding facilities
4. Fully Customizable Solutions
We recognize that every agricultural project has unique requirements. Our flexible production capabilities allow us to provide customized solutions tailored to your specific needs:
Custom thickness, width and zinc coating weight
Pre-cut to exact lengths to minimize on-site waste and labor costs
Special surface treatments for enhanced corrosion resistance in extreme environments
Color-coated options available for branding or functional purposes
5. Cost-Effective Long-Term Investment
While our products may have a slightly higher initial cost than inferior alternatives, they deliver significant savings over their lifecycle:
No repainting or rust treatment required for 10+ years
Reduced frequency of structural component replacement
Lower labor costs for maintenance and repairs
Higher resale value for your agricultural facilities
Applications and Recommended Specifications
Shandong Pinjie galvanized steel is used in a wide range of agricultural infrastructure projects. Based on our 18 years of industry experience, we provide the following proven recommendations:
Livestock and Poultry Facilities
Breeding shed main frameworks: Q235B, 2.0–3.0mm thickness, 275g/m² zinc coating
Pen enclosures and partitions: Q235B, 0.8–1.2mm thickness, 200g/m² zinc coating
Feeding troughs and water tanks: Q235B, 1.5–2.0mm thickness, 275g/m² zinc coating
Walkways and guardrails: Q235B, 1.5–2.0mm thickness, 200g/m² zinc coating
Greenhouse and Horticulture Structures
Greenhouse frames and purlins: Q235B/Q355B, 1.5–2.5mm thickness, 200g/m² zinc coating
Ventilation and shading supports: Q235B, 1.0–1.5mm thickness, 120g/m² zinc coating
Irrigation pipe and sprinkler supports: Q235B, 1.2–1.8mm thickness, 200g/m² zinc coating
Grain Storage and Handling
Grain silo walls and roofs: Q355B, 2.0–4.0mm thickness, 275g/m² zinc coating
Storage bins and hoppers: Q235B, 1.5–2.5mm thickness, 200g/m² zinc coating
Conveyor systems and elevators: Q235B/Q355B, 2.0–3.0mm thickness, 200g/m² zinc coating
General Farm Infrastructure
Perimeter fences and farm gates: Q235B, 1.0–1.5mm thickness, 120–200g/m² zinc coating
Agricultural machinery replacement parts: Custom specifications
Transportation equipment components: Q235B, 1.5–3.0mm thickness, 200g/m² zinc coating
Why Choose Shandong Pinjie as Your Agricultural Steel Supplier
At Shandong Pinjie, we are committed to being more than just a steel supplier-we are your long-term partner for all agricultural infrastructure needs.
Rigorous Quality Control
All production facilities are certified to ISO 9001:2015 international quality management standards
We implement a comprehensive quality control system that covers every stage of production, from raw material inspection to final shipment
Every batch of steel is tested for thickness, zinc coating weight, tensile strength and surface quality
We provide full material test reports and quality certificates with every order
Deep Expertise in Emerging Markets
We have successfully completed over 520 agricultural projects in 34 countries, with particular expertise in African markets including Kenya, Nigeria, Tanzania and South Africa. Our team understands the unique climate conditions, local building practices and logistics challenges of these regions, allowing us to deliver tailored solutions that meet tight budgets and timelines.
Representative Project: In 2025, we supplied 2,000 tons of 275g/m² galvanized steel coil for a 500,000㎡ commercial poultry farm project in Ogun State, Nigeria. The material was used for shed frameworks, feeding troughs and ventilation supports. As of June 2026, the entire facility has been operating smoothly with no signs of premature rusting or structural deformation, exceeding the client's performance expectations.
Comprehensive Customer Service
Free sample service: We provide A4-sized product samples for quality verification (customer covers shipping costs; samples ship within 3 business days)
Flexible minimum order quantity: 5 tons for standard products, ideal for small projects and trial orders
Fast delivery: 7–10 days for standard sizes, 15–20 days for custom orders
Reliable logistics: We ship from Qingdao, Shanghai and Tianjin ports, with transit times of 25–35 days to most major African ports
10-year limited quality warranty: We offer a 10-year warranty against manufacturing defects and premature rusting caused by material or production issues. The warranty does not cover damage from improper installation, misuse or natural disasters. Claims are processed within 7 business days of receiving documentation.
Stable Production Capacity
Our state-of-the-art manufacturing facility features three advanced hot-dip galvanizing production lines with a total monthly capacity of 50,000 tons. We maintain a 15,000-ton inventory of standard specifications to ensure we can meet the demands of even the largest agricultural projects.
Frequently Asked Questions
Q: What is the difference between agricultural galvanized steel and regular galvanized steel?
A: Regular industrial galvanized steel typically has a thinner, less uniform zinc coating designed for general construction applications. Agricultural galvanized steel features a thicker, more consistent coating specifically formulated to resist the unique corrosive agents found on farms, including ammonia from manure, urea from fertilizers and constant moisture. Our agricultural steel also undergoes additional quality checks to ensure it meets the stricter hygiene and durability requirements of agricultural use.
Q: How long will your galvanized steel last in livestock facilities?
A: Our 275g/m² zinc coating products provide 15–20 years of reliable service in typical livestock conditions. For extremely high-corrosion environments such as intensive pig farming operations, we offer specialized zinc-aluminum alloy coatings that can extend service life to 25+ years.
Q: Do you offer pre-cutting services?
A: Yes, we provide precision pre-cutting services to your exact specifications. This service reduces on-site waste by up to 15%, saves labor time and often costs less than cutting locally.
Q: What payment terms do you accept?
A: We accept T/T (30% deposit, 70% against copy of bill of lading) and irrevocable L/C at sight. For established long-term partners with a proven track record, we can discuss more flexible payment arrangements.
Q: How can I get a quote?
A: Simply send us your project requirements including material grade, thickness, width, zinc coating weight, quantity and destination port. Our sales team will provide you with a detailed, transparent quote with no hidden fees within 24 hours.
Q: Do your products come with any certifications?
A: Yes, all our products comply with ASTM A653/A653M-24, EN 10346 and GB/T 2518-2019 standards. Our production processes are certified to ISO 9001:2015 (Certificate No.: SD-PJ-2025-0876), and we can provide CE certification upon request for European markets.
Q: How much does agricultural galvanized steel coil cost?
A: Prices vary based on material grade, thickness, zinc coating weight, order quantity and current market conditions. As of June 2026, standard Q235B 1.5mm 120g/m² galvanized steel coil ranges from $780 to $850 per ton FOB Qingdao. 275g/m² high-corrosion resistant coating adds approximately 15% to the base price. We offer volume discounts for orders over 50 tons.
Q: Can galvanized steel be welded?
A: Yes, our agricultural galvanized steel can be welded using standard arc welding techniques. However, we recommend using zinc-specific welding electrodes and ensuring proper ventilation during the process. Welding will temporarily remove the zinc coating in the weld area, so we provide complimentary zinc-rich paint for touch-up to maintain corrosion resistance.
Q: What should I do if the zinc coating is scratched during installation?
A: Minor scratches (less than 5mm in width) can be easily repaired using our provided zinc-rich paint. For larger areas of damage, we recommend using a cold galvanizing spray. Proper touch-up will restore the corrosion resistance of the steel and ensure it meets our warranty requirements.
At Shandong Pinjie Steel Co., Ltd., we are dedicated to helping farmers and agricultural businesses build durable, cost-effective infrastructure that stands the test of time. Our agricultural galvanized steel combines consistent quality, reliable performance and competitive pricing to support the success of your farming operations.
If you are planning an agricultural project and need high-quality galvanized steel solutions, please contact our team today. We will work with you to find the best products for your specific needs and provide you with a no-obligation quote.
