Tight-Head UN Rated Steel Pail With Spout

1: Core UN Mark Explanation
Standard marking format: UN 1A1 / Y2.0/ 100
- 1A1: Steel tight-head non-removable head pail
- X/Y/Z: Packing Group (X=PG I high hazard; Y=PG II medium hazard; Z=PG III low hazard)
- 2.0: Maximum specific gravity of filling liquid
- 100: Hydrostatic test pressure (kPa) for leakage certification

2. Complete Structure & Components
2.1 Pail Body & Integrated Tight Head
- Raw material: Cold-rolled carbon steel / electrolytic tinplate, wall thickness 0.30–0.45 mm
- Reinforced horizontal rib rings: Anti-deformation, stable pallet stacking
- Triple-fold top & bottom seams: Multi-layer steel crimp welding to eliminate pinhole leakage risk
- Exterior finish: Anti-rust baking paint, customizable CMYK printing for logos, hazard warning labels

2.2 Spout Bung Assembly (Core Feature)
Two mainstream spout configurations for different filling & pouring demands:

1. Single spout (2" Rieke plug / NPT screw bung)
Standard small threaded opening for filling, sampling and controlled pouring; matched with plastic screw cap + inner tamper-evident foam gasket to block solvent volatilization and external moisture.

Optional pull-out flexible pouring spout accessory for clean, drip-free liquid dispensing after unscrewing the cap .

2.3 Available Carrying Handle
Galvanized foldable wire bail handle with plastic anti-slip sleeve, welded firmly to the top shoulder for portable lifting.

2.4 Custom Internal Linings (Chemical Compatibility Matching)
- Epoxy-phenolic lining: Anti-solvent, for paint thinner, resin, adhesive, ketones & esters
- Clear rust-inhibitor lining: For lubricants, hydraulic oil, cutting fluid, mineral oils
- Pure tin food-grade lining: For edible oil, food additives, cosmetic base liquids
- PVF fluoropolymer lining: Heavy-duty corrosion resistance for weak acid/alkaline industrial chemicals

3. Standard Available Capacities
Imperial Gallon Sizes
2.5gal, 3gal, 5gal (global mainstream), 6gal, 7gal

Metric Liter Sizes
10L, 15L, 20L, 25L
 

4. Key Advantages
1. Maximal Hermetic Barrier & Low Permeation
Fully closed integrated head without large open gaps; superior vapor-proof performance vs lug/open head pails, effectively locking volatile solvents, preventing weight loss and air oxidation of sensitive chemicals.
2. Full UN Hazmat Compliance
Passes strict UN drop test, hydrostatic pressure test and stacking load test; eligible for sea, land and air shipment of regulated dangerous liquids.
3. Space-Saving Stackable Design
Cylindrical ribbed structure supports multi-layer pallet stacking without bulging, optimizing warehouse and container loading efficiency.
4. Controlled, Clean Pouring Operation
Compact spout avoids massive spillage compared to wide-mouth open head pails; ideal for frequent small-volume dispensing in workshops.
5. Durable & Reusable
Steel body resists impact and chemical erosion; can be cleaned, refilled and reused multiple times after emptying, fully recyclable metal material.

5. Limitations vs Open Head (1A2) Pails
- No full wide-mouth access: Unable to load powder, thick paste or large solid raw materials; hard to thoroughly scrape residual viscous contents
- Slow filling efficiency: Only small spout for liquid injection, not compatible with high-speed paste filling production lines
- Difficult internal cleaning once solid sediment accumulates inside

6. Main Application Industries
1. Petrochemical Industry: Engine oil, gear grease, hydraulic fluid, anti-rust oil, metal cutting coolant
2. Coatings & Adhesives: Solvent-based paint thinner, clear resin, curing agent, single-component liquid glue
3. Hazardous Chemical Logistics: Medium & low-risk flammable liquids classified as UN PG II / III
4. Automotive & Machinery: Industrial cleaning agents, surface degreasers, anti-freeze solutions
5. Food & Cosmetic Raw Materials: Refined edible oil, food-grade solvent, liquid cosmetic base (with food-grade lining)
6. Construction Chemicals: Liquid waterproof primer, diluted epoxy sealant, solvent-based construction cleaner

7. Production & Quality Control Standards
1. Full automatic welding + triple crimp seam forming to eliminate liquid leakage points
2. 100% online air tightness testing for every finished pail before packaging
3. Batch UN certification performance inspection: 1.8m drop test, internal hydrostatic pressure holding test, stacking compression test
4. Available supporting certificates: UN dangerous goods packaging certificate, food contact safety test report, EU packaging waste compliance document