MDPE多少钱一公斤?
这个问题一搜,从九块一公斤到二十块一公斤,报价差得比密度还多。有人说我买的九的国产通用用得挺好,有人说我买的二十的进口高端才叫高性能。到底差在哪?
说实话,问MDPE多少钱一公斤的人,大概率还没搞懂MDPE这东西不是一个料——通用级、管材级、薄膜级、注塑级、电缆级,每个分支价格都不一样。你拿通用级的价和管材级比,那不叫比价,叫被忽悠。
MDPE就是中密度聚乙烯,密度0.926-0.940g/cm³,介于LDPE和HDPE之间,韧性好、耐应力开裂,常用于管材、薄膜、注塑制品、电缆护套、包装。
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MDPE(外企大厂)
通用级,参考价约12-17元/公斤。注塑制品、包装、一般用途。
管材级,参考价约14-19元/公斤。燃气管、给水管、工业管材。
薄膜级,参考价约13-18元/公斤。包装薄膜、农用薄膜、工业薄膜。
国产MDPE(中企大厂)
通用级,参考价约9-14元/公斤。性价比高,注塑制品、包装、一般用途。
管材级,参考价约11-16元/公斤。燃气管、给水管、工业管材。
电缆级,参考价约10-15元/公斤。电缆护套、绝缘层、通信电缆。
一句话总结:国产通用9-14块,国产管材/电缆10-16块,进口通用12-17块,进口管材/薄膜13-19块。你要的是啥密度和用途,决定了你该在哪一档选。
二、同是MDPE,价差凭什么这么大
MDPE的价格差,主要藏在四个地方。
第一,密度不同。密度0.926左右便宜,密度0.940以上高强度但贵。密度越高,强度和刚性越好,但韧性略降。
第二,熔融指数不同。低熔融指数便宜,高熔融指数贵。高熔融指数易加工,但强度略降。
第三,用途不同。通用级便宜,管材/电缆级贵。特殊用途需要特殊配方,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。同样是管材级,进口比国产贵30-50%,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九的,然后做出来的管材耐应力开裂差、爆管、客户退货,一次损失够买半年的好料。
MDPE采购这行,水比你想的深。三个坑必须绕开:
第一,看密度和熔融指数不看牌号。同一个牌号不同批次性能可能波动,拿到料先测密度和熔融指数,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LDPE当MDPE卖,拿低密度当高密度卖。要COA、要密度检测、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9块,做出来管材次品率5%;B料单价14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——比如要高强度又要高韧性、要耐应力开裂又要易加工、要低成本又要阻燃级——那不是MDPE的问题,是你需要的不是标准MDPE,是改性MDPE。
这时候可以看看宁波科隆新材目前在做的高性能改性MDPE方案,玻纤增强、阻燃、耐候、导电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MDPE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,MDPE行情一天一个样,乙烯、催化剂、共聚单体、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MDPE这事儿,九的和二十的,差的不是十一。
单价是门槛,选对密度和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料,是一公斤能做出耐应力开裂管材的方案。把账算到每米管材上,再加上爆管退货损失,你才知道谁真便宜谁真贵。
你在MDPE采购上踩过什么坑?是耐应力开裂差还是爆管?评论区聊聊,点赞最高的三位,送一份MDPE主流牌号选型对照表。
MDPE和HDPE有什么区别
MDPE密度怎么选
MDPE和LDPE有什么区别
MDPE改性料厂家怎么选
MDPE加工常见问题及解决
How much is MDPE per kilogram?
Quotes range from CNY 9/kg to CNY 20/kg. MDPE (medium-density polyethylene, density 0.926-0.940 g/cm3) sits between LDPE and HDPE; it offers good toughness and stress-crack resistance, and is used in pipe, film, injection parts, cable jacketing and packaging.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported MDPE (overseas majors)
General-purpose, approx. CNY 12-17/kg. Injection parts, packaging, general use.
Pipe grade, approx. CNY 14-19/kg. Gas pipe, water supply pipe, industrial pipe.
Film grade, approx. CNY 13-18/kg. Packaging film, agricultural film, industrial film.
Domestic MDPE (Chinese majors)
General-purpose, approx. CNY 9-14/kg. Cost-effective; injection parts, packaging, general use.
Pipe grade, approx. CNY 11-16/kg. Gas pipe, water supply pipe, industrial pipe.
Cable grade, approx. CNY 10-15/kg. Cable jacketing, insulation, telecom cable.
In short: domestic general CNY 9-14, domestic pipe/cable CNY 10-16, imported general CNY 12-17, imported pipe/film CNY 13-19.
2. Why prices differ so much
Four factors: (1) Density — about 0.926 is cheap; above 0.940 gives higher strength and rigidity but slightly lower toughness. (2) Melt flow index — high MFI processes easily but lowers strength slightly. (3) Application — general is cheap; pipe/cable grades need special formulations. (4) Brand and origin — for the same pipe grade, imports cost 30-50% more, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often means pipe with poor stress-crack resistance and burst failures, causing returns. Three traps to avoid:
First, test density and MFI against the COA instead of trusting the grade name. Second, watch for substitution: some traders sell LDPE as MDPE or low-density as high-density; demand the COA, a density test and original packaging. Third, calculate total cost per meter of pipe: A at CNY 9/kg with a 5% defect rate vs. B at CNY 14/kg with 1% — B is cheaper.
4. Standard grades not enough? Consider modified compounds
If you need high strength AND high toughness, stress-crack resistance AND easy processing — you need modified MDPE. Ningbo Kolong New Materials is developing high-performance modified MDPE grades covering GF reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified MDPE quote reference.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order.
5. Same-day quotes via message
MDPE prices change daily — ethylene, catalysts, comonomers and exchange rates all move. Message us for same-day quotes; real numbers.
Final words
The gap between CNY 9 and CNY 20 is not CNY 11. Unit price is the threshold; choosing the right density and performance is the baseline. You are buying a solution for making stress-crack-resistant pipe. Do the math per meter, add burst-failure returns, and you will know who is truly cheap.
What pitfalls have you hit buying MDPE — poor stress-crack resistance or pipe bursts? The three most-liked comments will receive a MDPE grade selection guide.