[ Products · Laminates ]
Insulation Laminate Sheet
Epoxy glass, phenolic paper and silicone glass laminates — sheet, rod and cut parts.
Laminate sheet is the rigid insulation of the catalogue: terminal boards, phase barriers, coil support, wedges and machined insulating parts. It is specified by resin system and reinforcement rather than by a single grade number, though grade designations remain the common shorthand.
Epoxy glass laminates (the 3240 / G10 / FR4 family) dominate because they combine high mechanical strength with good dielectric performance and machine cleanly. Phenolic paper laminates are the lower-cost option for mechanically undemanding parts, and silicone glass laminates cover the high temperature range.
Note that the Chinese GB grade designations and the NEMA and IEC ones are related but not interchangeable. If your drawing calls out a NEMA grade, tell us — matching to the equivalent GB grade is straightforward, but assuming equivalence without checking is a common source of dispute.
[ Selection ]
How to choose within this category
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Resin system sets the temperature
Phenolic, epoxy and silicone systems cover ascending temperature ranges at ascending cost. Start here.
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Grade equivalence needs checking, not assuming
GB 3240, NEMA G10 and IEC EPGC201 are closely related but the test methods and tolerances differ. Send the drawing callout rather than the grade alone.
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Sheet or machined part
We can supply full sheet or parts cut and drilled to drawing. For small parts in quantity, machining here usually costs less than shipping sheet and machining locally.
Typical applications
[ Buying questions ]
Ordering laminates from China
Are you a manufacturer or a trading company for laminates?
Both. Material comes from our production partners in Xuchang and Jiaozuo, which gives factory-level pricing and the ability to verify what you are buying. Because we are not tied to one line, we can also tell you when something is better made elsewhere instead of selling you what we happen to run.
What is the minimum order quantity?
It depends on the item and whether it is a stock grade or made to your width. Small quantities across several materials usually consolidate into a workable shipment even where no single line would clear a factory minimum. Send your list and we will tell you what is workable.
Can we get samples before ordering?
Yes, and for a first order we would encourage it. Sample material is generally free; freight arrangement varies by destination and we will confirm which applies when you enquire.
Can you supply cut or slit to our dimensions?
Yes. Slitting rolls to working width and cutting sheet to drawing are both standard. Tell us the dimensions and, for rolls, your preferred core and roll diameter so the material fits your equipment.
What are the payment terms and lead time?
For a first order, terms are usually a deposit with the balance against shipping documents. Lead time depends on whether items are stock grades or made to your specification — we will give a date against your actual list rather than a general figure.
Which ports do you ship from, and can you quote DDP?
Most shipments go through Qingdao or Shanghai. We can quote FOB, CIF or DDP depending on how much of the import side you want to handle. Tell us your destination port and we will confirm routing and a realistic door-to-door time.
Do you provide test reports or certification?
What is available varies by material and production source. Rather than claim blanket coverage, tell us what your application or your customer requires and we will confirm what can be provided for that specific material before you order.
Can this category ship together with other materials?
Yes — mixed containers across categories are standard for us rather than an exception, and for most transformer and motor builders it is the sensible way to buy.
Tell us what you need to buy
Send the grades, thicknesses and quantities — or just describe the machine you build. We reply within one working day, and we will tell you plainly if something is outside what we can supply well.