PVC多少钱一公斤？新手避坑，糊树脂和通用树脂不是一回事
PVC多少钱一公斤？
这个问题一搜，从五块一公斤到九块一公斤，报价差得比聚合度还多。有人说我买的五块四的中泰SG-5用得挺好，有人说我买的九块的信越TK700才叫稳定。到底差在哪？
说实话，问PVC多少钱一公斤的人，大概率还没搞懂PVC这东西不是一个料——通用树脂（SG-3/SG-5/SG-7/SG-8）、糊树脂、高聚合度、消光、医用级，每个分支价格都不一样。你拿通用树脂的价和糊树脂比，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。
信越（Shin-Etsu）
TK700，糊树脂，参考价约9元/公斤。日本信越产，高糊粘度，人造革、手套、壁纸。
TK1000，通用树脂，参考价约6-7元/公斤。中聚合度，管材、型材、板材。
LG化学
TL1000，通用树脂SG-5级，参考价约6-7元/公斤。韩国LG产，性价比高，管材、型材。
台塑（Formosa）
S-65，通用树脂，参考价约6-7元/公斤。台塑宁波产，中聚合度，管材、型材、板材。
S-70，糊树脂，参考价约8-9元/公斤。高糊粘度，人造革、手套。
S-85，高聚合度，参考价约8-9元/公斤。高弹性，软管、密封条。
中泰化学（中企大厂）
SG-5，通用树脂，参考价约5-6元/公斤。国产主力，性价比高，管材、型材、板材。
SG-3，高聚合度，参考价约5-6元/公斤。软制品、薄膜、软管。
一句话总结：通用树脂5-7块，糊树脂8-10块，高聚合度7-9块，医用/特殊级10-15块。你要的是啥聚合度和用途，决定了你该在哪一档选。
二、同是PVC，价差凭什么这么大
PVC的价格差，主要藏在四个地方。
第一，聚合度不同。聚合度越高，分子量越大，强度和弹性越好，价格也越贵。SG-3（高聚合度）比SG-8（低聚合度）贵。
第二，树脂类型不同。通用树脂便宜，糊树脂贵很多。糊树脂用于糊树脂加工工艺，和通用树脂完全不是一个东西。
第三，功能改性不同。医用级、食品级、消光、抗静电——这些都要加钱。你买的不是纯PVC，是加了料的PVC方案。
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。同样是糊树脂，信越比中泰贵50%，贵的是品控和研发。
三、采购避坑：别让聚合度骗了你
我见过太多采购，比价比到最后选了最便宜的五块的，然后做出来的制品强度不够、热稳定性差、客户退货，一次损失够买半年的好料。
PVC采购这行，水比你想的深。三个坑必须绕开：
第一，看聚合度和粘数不看牌号。同一个牌号不同批次聚合度可能波动，拿到料先测粘数，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。有些贸易商拿通用树脂当糊树脂卖，拿低聚合度当高聚合度卖。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5块，做出来次品率5%；B料单价7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——比如要阻燃又要高流动、要增强又要耐候、要医用级又要低成本——那不是PVC的问题，是你需要的不是标准PVC，是改性PVC。
这时候可以看看宁波科隆新材目前在做的高性能改性PVC方案，玻纤增强、阻燃、耐候、抗静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PVC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，PVC行情一天一个样，原油、乙烯、氯气、汇率都在动。
如果你需要信越、LG、台塑、中泰化学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PVC这事儿，五块的和九块的，差的不是四块。
单价是门槛，选对聚合度和树脂类型才是底线。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PVC采购上踩过什么坑？是聚合度不对还是以次充好？评论区聊聊，点赞最高的三位，送一份PVC主流牌号选型对照表。
PVC和PE有什么区别
PVC聚合度怎么选
PVC糊树脂和通用树脂区别
PVC改性料厂家怎么选
PVC注塑常见问题及解决
How much is PVC per kilogram?
PVC is not one material: medical, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
PVC
TK700, approx. CNY 9/kg.
TK1000, approx. CNY 6-7/kg. pipe; profiles; sheet.
LG Chem
TL1000, approx. CNY 6-7/kg. pipe; profiles.
Formosa Plastics
S-65, approx. CNY 6-7/kg. pipe; profiles; sheet.
S-70, approx. CNY 8-9/kg.
S-85, approx. CNY 8-9/kg. high-elasticity; weather strips.
PVC
SG-5, approx. CNY 5-6/kg. pipe; profiles; sheet.
SG-3, approx. CNY 5-6/kg. film.
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) functional modification — 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 PVC, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PVC solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PVC 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; PVC 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.
