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The Granite Tanks
Posted at: Offers to Sell and Export | Posted on: Friday 4 September 2026 8:38 am | Poster last visit: Friday 4 September 2026 |
Product Category: Main
» Commercial and Military and Private Vehicles and their Accessories and Components
» Motor vehicles
» War vehicles
» Tanks
» The Granite Tanks
Product Description:
Granite Tank — Granite Pickling Tank for Hot Dip Galvanizing
The granite tank is used in the chemical
pretreatment stage of the hot dip galvanizing process — typically for pickling and degreasing — where steel parts are treated with acid or alkaline solutions before entering the zinc kettle. Granite is a naturally acid- and alkali-resistant stone, making it a durable alternative to PP or stainless steel for tanks that hold corrosive pretreatment solutions.
Annuo's granite tanks are built with a steel structural shell lined internally with an acid-resistant barrier layer, over which flat granite slabs are installed to form the acid-contact surface. This construction combines the structural strength of steel with the natural chemical inertness of granite, keeping the corrosive solution fully isolated from the metal structure.
Construction & Advantages
Steel shell + granite slab lining: a steel structural frame provides rigidity and load-bearing strength, while flat granite slabs line the interior surface in contact with the acid or alkaline solution
Natural acid and alkali resistance: granite is chemically inert to most acids and alkalis used in HDG pretreatment, including hydrochloric acid solutions used for pickling
Crash and impact resistant: the dense, rigid stone surface resists mechanical damage better than thinner plastic linings, making it well-suited to environments with heavy parts handling
Flexible installation, simple maintenance: tanks can be configured to fit different plant layouts, and the smooth, non-porous granite surface is straightforward to clean and inspect
Long-term stability: because granite does not corrode chemically the way metal does, the tank lining maintains its structural integrity over many years of acid exposure
Granite vs PP vs Stainless Steel Pretreatment Tanks
Material Acid resistance Impact resistance Notes
Granite Excellent — naturally inert High — dense, rigid stone surface Well-suited to heavy parts handling and high-impact environments
PP (Polypropylene) Excellent — chemically inert Moderate Lighter weight, easier to fabricate into custom shapes, easy leak repair
Stainless Steel Poor in chloride/HCl environments High Prone to pitting corrosion in HCl; typically 1 – 4 years service life
Granite tanks are a strong choice where mechanical durability and long-term chemical stability are priorities. If your line needs lighter, more easily customized tank geometry, see our PP Pickling Tank page for comparison.
Company Contact:
Contact Name: Hongqi An
Company Name: Hebei Annuo Automation Technology Co., Ltd.
Email:
Tel: 8631189667533
Fax: 8631184752998
Street Address: Xinzhaidian
Industrial Zone Shijiazhuang, Hebei
051530 China
Other Contact Info:
Whatsapp: 8613703117050
Skype: 8613703117050
Website: https://www.annuogalvanizing.com
Member name: annuogalvanizing
Country: China
Member Since: 14 September 2021
Total Leads: 15 annuogalvanizing Import Export Business Leads
Business focus: Galvanizing Plant, Galvanizing Machine, Zinc Kettle, Hot Dip Galvanizing
Verify: Safe Import Export Tips
The granite tank is used in the chemical
pretreatment stage of the hot dip galvanizing process — typically for pickling and degreasing — where steel parts are treated with acid or alkaline solutions before entering the zinc kettle. Granite is a naturally acid- and alkali-resistant stone, making it a durable alternative to PP or stainless steel for tanks that hold corrosive pretreatment solutions.
Annuo's granite tanks are built with a steel structural shell lined internally with an acid-resistant barrier layer, over which flat granite slabs are installed to form the acid-contact surface. This construction combines the structural strength of steel with the natural chemical inertness of granite, keeping the corrosive solution fully isolated from the metal structure.
Construction & Advantages
Steel shell + granite slab lining: a steel structural frame provides rigidity and load-bearing strength, while flat granite slabs line the interior surface in contact with the acid or alkaline solution
Natural acid and alkali resistance: granite is chemically inert to most acids and alkalis used in HDG pretreatment, including hydrochloric acid solutions used for pickling
Crash and impact resistant: the dense, rigid stone surface resists mechanical damage better than thinner plastic linings, making it well-suited to environments with heavy parts handling
Flexible installation, simple maintenance: tanks can be configured to fit different plant layouts, and the smooth, non-porous granite surface is straightforward to clean and inspect
Long-term stability: because granite does not corrode chemically the way metal does, the tank lining maintains its structural integrity over many years of acid exposure
Granite vs PP vs Stainless Steel Pretreatment Tanks
Material Acid resistance Impact resistance Notes
Granite Excellent — naturally inert High — dense, rigid stone surface Well-suited to heavy parts handling and high-impact environments
PP (Polypropylene) Excellent — chemically inert Moderate Lighter weight, easier to fabricate into custom shapes, easy leak repair
Stainless Steel Poor in chloride/HCl environments High Prone to pitting corrosion in HCl; typically 1 – 4 years service life
Granite tanks are a strong choice where mechanical durability and long-term chemical stability are priorities. If your line needs lighter, more easily customized tank geometry, see our PP Pickling Tank page for comparison.
Company Contact:
Contact Name: Hongqi An
Company Name: Hebei Annuo Automation Technology Co., Ltd.
Email:
Tel: 8631189667533
Fax: 8631184752998
Street Address: Xinzhaidian
Industrial Zone Shijiazhuang, Hebei
051530 China
Other Contact Info:
Whatsapp: 8613703117050
Skype: 8613703117050
Website: https://www.annuogalvanizing.com
Member name: annuogalvanizing
Country:
ChinaMember Since: 14 September 2021
Total Leads: 15 annuogalvanizing Import Export Business Leads
Business focus: Galvanizing Plant, Galvanizing Machine, Zinc Kettle, Hot Dip Galvanizing
Verify: Safe Import Export Tips
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