Alperen Kumru

Artículos de Alperen Kumru en el blog de RSS Kumru Automotive.

Drawing: a two-column comparison: on the left, under the heading “From Turkey”, a truck, and on the right, under “From China”, a ship loaded with containers, both approaching a loading ramp in the middle; on the ramp are a coiled hose with a fitting on each end and a bent steel tube; below, the two columns show the same four signs in the same order: a customs booth, a document, a vehicle and a wall clock; their names are written once in the middle: customs duty, document, mode of transport, time difference; the magnifier shows a plain document with placeholder lines and a blank stamp

14 de octubre de 2026Números OEM y aprovisionamiento

Sourcing hoses and tubes from Turkey or China: duty, transport and time difference

Four differences an EU buyer can check in official sources: customs duty, A.TR and origin, mode of transport, and the time difference.

Drawing: on the left a paper quality certificate with a seal and a signature, on the right a screen showing the lookup record of the same certificate; the record has three rows: who the certificate was issued to, for which address and scope, and its status today; the status row is marked in blue and reads active, the paper has no status row; an arrow from the certificate to the screen shows the comparison; the magnifier shows the number on the certificate above the number in the record, with a match sign between them

13 de octubre de 2026Números OEM y aprovisionamiento

How to verify a supplier’s IATF 16949 or ISO 9001 certificate

Where to verify a supplier’s IATF 16949 or ISO 9001 certificate, what to check on it, what non-accredited means, and what to do if it is not found.

Drawing: five stops on a single timeline running left to right: a technical drawing waiting for approval with a bent sample tube beside it, a bundle of tubes, crates waiting in a queue, a tube bending machine and a wrapped pallet; the first stretch of the line is blue and thick, and the bracket above it shows that this part is in the buyer’s hands; the magnifier shows the drawing with its approval box still empty, an hourglass and the sample tube

11 de octubre de 2026Números OEM y aprovisionamiento

What drives lead time on custom hose and tube orders?

What lead time is, what it is made of on a custom hose or tube order, which part the buyer controls, and how to have it written into a quotation.

Drawing: four parts one below the other on the left: a bent steel pipe with a nut at each end, a straight steel tube of the same diameter without fittings, a hose with a fitting at each end and a small hydraulic cylinder; an arrow runs from each to a separate folder on the right: the bent pipe to the engine part folder, the straight tube to the steel tube folder, the hose to the rubber or plastic hose folder, the cylinder to the hydraulic cylinder folder; the magnifier shows the tariff code field on the tab of one folder, drawn as short dashes, not digits

6 de octubre de 2026Números OEM y aprovisionamiento

HS codes for injector pipes, hydraulic hoses and cab tilt parts: how to find the right one

Which HS heading covers injector pipes, hydraulic hoses, cab tilt cylinders and pumps, shown with published EU, Turkish and US customs decisions.

Drawing: three stops from left to right joined by one dashed line: a pallet of wrapped cartons on a factory loading ramp, the same pallet being lowered onto a ship by a crane at the port of shipment, and a truck waiting at the port of destination; the place where risk passes is marked in red: the seller’s premises under EXW, on board the ship at the port of shipment under FOB and CIF; a blue bracket shows that under CIF the seller pays freight and insurance as far as the port of destination; the magnifier shows the moment the pallet comes down on the ship’s deck

30 de agosto de 2026Números OEM y aprovisionamiento

EXW, FOB and CIF explained: Incoterms® rules for parts importers

Who arranges freight, insurance and customs under EXW, FOB and CIF, where risk passes, and which rule fits cartons, pallets and part loads.

Drawing: at the top an old steel line with a nut at each end and a stained surface, and below it a new line with the same bends and the same ends; dashed lines align the bends of the two lines one above the other; beside them a drawing sheet showing only the plain outline of the line; the magnifier shows the nutted ends of the two lines one above the other, with the same end form and the same nut

25 de agosto de 2026Números OEM y aprovisionamiento

Discontinued lines: having a pipe made from a sample or a part number

How to have a discontinued or classic-vehicle injector, fuel or steering pipe made from a sample, drawing or part number, and why a minimum quantity applies.

Drawing: at the top a plain tube bender seen from above, its tooling in blue; two arrows leave the machine, one down to a single bent steel tube on the left, one down to a batch of the same tube nested in a row on the right; below them the same set-up box is whole on the left and cut into thin slices on the right, one slice for each tube; the magnifier shows the bender tooling: the bend die, the clamp holding the tube and the tube bent around the die

30 de julio de 2026Números OEM y aprovisionamiento

What is MOQ? How a minimum order quantity is set for spare parts

What MOQ means, why manufacturers set a minimum order quantity, what sets it for custom hoses and tubes, what lead time depends on, and what to ask.

Drawing: a bent steel pipe and a short hose with a fitting at each end on a bench; beside them a checklist with all five boxes ticked: where each operation is done, quality certificate, sample approval, batch records, customs document; next to the list a sealed certificate and a closed shipping carton with a blank label; the magnifier shows the sealed certificate with its scope section marked in blue

31 de marzo de 2026Números OEM y aprovisionamiento

Sourcing pipes and hoses from Turkey: how to evaluate a manufacturer

How to evaluate a pipe or hose manufacturer in Turkey from a distance: in-house processes, certificate checks, sample approval, A.TR and origin documents.

Drawing: a plain truck on the left, labelled vehicle series; arrows fan out from it to the right, each to an injector pipe bent to a different shape; a small number tag is tied to every pipe, with the numbers drawn as short dashes, not digits; the magnifier enlarges one tag and shows the same number written two ways, one above the other: run together on top, split into groups with spaces below

27 de enero de 2026Números OEM y aprovisionamiento

Mercedes injector pipe part numbers: which number fits which vehicle series?

How Mercedes-Benz injector pipe numbers are written, where to find them, and which number matches which truck, bus and van series.

Drawing: a line with no part number lying on a bench, with a nut at each end and three bends; a thread pitch gauge sits in the mouth of one nut, the jaws of a caliper grip a straight leg, a rule beside the line measures between the corners of two bends, and one of those bends carries an angle mark; the magnifier shows the cone end with its nut, the seat marked in blue

13 de enero de 2026Números OEM y aprovisionamiento

How to identify a line with no part number: nut thread, seat, diameter, length, bends

How to describe an injector, fuel or oil line with no readable part number: tube diameter, nut thread, seat type, length, bends and what to send with them.

Drawing: a turbocharger housing and a piston side by side on a bench; the nameplate on the turbo housing is enlarged in the magnifier and carries two number lines, one above the other: the vehicle maker’s number and the supplier’s number; on the piston the part number is marked on the crown and the casting number on the skirt, with a note that it is the number of the rough part; the numbers are shown as short dashes, not digits

9 de septiembre de 2025Números OEM y aprovisionamiento

What is an OEM part number, where is it written, and how do you find a part by it?

What an OEM (OE) part number is, where it sits on the part, how it differs from casting and supplier numbers, and how to search a catalogue by it.

19 de marzo de 2024Números OEM y aprovisionamiento

Genuine, OEM, matching quality, aftermarket: what the spare-part terms mean

What genuine, OEM, OES, matching quality and aftermarket mean on a spare part: the official definitions and what to check.

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