一批便宜HDPE副牌，差点让佛山一个厂赔了三个月
说个真事。佛山一家做中空吹塑容器的厂，去年图便宜进了一批低价HDPE副牌，说是"大厂过渡料"。上机第一天还行，第二天开始瓶口壁厚不均，第三天直接出现熔垂，整批吹出来的瓶子壁厚偏差超差，客户当场退货。一查货，既不是中石化的过渡料，也不是万华的波动批，根本是混了回料的杂牌。
HDPE副牌这个圈子，水不浅。正牌贵，回料不敢用，国产HDPE副牌本来是条稳妥路，可货源一杂，踩坑的人就多了。中石化、中石油、万华化学，这三家是国产HDPE的主流货源，到底哪家更稳、更对路子，这篇拆给你看。
国产HDPE格局：两桶油占大头，万华补位
HDPE（高密度聚乙烯）强度高、耐化学、防潮，做中空容器、管材、注塑周转箱、拉丝编织都离不开它。国内HDPE产能已超过600万吨/年，格局上中石化、中石油两家合计占了相当大份额。
中石化HDPE产量约280万至390万吨/年，齐鲁、扬子、茂名等基地都有装置，在吹塑中空容器和管材专用料上积累深；中石油HDPE依托大庆、独山子、兰州等西北基地，注塑和拉丝类产品成本有竞争力；万华化学依托烟台工业园一体化装置，HDPE产量约90万吨/年，是民营阵营里的代表。这三家，基本覆盖了国产HDPE副牌的主流货源。
HDPE副牌不是残次品，是指标小幅波动
先把HDPE副牌讲明白。它是同一装置同一牌号产品中，出厂检验个别指标——熔指、密度、拉伸强度、色相——小幅偏离正牌标准的部分。来源是装置开停车头尾料、牌号切换过渡料、工艺波动批次。它仍是原生聚合粒子，分子结构和正牌一致。
分清四层：正牌全指标达标、批次稳；副牌基材一致、个别指标略偏；回料是边角料再造粒，受过一次热历史；再生料是废旧塑料回收，性能波动大。HDPE副牌价格通常低于正牌，适合内件、配色件、一般结构件。关键是要分清"大厂波动批"和"混了回料的杂牌"，这才是佛山那个厂踩坑的根源。
中石化HDPE：管材吹塑的老牌户
中石化是国内HDPE产量规模领先的企业。代表牌号如HD5502W是注塑周转箱常用料，HD5401AA用于吹塑中空容器，60550系列做燃气管材。齐鲁、扬子的装置在吹塑和管材专用料上口碑扎实。
中石化HDPE副牌的特点，是装置老、牌号熟，副牌主要来自过渡料和波动批次，指标偏离幅度通常可控。对做中空容器、周转箱、一般管材的下游，中石化副牌在色相和熔指上相对可预期。要注意的是，HDPE副牌最怕熔指偏，吹塑和管材对熔指尤其敏感，进厂先测熔指和密度。
中石油HDPE：西北成本底子，拉丝注塑有优势
中石油HDPE依托大庆、独山子、兰州等基地，西北原料和能源成本有底子。代表牌号如HD6070是拉丝编织袋常用料，5502系列做注塑。
中石油HDPE副牌的特点，是西北装置开车率稳，副牌货源以拉丝和注塑过渡批次为主，价格带有竞争力。适合编织袋、普通注塑件、包装容器这类对成本敏感、对外观不苛求的场景。做拉丝和注塑，中石油副牌往往是算账算得过来的一档。
万华化学HDPE：民营一体化，装置新响应快
万华化学依托烟台工业园一体化装置，HDPE产量约90万吨/年，是民营阵营里的代表。全密度装置和HDPE装置配套，牌号覆盖吹塑、注塑、管材几个方向。
万华HDPE副牌的特点，是装置新、民营机制灵活，副牌集中在牌号切换过渡料。对做中空吹塑、一般注塑的下游，万华副牌响应快、批次配合度高。它不像两桶油那样牌号铺得开，但在几个主力牌号上，货源调度灵活。
国产HDPE副牌怎么验，别再花冤枉钱
一是先辨真货。要大厂原包、要随货检测单，别信口头说的"过渡料"。二是，先测熔指和密度。HDPE副牌容易波动的就是熔指，吹塑和管材对熔指敏感，进厂先打熔指和密度。三是，批次留样。单批副牌量小，留样备查，出问题能对上样。佛山那个厂的教训，就是没验货、没留样，出了问题连货是哪来的都说不清。
科隆仓库现货｜国产HDPE批次齐全
做国产HDPE副牌，批次齐不齐比单次价低更要紧。科隆仓库常备国产HDPE现货，主推中石化、中石油、万华化学三家品牌。
• 主推品牌：中石化、中石油、万华化学
• 主要牌号：HD5502W、HD5401AA、HD6070等常用牌号
• 包装规格：大包装、小包装都有
• 仓库现货：通常在2000-5000吨
• 小包副牌备货300-600吨、箱装副牌备货150-300吨、大包料/吨包料备货1500-4100吨
• 供应保障：批次留样可溯
大包料、吨包料适合连续生产的大厂，小包副牌和箱装副牌适合中小厂补单和试机，按需调度。
选型口诀加一个真实案例
国产HDPE副牌选型，记住三句话：先辨真货、先测熔指、批次留样。别光看报价，把真货和指标对上，省下来的才踏实。
接着说佛山那个厂。换了供货商后，他们改用中石化HD5401AA副牌，要求随货检测单，进厂先测熔指和密度，偏差在吹塑工艺窗口内。上机试模，瓶口壁厚不均和熔垂问题都没再出现，良率稳定在95%以上，单吨成本比正牌降了约500元。差别不在料多神，而在验了货、留了样。
A batch of cheap HDPE sub-brands almost cost a factory in Foshan three months of losses
Tell a true story. A factory in Foshan that makes hollow blow molding containers bought a batch of low-priced HDPE sub-brands last year for a cheap price, claiming they were "transition materials from big factories." On the first day of installation, it was fine, but on the second day, the bottle mouth wall thickness was uneven, and on the third day, melting sagging appeared, causing the entire batch to produce bottles with excessively poor wall thickness, and the customer returned the goods on the spot. Upon inspection, it turned out it wasn't Sinopec's transition material or Wanhua's fluctuating batch—it was just a mixed generic with recycled materials.
HDPE the sub-brand circle is not shallow. Genuine brands are expensive, so recycled materials are hesitant. Domestic HDPE secondary brands were originally a safe path, but with mixed supply, many people fell into traps. Sinopec, PetroChina, and Wanhua Chemical are the mainstream sources of domestic HDPE. Which one is more stable and the right approach? This article breaks it down for you.
Domestic HDPE Landscape: Two major oil companies dominate, Wanhua's replacement
HDPE (high-density polyethylene) is strong, chemically resistant, and moisture-resistant. It is essential for hollow containers, pipes, injection molding turnover boxes, and wire drawing and weaving. Domestic HDPE production capacity has exceeded 6 million tons per year, with Sinopec and PetroChina together accounting for a significant share.
Sinopec's HDPE output is about 2.8 to 3.9 million tons per year, with facilities in Qilu, Yangtze, Maoming, and other bases, deeply accumulating in blow molding hollow containers and pipe materials; PetroChina HDPE relies on bases in Daqing, Dushanzi, Lanzhou, and other northwest regions, with competitive costs for injection molding and wire drawing products; Wanhua Chemical, relying on the integrated unit in Yantai Industrial Park, produces about 900,000 tons of HDPE per year, representing the private sector. These three companies basically cover the mainstream sources of domestic HDPE sub-brands.
HDPE sub-brand is not defective products, but slight fluctuations in indicators
First, explain the HDPE sub-brand. It is the part of the same device and product brand, where individual factory inspection indicators—melt index, density, tensile strength, hue—slightly deviate from the official brand standards. Sources include starting and stopping the plant and tail materials, grade switching transition materials, and process fluctuation batches. They are still primary polymerized particles, with molecular structures consistent with genuine brands.
Distinguish the four layers: genuine brands meet all indicators and have stable batches; Sub-brand base materials are consistent, with some indicators slightly off-limits; Reclaimed material is leftover material re-pelletized, having undergone one heat history; Recycled material is recycled waste plastic, with significant performance fluctuations. HDPE sub-brands are usually priced lower than genuine brands, suitable for internal parts, color-matched parts, and general structural parts. The key is to distinguish between "large factory fluctuating batches" and "mixed recycled recyclable brands" — this is the root cause of the Foshan factory's pitfall.
Sinopec HDPE: A long-established pipe blow molding company
Sinopec is a leading domestic HDPE production company. Representative grades include HD5502W commonly used material for injection molding turnover boxes, HD5401AA used for blow molding hollow containers, and the 60550 series for gas pipes. Qilu and Yangzi units have a solid reputation for specialized materials for blow molding and pipe materials. The characteristics of
Sinopec HDPE sub-brands are that the equipment is old and the grades are familiar; sub-brands mainly come from transition materials and fluctuating batches, and the deviation margins of indicators are usually controllable. For downstream products of hollow containers, turnover boxes, and general pipes, Sinopec's sub-brands are relatively predictable in terms of hue and melt index. It should be noted that HDPE sub-brands are most prone to melt index deviation; blow molding and pipes are especially sensitive to melt index, so the melt index and density are measured before entering the factory.
PetroChina HDPE: Cost base in Northwest China, with advantages in brushed injection molding
PetroChina HDPE relies on bases in Daqing, Dushanzi, Lanzhou, etc., with solid raw material and energy costs in the northwest. Representative grades such as HD6070 are commonly used for brushed woven bags, and the 5502 series is used for injection molding. The characteristic of
PetroChina HDPE sub-brands is their stable operating rate in the northwest plant, with sub-brand supply mainly being brushed and injection-molded transition batches, with competitive prices. Suitable for scenarios where woven bags, ordinary injection molded parts, and packaging containers are cost-sensitive and not demanding about appearance. For brushing and injection molding, PetroChina's sub-brand is often a straightforward and reliable choice.
Wanhua Chemical HDPE: Integrated private sector, fast response to new units
Wanhua Chemical relies on the Yantai Industrial Park integrated unit, with an HDPE output of about 900,000 tons per year, making it a representative among private companies. The full-density unit is paired with HDPE units, with grades covering blow molding, injection molding, and pipe materials. The characteristics of
Wanhua HDPE sub-brands are new equipment and flexible private mechanisms, with sub-brands focused on grade switching transition materials. For downstream companies engaged in hollow blow molding and general injection molding, Wanhua's sub-brand responds quickly and has high batch compatibility. Unlike the two oil giants, it does not have a wide distribution of grades, but for several main brands, supply scheduling is flexible.
How to inspect domestic HDPE secondary brands? Don't waste money anymore
First, identify genuine products first. Get the original packaging from a big manufacturer and the inspection report with the goods; don't trust the so-called "transition materials." Second, first test the melt fingers and density. The melt fingers on HDPE secondary brands are prone to fluctuation; blow molding and pipes are sensitive to melt fingers, so when entering the factory, test the melt fingers and density. Third, keep samples for batches. If the sub-brand batch has a small quantity, keep samples for inspection, and if problems arise, they can be matched with the samples. The lesson from the Foshan factory was that no inspection or sample retention meant that if something went wrong, you couldn't even tell where the goods came from.
Cologne warehouse stock | Complete domestic HDPE batches
Domestic HDPE sub-brand; batch uniformity is more important than low price per batch. Cologne warehouse always stocks domestic HDPE stock, mainly promoting Sinopec, PetroChina, and Wanhua Chemical brands.
• Main Brands: Sinopec, PetroChina, Wanhua Chemical
• Main Grades: HD5502W, HD5401AA, HD6070 and other commonly used grades
• Packaging Specifications: Both large and small packages available
• Warehouse Stock: Usually 2000-5000 tons
• Small sub-brand stock 300-600 tons, boxed sub-brand stock 150-300 tons, large package/ton sub-brand stock 1500-4100 tons
• Supply Guarantee: Batch samples traceable
Large and ton sub-packs suitable for large factories with continuous production; small sub-brand and boxed sub-brand are suitable for small and medium factories to supplement orders and trial machines, with on-demand scheduling.
Selection Mnemonic, a real case
Domestic HDPE secondary brand selection, remember these three points: first identify the genuine product, test the melt index first, and keep samples for the batch. Don't just look at the quote; match the genuine product with the indicators, and you'll be more confident with the savings.
Next, let's talk about the factory in Foshan. After switching suppliers, they switched to Sinopec HD5401AA subbrand, requiring inspection forms with the goods, and testing the melt index and density before entering the factory, with deviations occurring within the blow molding process window. During machine mold trials, uneven bottle wall thickness and sagging issues disappeared, yield remained stable above 95%, and the cost per ton was about 500 yuan lower than the genuine brand. The difference wasn't in the quantity of materials, but in inspecting the goods and retaining samples
