HGS350A Semi-Automatic Blow Molding Machine – 20L | 150–400 BPH
Semi-automatic PET stretch blow molding machine at 580×390 mm pillar space, 330–400 mm mold capacity, 550 mm stretching stroke, 150–400 BPH for containers up to 20 litres. Largest model in the Korea Ever-Power HGS Series — 1,500 kg, 2,270×860×1,770 mm.
HGS350A (20L)
Semi-Automatic PET Stretch Blow Molding Machine — 580×390 mm Pillar Space · 330–400 mm Mold · 550 mm Stretch
20 Litre Max · 150–400 BPH · 1,500 kg · 2,270×860×1,770 mm · Korea Ever-Power
Product Overview
The HGS350A (20L) is the largest and most capable machine in Korea Ever-Power's HGS Series — built specifically for semi-automatic production of PET containers up to 20 litres. At this scale, the machine enters territory occupied almost exclusively by dedicated automatic lines and industrial injection-blow equipment: 20-litre water jugs, large drum-format chemical containers, institutional cooking oil, and bulk agricultural chemical storage. The HGS350A brings semi-automatic flexibility and lower capital cost to a market segment where alternatives are few and expensive.
At 580×390 mm pillar space, 330–400 mm mold capacity, 550 mm stretching stroke, and 500 mm open mold stroke, the HGS350A is engineered around the physical demands of 20-litre PET container production. The machine weighs 1,500 kg and measures 2,270×860×1,770 mm — a substantial step up from the HGS280A, reflecting the structural requirements of the 20-litre cavity and the high-pressure blow forces involved. Output ranges from 150 to 400 BPH, reflecting the significantly longer cycle time per 20-litre container compared to smaller formats.
▶ 20 L — largest PET volume in the HGS range
▶ 550 mm stretching stroke — longest in the entire HGS Series
▶ 500 mm open mold stroke — clearance for widest 20L molds
▶ 150–400 BPH — lower throughput, longer cycle per container
Fully automatic 20-litre PET blow molding lines require capital investment far beyond what most regional producers can justify. For producers making 5,000–60,000 twenty-litre containers per month, the HGS350A provides the only economically viable self-blown production route.
A 20-litre container holds 16× more than a 1.25-litre bottle. At 300 BPH, the HGS350A fills the equivalent of 4,800 litres of container volume per hour — comparable in liquid-litre throughput to much higher-BPH machines producing smaller formats.
New 20-litre bottle designs — structural changes to water jugs, new drum formats for agrochemicals, institutional food-grade containers — require prototype production before tooling investment. The HGS350A produces 20-litre samples at the same low cost per run as smaller semi-automatic machines.
20-litre water jugs, bulk cooking oil, institutional cleaning chemicals, and agricultural chemical storage PET containers are high-demand products in African, Southeast Asian, Middle Eastern, and Latin American regional markets — where local self-blown production is more competitive than importing pre-blown containers.
What the HGS350A Produces — Up to 20 Litres
Standard 20-litre PET water jugs — the primary application for the HGS350A globally. Water cooler-style 20-litre refillable or single-use PET jugs in round or drum formats with body diameters in the 330–380 mm range.
20-litre PET drum-format containers for concentrated industrial cleaners, solvents, lubricants, and chemical storage. The wide 580×390 mm pillar space and 330–400 mm mold range accommodate wide drum-format mold tooling.
20-litre institutional cooking oil, bulk vinegar, and large-format food-grade PET containers for catering, restaurant supply, and bulk food retail. The HGS350A's 400 mm mold ceiling accommodates the widest 20-litre cooking oil container formats.
20-litre PET storage containers for liquid fertilisers, pesticide concentrates, and crop protection chemicals. Large-format agricultural PET is an emerging replacement for HDPE in markets where PET clarity and chemical resistance are valued.
Technical Specifications
| Mold Configuration | |
| Pillar Space (W × H) | 580 × 390 mm — largest in HGS Series |
| Mold Capacity Range | 330 – 400 mm |
| Open Mold Stroke | 500 mm — largest in HGS Series |
| Stretching Stroke | 550 mm — longest in HGS Series |
| Sealing Stroke | 50 mm |
| Mold-Locking Mechanism | Pneumatic hydraulic linkage (toggle-type) |
| Container Specifications | |
| Bottle Capacity | Up to 20 Litres (20,000 ml) |
| Compatible Preform Material | PET |
| Production Performance | |
| Output Efficiency | 150 – 400 BPH (operator-dependent) |
| Electrical & Air System | |
| Power Supply | 220V / 50Hz |
| Operating Air Pressure | 0.8 MPa |
| Blowing Air Pressure | 3.0 MPa |
| Machine Dimensions | |
| Size (L × W × H) | 2,270 × 860 × 1,770 mm |
| Machine Weight | 1,500 kg |
| Matching Heater Unit (sold separately) | |
| Recommended Heater Models | HGJ-CL (standard neck, 96-position) or HGJ-B (wide neck, 18/36-position, up to 130 mm) |
| Heater Power | 5 – 8 kW (three-phase four-wire) |
HGS350A vs HGS280A — The Final Step
| Parameter | HGS350A ← This Model | HGS280A |
|---|---|---|
| Max Bottle Volume | 20 L | 10 L |
| Pillar Space | 580×390 mm | 525×370 mm |
| Mold Capacity | 330–400 mm | 220–300 mm |
| Stretching Stroke | 550 mm | 400 mm |
| Open Mold Stroke | 500 mm | 280 mm |
| Output Range | 150–400 BPH | 500–980 BPH |
| Machine Weight | 1,500 kg | 550 kg |
| Machine Size | 2,270×860×1,770 mm | 1,630×560×1,570 mm |
Core Engineering Features
550 mm Stretching Stroke — The Longest in HGS
The 550 mm stretch rod travel is 150 mm longer than the HGS280A's 400 mm and 230 mm longer than the HGS200A's 320 mm. This extended stroke is necessary for 20-litre containers — which are significantly taller than all smaller formats — to achieve the required axial orientation ratio for wall strength, drop resistance, and top-load performance on full 20-litre containers.
500 mm Open Mold Stroke — Clearance for 20 L Bodies
The 500 mm mold opening stroke — the largest in the HGS Series — provides the clearance required for a fully blown 20-litre container to exit the mold cavity without contact on either mold half. 20-litre containers have body diameters typically 330–400 mm and heights that require substantial clearance during mold opening for the operator to remove the blown container safely and efficiently.
580×390 mm Pillar Space — Largest in HGS
The 580×390 mm pillar space is the largest in the HGS Series — 55 mm wider and 20 mm taller than the HGS280A. It provides clearance for 20-litre mold tooling, including the reinforced mold bodies, wider cavities, and taller mold heights required for 20-litre container production, including drum-format wide-body designs.
150–400 BPH — Understanding 20 L Output
The 150–400 BPH range reflects the substantially longer cycle time per 20-litre container: preform loading, heater conditioning, blow station cycle, container removal, and preform reloading take considerably longer per cycle than at 5-litre or 10-litre scale. At 300 BPH, the HGS350A produces the equivalent liquid volume as an HGS200A running at 4,800 BPH on 1.25-litre containers — output volume per hour is comparable; only the container count differs.
1,500 kg — Purpose-Built for 20 L Scale
The HGS350A weighs 1,500 kg — nearly 3× the HGS280A's 550 kg. This reflects the structural mass required to withstand the mold clamping forces on a 330–400 mm cavity at 3.0 MPa blowing pressure, the larger frame dimensions needed to accommodate the 580×390 mm pillar space, and the reinforced blow station required for 20-litre preform and container handling. Floor loading assessment is required before installation.
2,270×860 mm — Larger Footprint, Smaller Than Alternatives
The 2,270 mm length and 860 mm width are substantially larger than the smaller HGS models — but remain compact relative to dedicated 20-litre automatic production equipment. The footprint requires a dedicated production bay but no specialist facility modifications beyond standard floor loading assessment and 3.0 MPa high-pressure air supply. Korea Ever-Power provides installation layout drawings on request.
The HGS350A spans from 20-litre water jugs and bulk chemical drums to institutional edible oil and agricultural chemical storage containers.
About Korea Ever-Power
Korea Ever-Power is a dedicated PET blow molding machine manufacturer with over 20 years of R&D and production experience, operating from a 20,000 m² production facility. The HGS350A represents Korea Ever-Power's commitment to making 20-litre PET blow molding accessible at semi-automatic scale — a capability previously available only through large automatic lines. Multiple national patents and ECM Verification of Compliance. Export destinations include Malaysia, Indonesia, Peru, Chile, Russia, Philippines, Norway, Morocco, Qatar, and more.
✅
Each HGS350A is run-tested on 20-litre PET molds before shipment — 550 mm stretch, 500 mm open stroke, and mold-locking force confirmed.
🔧
Korea Ever-Power designs blow molds for 20-litre formats within the 330–400 mm capacity range, including standard 20-litre water jug and drum profiles.
📚
Korea Ever-Power provides facility layout drawings for the HGS350A including heater unit placement, air supply routing, and floor loading specifications.
🌡️
HGJ-CL or HGJ-B heater supplied alongside the HGS350A. 20-litre preforms require extended conditioning time — heater specification discussed at quotation stage.
Frequently Asked Questions
What is a realistic BPH for 20-litre production on the HGS350A?
For standard 20-litre round water jug formats with a well-tuned heater, a trained operator typically sustains 250–320 BPH over a full shift. Wider drum-format 20-litre containers with 380–400 mm body diameters may run at 200–260 BPH due to extended mold open/close and container removal time. At 280 BPH over two 8-hour shifts on a 22-day monthly schedule at 85% utilisation, output is approximately 79,000 twenty-litre containers per month.
Does the HGS350A require special floor preparation?
At 1,500 kg, the HGS350A exceeds the floor loading tolerance of lightweight industrial floors. A floor loading assessment is recommended before installation — Korea Ever-Power provides the machine weight distribution and footprint data required for this assessment. Most reinforced concrete industrial floors (150 mm+ slab with standard industrial loading) accommodate the machine without modification.
What high-pressure air supply does the HGS350A need?
The HGS350A uses 3.0 MPa blowing air — the same pressure as all HGS models. However, 20-litre containers consume significantly more high-pressure air per cycle than smaller formats due to the larger cavity volume. A high-pressure compressor with greater flow capacity than a single small-model HGS installation is required. Korea Ever-Power provides compressor flow requirements at the quotation stage based on your target BPH and container specification.
How many operators does the HGS350A require?
The HGS350A is typically operated by one to two operators. At 250–300 BPH and the longer per-cycle time involved in handling 20-litre preforms and containers, a single trained operator can manage the full cycle. A second operator significantly increases throughput — with two operators sharing the cycle, output can approach the upper range of 400 BPH by eliminating idle time between cycles. For heavy-format 20-litre containers (full drums), two operators is recommended for safe container handling.
Why is the HGS350A so much heavier than the HGS280A?
The jump from 550 kg (HGS280A) to 1,500 kg (HGS350A) reflects three factors: the much larger machine frame required for the 2,270 mm length and 860 mm width; the heavier mold-locking structure needed to contain 3.0 MPa blow pressure across a 330–400 mm cavity (clamping force scales with cavity area); and the reinforced blow station required to handle the weight and inertia of 20-litre preforms during the stretching cycle. The HGS350A is a categorically different structural scale from the smaller HGS models.
Customer Reviews
"We produce 20-litre water jugs — 65,000 per month on two shifts with two operators. At 290 BPH sustained, the HGS350A covers our volume with room for growth. Korea Ever-Power's commissioning team spent three days on installation and heater tuning. The 550 mm stretch stroke is critical for our tall jug format — no other semi-automatic machine we found could match this specification."
HGS350A
"We produce 20-litre institutional cooking oil PET containers — 55,000 per month. The HGS350A handles our 370 mm wide-body drum format without issue. The 580×390 mm pillar space is genuinely required for this format — nothing smaller in the HGS range could accommodate our mold. The installation layout provided by Korea Ever-Power made facility preparation straightforward."
HGS350A
"Good machine. Important notes: floor assessment was necessary for our facility — we needed a floor anchor plate added before installation. High-pressure air consumption at 20 litres is significant — budget for a larger 3.0 MPa compressor than you might expect. Korea Ever-Power provided all specifications upfront and the project was still completed on schedule."
HGS350A
"We use the HGS350A for 20-litre agricultural chemical storage PET containers — new product line for our region. The HGS350A was the only semi-automatic machine we could find globally that reaches the 400 mm mold capacity we needed for our drum format. Two operators run 320 BPH on single-round format. The machine quality after 20 months of use is excellent."
HGS350A
"We were using pre-blown 20-litre containers purchased externally. Switching to the HGS350A reduced our per-unit cost by over 40% within 14 months. The machine runs 270–300 BPH on our standard 20-litre round water jug at 340 mm body diameter. We now supply containers to other local water bottlers as a second revenue stream."
HGS350A
Get a Quote for the HGS350A
Tell us your container volume and body diameter, neck finish, preform specification, required monthly output, and facility floor loading data. We will confirm HGS350A compatibility and provide machine, heater, and mold quotation within 2 business days.
Additional information
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