

What is high density polyethylene (HDPE)?
High Density Polyethylene (HDPE) is a cost-effective thermoplastic with a linear structure. It has no or low degree of branching. It is flexible, translucent/waxy, and weather resistant.HDPE is more rigid due to high crystallinity (> 90%). This also means it is less transparent than LDPE & LLDPE versions. HDPE also displays toughness at low temperatures.
How is HDPE manufactured?
HDPE is manufactured at low temperatures (70-300°C) and pressure (10-80 bar). It is derived from:Two major techniques to produce HDPE: Slurry Polymerization or Gas Phase Polymerization.
What are the disadvantages of HDPE?
- Susceptible to stress cracking
- Lower stiffness than polypropylene
- High mold shrinkage
- Poor UV- and low heat resistance
- High-frequency welding and joining impossible
- Packaging Applications - HDPE is used in several packaging applications including crates, trays, bottles for milk and fruit juices, caps for food packaging, jerry cans, drums, industrial bulk containers etc. In such applications HDPE provides the end product a reasonable impact strength.
- Consumer Goods - Low cost and easy processability make HDPE a material of choice in several household/consumer goods like garbage containers, housewares, ice boxes, toys etc.
- Fibers and Textiles - Thanks to its high tensile strength, HDPE is widely used for agricultural applications, such as in ropes, fishing and sport nets, nets as well as industrial and decorative fabrics.
- Other applications of HDPE include pipes and fittings (pipes for gas, water, sewage, drainage, sea outfalls, industrial application, cable protection, steel pipe coating, large inspection chambers and manholes for pipe sewage etc.) due to its excellent resistance to chemical and hydrolysis, automotive - fuel tanks, wiring & cables - sheeting of energy, telecommunication cables
Performance of the project | Test condition [condition] | The test method | The test data | The data unit | |
Basic performance | Density mass index | GB/T 1033 | 0.948±0.002 | g/cm3 | |
Density test results | GB/T 1033 | 0.948 | g/cm4 | ||
Melt flow rate mass index | 190ºC/5.0kg | GB/T 3682 | 0.23±0.03 | g/10min | |
Melt flow rate test results | GB/T 3682 | 0.25 | g/10min | ||
Melt flow rate mass index | 190ºC/21.6kg | GB/T 3682 | 6.2±1.5 | g/10min | |
Melt flow rate test results | GB/T 3682 | 6.4 | g/10min | ||
Mechanical properties of | Tensile yield strength quality index | GB/T 1040 | ≥23 | MPa | |
Test results of tensile yield strength | GB/T 1040 | 27.6 | MPa | ||
Elongation at break quality index | GB/T 1040 | ≥600 | % | ||
Test results of elongation at break | GB/T 1040 | 804 | % | ||
Quality index of impact strength of simply supported beam | GB/T 1043 | ≥25 | KJ/m2 | ||
Test results of impact strength of simply supported beam | GB/T 1043 | 26.7 | KJ/m2 | ||
Other properties | Volatile matter quality index | GB/T 15658 1 | ≤350 | mg/kg | |
Volatile test results | GB/T 15658 1 | Did not check out | mg/kg | ||
Biochemical property | Cleanliness (color granule) quality index | SH/T 1541 | ≤20 | grain/kg | |
Cleanliness (color particle) test results | SH/T 1541 | 0 | grain/kg | ||
Cleanliness (impurities) quality index | SH/T 1541 | ≤60 | grain/kg | ||
Cleanliness (impurities) test results | SH/T 1541 | 0 | grain/kg |




25kgs net weight in PP woven or PE plastic bag about 20 tons for 20" container
Hebei Aojin Import and Export Co., Ltd.. is a comprehensive enterprise integrating industry and trade.
The main products are Graphite electrode,Petroleum coke ,copy paper and other plastic raw materials (ldpe, hdpe, lldpe, pvc, pva, pbt, eva abs, eps, gpps, hips, pc Pet, etc.).
We will strictly check every link from raw materials to finished products to ensure the quality and stability of products. We also have our own professional design team, which can meet the needs of different levels of customers. All our products meet international quality standards and are well received in different markets around the world. We have a professional foreign trade team to expand overseas markets, can timely and properly deal with the problems raised by customers.
1. who are we?
We are headquartered in Hebei, China and have been selling our products to the domestic market (90.00%), North America (3.00%), Southeast Asia (3.00%), Oceania (00.00%), Middle East (00.00%), East Asia (00.00%), and South Asia (00.00%) since 2016. We have a total of about 11-50 people in our office.
2. How do we ensure the quality?
We do sample pre-production before mass production;
Final inspection must be done before shipment;
3. What can you buy from us?
Biodegradable materials, plastic raw materials, thermoplastic elastomer materials, additives, steel. 4.
4. Why buy from us instead of other suppliers?
Our strong investment background and purchasing channels
Professional and experienced purchasing and sales team
5. What services can we provide?
Accepted delivery terms: FOB, CIF, CIF, ex works;
Accepted payment currencies: USD, EUR, HKD, RMB;
Accepted payment terms: T/T,L/C T/T, L/C;
Languages: English, Chinese
6.Are you a manufacturer or a trading company?
We are a manufacturer located in Hebei Province.
7.Can I get some samples before I place an order?
Yes, we can provide free samples, but you will pay the freight.
8. How long will it take to get a sample?
7-10 days for general products, 30-40 days for customized products. Depends on production arrangements.
9.What documents do you provide?
Usually we provide commercial invoice, packing list, bill of lading, COA, health certificate. If your market has any special requirements, please let us know.