PE多少钱一公斤？价差金句，聚乙烯的价格藏在密度里
PE多少钱一公斤？
这个问题一搜，从八块一公斤到十五块一公斤，报价差得比密度范围还多。有人说我买的九块的中石化LLDPE用得挺好，有人说我买的十三块的陶氏HDPE才叫稳定。到底差在哪？
说实话，问PE多少钱一公斤的人，大概率还没搞懂PE这东西不是一个料——HDPE、LDPE、LLDPE、MDPE、UHMWPE，每个分支价格都不一样。你拿LDPE的价和HDPE比，那不叫比价，叫被忽悠。
一、主流牌号报价（外企+中企）
先把市面上走量的牌号和参考价摆出来。以下为近期市场参考价，实时价格以当日询价为准。
中石化（中企大厂）
茂名HHM5502LW，HDPE吹塑级，参考价约11元/公斤。高刚性耐低温，吹塑瓶、桶。
茂名2426H，LLDPE薄膜级，参考价约9元/公斤。高透明，薄膜、包装。
2420H，LDPE薄膜级，参考价约9-10元/公斤。半透明，通用薄膜。
齐鲁DNDB7149U，HDPE滚塑级，参考价约9元/公斤。滚塑制品、储罐。
独山子石化（中企大厂）
DMDA-8008，HDPE注塑级，参考价约10-11元/公斤。高密度，注塑制品、周转箱。
陶氏（Dow，美国）
DGDK-3364，HDPE电线电缆级，参考价约13元/公斤。热稳定，电缆护套。
2036P，LLDPE挤出级，参考价约10-12元/公斤。高抗冲，薄膜、色母料。
722，LDPE涂覆级，参考价约15元/公斤。涂覆应用、复合膜。
埃克森美孚（ExxonMobil，美国）
6101XR，LLDPE耐热级，参考价约9-11元/公斤。瓶盖、容器、食品包装。
利安德巴塞尔（LyondellBasell）
M5370，HDPE增强级，参考价约13元/公斤。高强度，注塑级。
一句话总结：通用级8-10块，薄膜级9-12块，吹塑/注塑级10-13块，电线电缆/涂覆级12-15块，超高分子量20-50块。你要的是啥密度和用途，决定了你该在哪一档选。
二、同是PE，价差凭什么这么大
PE的价格差，主要藏在四个地方。
第一，密度不同。HDPE密度高、刚性好，价格适中；LDPE密度低、柔软，价格略高；LLDPE介于两者之间，性价比高。密度是PE的核心指标。
第二，熔指不同。高熔指适合注塑，加工效率高，价格也贵；低熔指适合挤出吹塑，价格适中。熔指决定了加工方式。
第三，用途不同。通用级便宜，薄膜级适中，电线电缆级贵，涂覆级更贵，超高分子量最贵。用途决定了性能要求和价格。
第四，品牌和产地。进口溢价高但批次稳定，国产性价比高但质量参差。同样是HDPE，陶氏比中石化贵20-30%，贵的是品控和研发。
三、采购避坑：别让密度骗了你
我见过太多采购，比价比到最后选了最便宜的八块的，然后做出来的制品强度不够、薄膜易破、客户退货，一次损失够买半年的好料。
PE采购这行，水比你想的深。三个坑必须绕开：
第一，看密度和熔指不看牌号。同一个牌号不同批次性能可能波动，拿到料先测密度和熔指，和COA对得上再用。别听销售说"差不多"，差不多就是差很多。
第二，警惕以次充好。有些贸易商拿回收料当新料卖，拿LDPE当HDPE卖。要COA、要物性报告、要原厂包装，三证合一才敢用。
第三，别只比单价，算综合成本。A料单价8块，做出来次品率5%；B料单价12块，次品率1%。算到每件制品上，B料反而更便宜。
四、标准牌号满足不了？看看改性方案
如果你发现标准牌号怎么选都差点意思——比如要阻燃又要高抗冲、要增强又要耐候、要低成本又要高性能——那不是PE的问题，是你需要的不是标准PE，是改性PE。
这时候可以看看宁波科隆新材目前在做的高性能改性PE方案，玻纤增强、阻燃、抗静电、耐候这些方向都有对应牌号在做。有特殊需求的可以私信要一份改性PE的报价参考，比自己买基料再加助剂调试，省的不只是钱，还有试错的时间。
说白了，标准料是大锅饭，改性料是定制菜。你的制品要求越高，越需要定制。
五、常用牌号，私信给你当日报价
上面的价格都是参考价，PE行情一天一个样，原油、乙烯、汇率都在动。
如果你需要中石化、独山子、陶氏、埃克森美孚这些品牌的具体牌号当日报价，私信我，发你一份实时价格表。不绕弯子，报实数。
写在最后
买PE这事儿，八块的和十五的，差的不是七块。
单价是门槛，选对密度和用途才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出合格制品的方案。把账算到每件制品上，再加上次品退货损失，你才知道谁真便宜谁真贵。
你在PE采购上踩过什么坑？是强度不够还是薄膜易破？评论区聊聊，点赞最高的三位，送一份PE主流牌号选型对照表。
HDPE和LDPE有什么区别
PE密度怎么选
PE和PP有什么区别
PE改性料厂家怎么选
PE注塑常见问题及解决
How much is PE per kilogram?
PE is not one material: different grades, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Sinopec
approx. CNY 11/kg. high-rigidity low-temperature-resistant; blow molding bottles; drums.
approx. CNY 9/kg. high-transparency; film; packaging.
2420H, approx. CNY 9-10/kg. general film.
approx. CNY 9/kg.
Dushanzi Petrochemical
DMDA-8008, approx. CNY 10-11/kg. high-density; crates.
Dow
DGDK-3364, approx. CNY 13/kg. heat-stabilized; cable jacketing.
2036P, approx. CNY 10-12/kg. high impact; film.
722, approx. CNY 15/kg.
ExxonMobil
6101XR, approx. CNY 9-11/kg. containers; food packaging.
LyondellBasell
M5370, approx. CNY 13/kg. high-strength; injection.
2. Why prices differ so much
Four factors: (1) density — lower levels are cheaper; higher levels give better performance but cost more. (2) melt flow index — premium grades need special formulations and cost more. (3) application — special applications need special formulations or certification and cost more. (4) Brand and origin — imports carry a premium but offer batch stability; for the same grade, imports cost 30-50% more than domestic, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often fails on performance and triggers customer returns. Three traps to avoid:
First, test density and melt flow index against the COA instead of trusting the grade name — performance of the same grade can fluctuate between batches. Second, watch out for substitution fraud: some traders pass off cheaper or recycled material as the real thing; demand the COA, a test report and original packaging before use. Third, don't compare unit price alone — calculate total cost per finished part, including rejected-goods loss; a higher-priced grade with a 1% defect rate is often cheaper than a low-priced one with 5% rejects.
4. Standard grades not enough? Consider modified compounds
If standard grades always fall short — for example you need flame retardancy AND high transparency, reinforcement AND chemical resistance, or low cost AND food grade — you don't need standard PE, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PE solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PE quote reference — it saves not only money but also trial-and-error time.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order. The higher your requirements, the more you need customization.
5. Popular grades — same-day quotes via message
All prices above are references; PE prices change daily as feedstocks and exchange rates move. If you need same-day quotes for specific grades, message us and we will send a live price sheet. No beating around the bush — real numbers.
Final words
Unit price is the threshold; choosing the right grade and performance is the baseline. Do the math per finished part, add rejected-goods loss, and you will know who is truly cheap and who is truly expensive.
What pitfalls have you hit when buying this material? The three most-liked comments will receive a grade selection guide.
