Question 1

What is your minimum order quantity (MOQ)? Can I order samples?

Accepted Answer

There is no minimum order quantity for our standard products. You can order a single unit for evaluation or purchase in bulk.

Question 2

Are you a manufacturer or a trading company?

Accepted Answer

We are a manufacturer specializing in the research, development, and production of measuring instruments since 2008. We offer a wide range of instruments for industrial testing applications.

Question 3

How do you ensure product quality? Can you provide certificates?

Accepted Answer

Our instruments undergo quality inspections before shipment. Inspection reports and third-party calibration or testing certificates may be available upon request. Please contact us to confirm availability and any additional fees.

Question 4

What is your warranty and after-sales service policy?

Accepted Answer

Our instruments come with a 12-month warranty. We provide technical support and offer paid repair services after the warranty period.

Question 5

What are your payment methods, delivery terms, and lead times?

Accepted Answer

We accept payments in USD and CNY via T/T or Western Union. Our standard delivery terms include EXW and DAP. Lead times depend on product availability and order quantity. Please contact us for details.

Question 6

Do you offer OEM or customized products?

Accepted Answer

Yes, we offer OEM and customization services. Please contact us with your specific requirements to discuss available options.

Question 7

Are import duties and taxes included in the price?

Accepted Answer

Import duties and taxes depend on the destination country's regulations and are generally not included in the product price. We can provide the HS code for reference. Please consult your local customs authority for applicable charges.

Question 8

Where is the LS253 commonly used?

Accepted Answer

It is used in a quality department or a service company that inspects many different geometries: heavy castings with a D device, bores with a DC device, gear teeth with a DL device and thin hardened parts with a C device, all from one kit.

Question 9

Why print a hardness record on site?

Accepted Answer

Because a customer or an insurer often wants a document at the moment of inspection. A Bluetooth printer produces a slip with the value, the device type, the material and the time, which avoids a later dispute about what was measured.

Question 10

What are the key specifications of the LS253?

Accepted Answer

Optional impact devices D, DC, DL and C, scales HL, HV, HB, HS, HRA, HRB and HRC plus tensile strength, resolution 1 HL, accuracy within +/-12 HL and +/-6 HL typical, repeatability 6 HL, 240 x 16 LCD, 2 AA batteries, 360 degree direction compensation, and a host weight of 247 g.

Question 11

Which impact device should I choose, D, DC, DL or C?

Accepted Answer

The D device is the universal choice for ordinary metal parts with sufficient mass and thickness. DC has a shorter tube and is used inside holes and cylinders. DL has a very slender tube for grooves, gear teeth and the bottom of bores. C uses lower impact energy for surface hardened layers, thin wall parts and small components that would be deformed by D.

Question 12

What is the LS253 multi probe Leeb hardness tester?

Accepted Answer

The LS253 is a multi probe Leeb hardness tester that accepts D, DC, DL and C impact devices on one host. It uses digital dual coil probes, converts between Leeb, Vickers, Brinell, Shore and Rockwell scales, and works with an optional Bluetooth printer and a mobile app for data storage.

Question 13

What are the minimum mass and thickness requirements?

Accepted Answer

For a D device the workpiece should be at least 5 kg and 25 mm thick when uncoupled, or 3 mm thick when rigidly coupled to a heavy support. A C device needs only 1.5 kg and 1 mm coupled thickness. Below these limits the workpiece vibrates and the rebound velocity is reduced, so the hardness reads low.

Question 14

How does the LS253 differ from the LS251D?

Accepted Answer

The LS251D has a fixed D device. The LS253 accepts four different impact devices on the same host, so one instrument covers the geometry range of four separate testers. It also supports an optional Bluetooth printer for a printed record on site.

Question 15

How does the instrument handle measurement in different directions?

Accepted Answer

The probe contains a direction sensor that detects the impact direction and automatically compensates the result, so a reading taken upward, downward or sideways is comparable. Without this compensation a downward impact on a horizontal surface would read several HL higher than an upward impact.

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