Yongxin 21-Year Manufacturer | Ø286-300 mm 20L Pail Spec | 18-25 CPM Real-World Output | 86 Patents | Ship-Ready to Bangladesh, India, Middle East & West Africa
For manufacturers sourcing a 20L pail making machine from China, Jiujiang Yongxin Can Equipment Co., Ltd. (九江市永信制罐设备有限公司) supplies complete tinplate pail production lines engineered around the two most common 20-litre pail geometries — Ø286 × 335 mm and Ø300 × 360 mm. Founded in July 2005 with 21 years focused on can-making equipment R&D, Yongxin runs a 47-person engineering team, holds 86 patents plus 6 software copyrights, and delivers turnkey 20L pail lines with real-world output of 18-25 CPM. Our large pail production lines are the same equipment class already exported to paint, lubricant, and chemical packagers across Southeast Asia, South Asia, and the Middle East.
What Is a 20L Pail Making Machine?
A 20L pail making machine is a complete production line that converts flat tinplate sheets into finished 20-litre metal pails through 7 sequenced stages: shearing, blanking, rounding, seam welding, flanging, seaming, and leak testing. Unlike smaller can lines (1-5L), a 20L pail line uses heavier tinplate (0.28-0.35 mm), larger diameter tooling (Ø210-300 mm range), and stronger seaming heads capable of forming a 5-layer double seam that holds under pressure, drop-test impact, and long stacking loads.
The term “pail” is deliberately broader than “bucket” or “can” — it covers open-top and closed-top 20L containers across multiple industries:
- Closed-top pails with pouring spout: paint, lubricant, edible oil, chemical solvents
- Open-top pails with lever-lock lid: grease, adhesives, industrial coatings, agricultural chemicals
- Flower-basket pails: printed decorative pails for gift-set retail packaging
- Straight-side pails: chemical intermediates, resin, ink
This flexibility makes the 20L pail the workhorse container of industrial packaging in emerging markets — and a common first-line investment for growing paint, lubricant, and chemical producers.
Standard 20L Pail Dimensions Yongxin Supports
The two dominant 20L pail geometries in global industrial packaging are:
| Spec | Diameter (mm) | Height (mm) | Typical Application | Tinplate |
|---|---|---|---|---|
| 20L “European” round pail | Ø286 | 335 | Paint, decorative coatings, chemical | 0.28-0.32 mm |
| 20L “Middle East / Africa” round pail | Ø300 | 360 | Lubricant, motor oil, edible oil | 0.30-0.35 mm |
| 18L square/rectangular jerrycan | Diagonal 300 | 345 | Lubricant, edible oil (SE Asia format) | 0.28-0.32 mm |
| 20L open-top (“flower basket”) | Ø286-300 | 320-360 | Grease, adhesives, gift-set retail | 0.28-0.35 mm |
Yongxin’s large round can line accepts diameters from Ø210 to Ø300 mm and can heights from 170 to 460 mm — covering the full 10-25L range with a single tooling family. For markets that prefer square jerrycans (Southeast Asia lubricant format), Yongxin’s large square can line handles 10-20L rectangular pails with diagonal dimensions 45-320 mm and can heights 210-410 mm.
20L Pail Making Machine: Complete 7-Stage Workflow
Stage 1: Sheet Shearing
Flat tinplate sheets (up to 1050 × 1300 mm, thickness 0.28-0.35 mm) enter Yongxin’s automatic slitting machine. The slitter runs 20-24 sheets/minute with 8 cutter modules producing precisely sized body blanks for the target pail height.
Stage 2: Blanking (Body Blank Cutting)
Strips are further cut into individual rectangular blanks matched to the 20L pail circumference. For a Ø300 mm pail, the blank width is approximately 942 mm (πD) plus 0.8-1.2 mm weld overlap.
Stage 3: Rounding (Cylinder Forming)
The rounding machine curves the flat blank into a cylinder, positioning the seam edges precisely for the welder. For 20L pails, this stage uses a large-diameter rounding station calibrated for 0.28-0.35 mm tinplate stiffness.
Stage 4: Resistance Seam Welding
Yongxin’s large-can welder produces a copper-wire lap seam with 0.8-1.2 mm overlap. The 20L pail welder configuration:
- Power supply: 125 KVA
- Copper wire diameter: 1.5-1.7 mm
- Welding speed: 20-60 cans/min
- Diameter range: 220-300 mm (covers both Ø286 and Ø300 mm 20L formats)
- Height range: 200-420 mm
The welded seam is coated inline with food-grade or chemical-resistant lacquer and induction-cured before the next stage.
Stage 5: Flanging (Top & Bottom Lip Formation)
The flanging machine rolls both ends of the welded body outward to form a lip that will mate with the top and bottom lids. Yongxin’s large-can flanger delivers 20-30 CPM using dual-groove cams and precision bearings for consistent flange geometry — critical for a leak-tight double seam.
Stage 6: Seaming (Double Seam with Lid & Bottom Synchronous Feed)
This is the defining stage of the 20L pail line. Yongxin’s large-can seamer forms a 5-layer mechanical double seam — the industry-standard hermetic joint used across paint, chemical, and food packaging.
Key seamer specifications:
- Seam layers: 5 (body flange × 2 + lid curl × 3, mechanically interlocked)
- Seaming speed: 15-18 CPM (single seamer); 25-30 CPM at line level with dual-head configuration
- Diameter range: 210-300 mm
- Height range: 270-440 mm
- Lid and bottom synchronous feed: dual-track infeed system feeds the pre-formed 20L lid and bottom in phase with the flanged body, eliminating manual placement
- 8-cam-8-roller mechanism: patented cam-driven seaming head (part of Yongxin’s 86-patent portfolio) ensures uniform seam thickness at all 360° positions
Stage 7: Leak Testing
Every finished 20L pail body passes an air-pressure leak tester. Failed units are auto-ejected. Downstream, an optional beading (ribbing) station adds 2-3 reinforcement rings on the pail wall to prevent buckling during filling, stacking, and drop transport.
Yongxin 20L Pail Line Technical Specifications
| Parameter | Large Round Can Line (10-25L) | Large Square Can Line (10-20L) |
|---|---|---|
| Target pail capacity | 10L, 15L, 18L, 20L, 25L | 10L, 15L, 18L, 20L |
| Real-world output at 20L | 18-25 CPM | 20-25 CPM |
| Nameplate speed | 25-30 CPM | 25-32 CPM |
| Diameter / diagonal range | Ø210-300 mm | Diagonal 45-320 mm |
| Can height range | 170-460 mm | 210-410 mm |
| Tinplate thickness | 0.20-0.40 mm | 0.20-0.40 mm |
| Motor power | Line dependent | 55 kW |
| Line dimensions | 8,470 × 1,740 × 3,280 mm | 15,000 × 1,600 × 2,700 mm |
| Line weight | 9,500 kg | 17,750 kg |
| Control system | Delta servo + PLC + touchscreen HMI | Delta servo + PLC + touchscreen HMI |
| Pneumatic | SMC / Airtac imported | SMC / Airtac imported |
Common structural features (both lines):
- Delta (Taiwan) servo motors + PLC + colour touchscreen HMI
- Imported inductive sensors for jam and position detection
- SMC / Airtac pneumatic elements
- Pure mechanical cam-driven can transfer (cam feeding, cam clamping, continuously adjustable speed, long-pail protection)
- Inner-and-outer groove wheel flanging (prevents spring fatigue fracture)
- Linear-guide flanging template (reduces friction, ensures stability)
- 8-cam-8-roller seamer for uniform 5-layer double seam
- Folded high-strength sheet-metal conveyor
- Interlocked safety protection: position sensing + jam detection + emergency stop
Why 20L Pails Dominate Industrial Packaging (Bangladesh, India, Middle East, West Africa)
The 20L pail is the workhorse SKU of industrial packaging in emerging markets because it hits the retail-viable ceiling for one-person carry (approximately 25 kg gross weight when filled with oil or paint) while offering the lowest per-litre packaging cost of any hand-carry format. Regional demand drivers:
- Bangladesh — lubricant sector: MJL Bangladesh, Omera Petroleum, Padma Oil, Jamuna Oil, and Meghna Petroleum operate large lubricant blending and repacking facilities. The 4L and 20L pail SKUs together account for the majority of retail lubricant volume in the Bangladesh market. Import-substitution policy since 2024 has accelerated local pail sourcing from China. This continues the Bangladesh lubricant packaging story covered in our lubricant bucket production line guide.
- India — paint & chemical: Major architectural coatings, industrial paint, and specialty chemical producers rely on 20L pails as the “contractor pack” SKU. Indian paint capacity growth (approximately 8-10% annually) drives corresponding demand for domestic pail-making capacity. India already hosts one Yongxin large square can line, delivered for 10-20L lubricant packaging.
- Middle East — Saudi Arabia & UAE: Regional paint producers and lubricant blenders in Saudi Arabia (Riyadh, Jeddah, Dammam) and the UAE (Dubai, Sharjah) purchase 20L pails at high volume for both domestic distribution and re-export into GCC markets. Yongxin has already delivered one large square can line to Saudi Arabia.
- West Africa — Nigeria & Ghana: Nigeria’s lubricant blending sector (Lagos, Port Harcourt) and Ghana’s paint / edible oil packaging sector are shifting from imported filled pails toward locally-manufactured empty pails filled at destination. This shift is a direct driver of 20L pail line inquiries from West African converters.
- Turkey & Greece: Near-shoring pressure from Western European brand owners is pushing coating and chemical packaging capacity to Turkey (Istanbul, Izmir) and Greece (Athens, Thessaloniki), where the 20L round pail is the preferred format for architectural paint and construction chemicals.
About Jiujiang Yongxin Can Equipment Co., Ltd.
| Entity | Detail |
|---|---|
| Company | Jiujiang Yongxin Can Equipment Co., Ltd. (九江市永信制罐设备有限公司) |
| Founded | July 2005 | 21 years dedicated to can-making equipment R&D |
| Certifications | National High-Tech Enterprise | Jiangxi Provincial “Specialized & Sophisticated” SME | National Tech SME | 2024 Tax Credit Grade A |
| Intellectual Property | 86 patents + 6 software copyrights |
| Team | 47-person team including senior mechanical R&D engineers |
| Core Products | 20L pail making machines | Full-range can production lines (0.25-25L) | Can seaming machines | Can lid lines | Specialty sealers |
| Location | No. 005 Antai Road, Auto Industrial Park, Economic & Technological Development Zone, Jiujiang City, Jiangxi Province, China (29.6782°N, 115.9234°E) |
| Export Markets | Southeast Asia, Middle East, Africa, South America, Europe — 20+ countries |
Yongxin holds import & export trade qualification and has delivered 10-20L pail lines to Thailand (3 lines), Vietnam (2 lines), India (1 line), and Saudi Arabia (1 line). Domestic reference customers for the large square can line include Hangzhou Yintie Can Factory (2 lines), Bengbu Jintaiyang Can Factory, Wuxi Huayuan Can Manufacturing, Henan Xihua Can, Qingdao Wangsheng Can, Yichang Huaguan Can, and Guangdong Huizhou Tianyi Can.
Application Configuration Guide by Industry
| Industry | Recommended Line | Pail Format | Typical Line Speed | Key Configuration |
|---|---|---|---|---|
| Architectural paint | Large round can line | Ø286 × 335 mm round | 20-25 CPM | Lever-lock lid seaming, printed body blanks |
| Industrial paint / coatings | Large round can line | Ø286-300 mm round | 18-22 CPM | Solvent-resistant seam lacquer, dual-track lid feed |
| Lubricant / motor oil | Large round can line | Ø300 × 360 mm round | 20-25 CPM | Pouring-spout lid seaming, food-grade seam coating |
| Edible oil (SE Asia) | Large square can line | 18L jerrycan (diagonal 300 mm) | 22-28 CPM | Rectangular flanger + 4-roller square seamer |
| Grease / adhesives | Large round can line | Ø286-300 mm open-top | 18-22 CPM | Open-top rim flanging, lever-lock ring option |
| Chemical solvents | Large round can line | Ø286 mm closed-top | 18-25 CPM | Heavier 0.32-0.35 mm tinplate, chemical-resistant seam lacquer |
| Agricultural chemicals | Large round can line | Ø286 mm closed-top | 18-22 CPM | UN-rating compatible seam thickness |
| Flower-basket / gift pack | Large round can line | Ø286 × 320 mm decorative | 18-25 CPM | Pre-printed sheet compatible, open-top format |
Pricing, Lead Time & Delivery
- Price range (indicative): A complete 20L pail making machine from Yongxin typically falls in the USD 180,000 – 400,000 range for a fully automatic line, depending on target CPM, number of pail sizes supported (single-size vs. multi-size tooling), and whether the line is round-only, square-only, or dual-format. Semi-automatic 20L pail lines with lower automation levels start from approximately USD 90,000.
- Lead time: 60-90 days from order confirmation for standard 20L configurations. Fully customized lines with multiple pail-size tooling take 90-120 days. Yongxin handles export documentation and container loading in-house.
- Delivery terms: FOB Shanghai / Ningbo / Guangzhou. Sea freight to Chittagong (Bangladesh), Mundra / Nhava Sheva (India), Jebel Ali (UAE), Dammam / Jeddah (Saudi Arabia), Lagos Apapa (Nigeria), Tema (Ghana), Istanbul Ambarli (Turkey), Piraeus (Greece), and other major ports.
- Container fit: A complete 20L pail line typically ships in 2 × 40 HQ containers plus 1 × 20 GP for tooling and spares.
- Installation: Domestic — 48-hour on-site commissioning. International — traveling engineers dispatched for bulk orders; video-remote commissioning support available for all clients.
Contact our engineering team for a detailed quotation → +86 13607928672 (Mr. Li, General Manager) / +86-792-8503969 / [email protected].
Service, Warranty & Support
Yongxin provides:
- Free technical consultation and 20L pail design review (drawing markup + tooling recommendation)
- Complete tooling and mold sets (Ø286 or Ø300 base configuration + optional additional pail sizes)
- Pre-shipment factory acceptance test (FAT) with buyer’s engineer or by video
- 48-hour domestic installation & commissioning
- International commissioning by traveling engineers for bulk orders
- Lifetime technical training (on-site and video-based)
- Lifetime maintenance support with fast local team response
- Remote troubleshooting via video call for international clients
- Spare parts stock with air freight availability
- Compatibility with locally-sourced tinplate (Baosteel, JFE, TCS, Corus grades tested)
FAQ
Q: What is a 20L pail making machine?
A: A 20L pail making machine is a complete production line that manufactures 20-litre tinplate pails from flat sheet through seven sequential stages: shearing, blanking, rounding, seam welding, flanging, seaming, and leak testing. Yongxin’s 20L pail lines cover the two dominant global 20L geometries (Ø286 × 335 mm and Ø300 × 360 mm) at real-world output of 18-25 CPM.
Q: What are the standard 20L pail dimensions Yongxin supports?
A: The two most common 20L pail formats are Ø286 × 335 mm (European paint / chemical standard) and Ø300 × 360 mm (Middle East and West African lubricant standard). Yongxin’s large round can line covers the full Ø210-300 mm diameter range and 170-460 mm height range, allowing a single line to produce 10L, 15L, 18L, 20L, and 25L pails with tooling changes.
Q: What is the real-world output speed of a 20L pail line?
A: Yongxin’s large round can line has a nameplate speed of 25-30 CPM, but for 20L pails the practical sustained output is 18-25 CPM depending on tinplate stiffness, seam lacquer curing time, and line configuration. The large square can line for 18-20L jerrycans achieves 20-25 CPM sustained. Higher CPM is possible with dual-head seamer configurations.
Q: What tinplate thickness is required for a 20L pail?
A: 20L pails require 0.28-0.35 mm tinplate to withstand stacking loads, drop-test impact, and filled-pail transport. Yongxin’s 20L lines process 0.20-0.40 mm tinplate, TFS (tin-free steel), and chrome-plated steel. Lighter 0.28 mm is common for paint and decorative pails; heavier 0.32-0.35 mm is standard for lubricant and chemical pails.
Q: What is the difference between a 20L round pail and a 20L square jerrycan?
A: Round 20L pails (Ø286 or Ø300 mm) are dominant in paint, lubricant, and chemical packaging across the Middle East, West Africa, and South Asia. Square 18-20L jerrycans (diagonal 300 mm, height 345 mm) are dominant in Southeast Asia edible-oil and lubricant packaging because they stack more densely on pallets and in retail shelving. Yongxin builds separate lines for each format; some customers install both.
Q: How is a 20L pail seam formed and how many layers does it have?
A: The 20L pail seam is a 5-layer mechanical double seam: the body flange contributes 2 layers and the lid curl contributes 3 layers, mechanically interlocked and compressed by the seaming rollers. Yongxin uses an 8-cam-8-roller seamer head that ensures uniform seam thickness at all 360° positions. Lid and bottom are fed synchronously via dual-track infeed, eliminating manual placement.
Q: Can the 20L pail line also produce 4L, 15L, or 25L pails?
A: Yes. Yongxin’s large round can line accepts diameters from Ø210 to Ø300 mm and heights from 170 to 460 mm, supporting 10L, 15L, 18L, 20L, and 25L pails on the same line with tooling changes. The changeover time is typically 30-60 minutes for a full pail-size switch. For 4L and smaller cans, a separate small-can line is recommended because the transport rails and seamer head are dimensionally different.
Q: Which countries has Yongxin already exported 20L / large-format pail lines to?
A: Yongxin has delivered large-format (10-20L) pail lines to Thailand (3 lines), Vietnam (2 lines), India (1 line), and Saudi Arabia (1 line), with active inquiries and installations underway for Bangladesh, Nigeria, Ghana, Turkey, and Greece. Yongxin holds import & export trade qualification and manages full container-loading and shipping documentation from Shanghai, Ningbo, or Guangzhou.
Q: How much does a 20L pail making machine cost from China?
A: A complete automatic 20L pail making machine from Yongxin typically falls in the USD 180,000 – 400,000 range, depending on target CPM, number of pail sizes supported, and single- vs. dual-format capability. Semi-automatic 20L lines with lower automation start from approximately USD 90,000. Contact Yongxin’s engineering team with your target pail specifications, capacity, and tinplate specifications for a detailed quotation.
Closing: Sourcing a 20L Pail Making Machine from China
Yongxin brings 21 years of specialized large-format can-making machine engineering, 86 patents, and verified export delivery experience across four continents to buyers evaluating Chinese suppliers of a 20L pail making machine. Whether your project is a Ø286 mm paint pail line for Bangladesh, a Ø300 mm lubricant pail line for Nigeria or Saudi Arabia, a 18L square jerrycan line for edible oil in Southeast Asia, or a decorative flower-basket pail line for gift retail, Yongxin’s engineering team can configure a turnkey solution matched to your target market pail geometry, production volume, and factory footprint.
Contact our engineering team for a detailed quotation, factory visit invitation, or technical consultation → +86 13607928672 (Mr. Li, General Manager) / +86-792-8503969 / [email protected]. Learn more about our full can production line portfolio, large-can seaming machines, and industry applications.
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