PEX多少钱一公斤？
这个问题一搜，从十二块一公斤到二十五块一公斤，报价差得比交联度还多。有人说我买的十二的国产通用用得挺好，有人说我买的二十五的进口高端才叫高交联。到底差在哪？
说实话，问PEX多少钱一公斤的人，大概率还没搞懂PEX这东西不是一个料——PEX-a、PEX-b、PEX-c、PEX-d，每个分支价格都不一样。你拿PEX-b的价和PEX-a比，那不叫比价，叫被忽悠。
PEX就是交联聚乙烯，通过交联改性提高耐热性和强度，常用于地暖管、给水管、燃气管、电线电缆、汽车管路。
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。
进口PEX（外企大厂）
PEX-b通用级，参考价约15-22元/公斤。地暖管、给水管、电线电缆。
PEX-a过氧化物级，参考价约18-25元/公斤。高端地暖管、燃气管、汽车管路。
PEX-c辐照级，参考价约20-25元/公斤。高端应用、医疗、特殊管路。
国产PEX（中企大厂）
PEX-b通用级，参考价约12-18元/公斤。性价比高，地暖管、给水管、电线电缆。
PEX-a过氧化物级，参考价约14-20元/公斤。高端地暖管、燃气管、汽车管路。
PEX-c辐照级，参考价约16-22元/公斤。高端应用、医疗、特殊管路。
一句话总结：国产PEX-b 12-18块，国产PEX-a/c 14-22块，进口PEX-b 15-22块，进口PEX-a/c 18-25块。你要的是啥交联度和工艺，决定了你该在哪一档选。
二、同是PEX，价差凭什么这么大
PEX的价格差，主要藏在四个地方。
第一，交联工艺不同。PEX-b硅烷交联便宜，PEX-a过氧化物交联适中，PEX-c辐照交联贵。工艺越复杂，设备成本越高，价格越贵。
第二，交联度不同。低交联度便宜，高交联度贵。交联度越高，耐热性和强度越好，但加工难度越大。
第三，用途不同。通用级便宜，医用/燃气级贵。特殊用途需要特殊认证，价格更高。
第四，品牌和产地。进口溢价高但批次稳定，国产性价比高但牌号少。同样是PEX-a级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让交联度骗了你
我见过太多采购，比价比到最后选了最便宜的十二的，然后做出来的管材耐热差、交联度不够、客户退货，一次损失够买半年的好料。
PEX采购这行，水比你想的深。三个坑必须绕开：
第一，看交联度和热变形温度不看牌号。同一个牌号不同批次性能可能波动，拿到料先测交联度和热变形温度，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PE当PEX卖，拿低交联度当高交联度卖。要COA、要交联度检测、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12块，做出来管材次品率5%；B料单价18块，次品率1%。算到每米管材上，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——比如要高交联又要易加工、要耐高温又要柔韧、要低成本又要医用级——那不是PEX的问题，是你需要的不是标准PEX，是改性PEX。
这时候可以看看宁波科隆新材目前在做的高性能改性PEX方案，增韧、增强、耐候、阻燃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PEX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，PEX行情一天一个样，乙烯、硅烷、过氧化物、辐照成本、汇率都在动。
如果你需要进口、国产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PEX这事儿，十二的和二十五的，差的不是十三。
单价是门槛，选对交联度和工艺才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出耐高温地暖管的方案。把账算到每米管材上，再加上次品退货损失，你才知道谁真便宜谁真贵。
你在PEX采购上踩过什么坑？是耐热差还是交联度不够？评论区聊聊，点赞最高的三位，送一份PEX主流牌号选型对照表。
PEX和PE有什么区别
PEX交联度怎么选
PEX-a和PEX-b有什么区别
PEX改性料厂家怎么选
PEX管材常见问题及解决
How much is PEX per kilogram?
PEX 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.
Imported PEX
approx. CNY 15-22/kg. water supply pipe; wire and cable.
approx. CNY 18-25/kg.
approx. CNY 20-25/kg. premium applications.
Domestic PEX
approx. CNY 12-18/kg. water supply pipe; wire and cable.
approx. CNY 14-20/kg.
approx. CNY 16-22/kg. premium applications.
2. Why prices differ so much
Four factors: (1) composition — lower levels are cheaper; higher levels give better performance but cost more. (2) grade level — 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 key properties 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 PEX, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PEX solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PEX 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; PEX 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.
