Written quotation, written lead time
Price, lead time and payment terms are always stated in a dated quotation; a figure given by phone does not change later and stays valid for the period in the quotation.
Since 2019
The supply partner of plastics manufacturers
Forbest Mühendislik Plastikleri San. ve Tic. Ltd. Şti. was founded in İstanbul at the beginning of 2019 by Kerem Varnalı. The products in our portfolio are imported from overseas producers; our import, sales, technical support, warehouse and loading, finance and accounting departments work under one roof. Our technical support team stands by your application from identifying the raw material you need to the processing parameters. Our aim is to make quality the standard and add value to our industry and our country.
Representative image- 2019
- supplying raw materials since
- 6
- product groups
- 81
- product codes, portfolio wider than the list
- 2
- locations: İkitelli OSB office, Arnavutköy warehouse
How do we work?
We hold to four principles and state all four at the first meeting. They are not slogans but a description of how the quotation is written and how shipping is done; if we fall short on one, tell us and we will fix it.
The right material is not the most expensive one
The technical team proposes the most economical family that meets your application; if a high-performance plastic is not needed, it says so. The measure of a sale is the life of the part.
No product without a data sheet
The supplier's TDS and SDS come with every quotation; equivalent-grade comparison is made on the sheet values, not on the code.
Lot tracking and continuity
Every pallet carries the product code and lot number; the next order continues with the same lot or the same sheet, and any change is announced in advance.
Which teams are there?
- Import and raw-material sourcing
- Uninterrupted supply across six product groups through regular imports from overseas producers. Details
- Technical support and material selection
- We define candidate materials, reinforcement levels and processing conditions together for your application. Details
- Warehousing, loading and logistics
- Palletised shipping from the Arnavutköy warehouse; 25 kg bags and big-bags; delivery throughout Türkiye. Details
- Sales and quotation process
- Tell us the product code, quantity and process; we reply with a quotation, lead time and data sheet. Details
- Finance and accounting
- Quotations, invoicing and payment terms handled in one place; orderly accounts and documents.
Where are we?
Head office
İkitelli OSB Mah. İpkas Sanayi Sitesi D Blok No:42, 34490 Başakşehir / İstanbul
Sales, technical support, finance.
Warehouse
Ömerli Mah. Ilgaz Sk. No:1, 34555 Arnavutköy / İstanbul
Warehousing, loading and dispatch; appointment for self-collection.
Three technical notes from the field
Three situations our technical team keeps seeing in customer production; professional observation, not an account of a specific customer or lot. All three are cases blamed on the material but solved by drying, gate position or the equivalent-grade choice.
Undried polyamide is spoiled in storage, not in the mould
“Polyamide in an opened bag takes up moisture from the air within hours; the silver streaks in the mould usually come from the bag, not the machine.”
For moisture-absorbing materials such as polyamide, polyester, polycarbonate and TPU, processing quality is decided the moment the bag is opened. An opened bag should be used the same day, leftovers resealed, and every lot dried at the temperature and time in the TDS. Production that skips drying gets brittle parts with silver streaks and bubbles; this is the most common case of a material being blamed and a supplier changed for nothing. That is why we send drying values in writing with every sample.
More glass fibre does not reduce warpage, it changes its direction
“Glass fibre stiffens the part but shrinks differently along and across the flow; warpage is solved by the gate position, not by the fibre content.”
Unreinforced material shrinks similarly in all directions; in glass-fibre material the fibres align with the flow, shrinkage drops markedly along it and continues across it. On flat, wide parts this difference shows up as warpage. The fix is not a different fibre content but the gate position, mould temperature and, where needed, a low-warp grade blended with mineral or glass beads. That is why we ask for the part geometry in a quote request.
An equivalent grade is the same data sheet, not the same code
“Two suppliers' PA6 GF30 share a name but may differ in impact and flow; we pick an equivalent by three or four TDS values, not by the code.”
Two grades with the same code can differ in fibre length, sizing system, heat stabiliser and melt flow. When looking for an equivalent we put tensile strength, notched impact, HDT and MFR side by side and point out the difference in the value your part is sensitive to. We do not recommend switching without a mould trial, which is why we send a sample. For the first lots after a switch we also share starting values for drying and mould temperature.
The right raw material is one quotation away.
Send the product code or application, quantity and process; the technical team defines the candidate material and sales replies with price, lead time and the data sheet.