作者： admink

Granite Inspection Procedure & Key Points
This document outlines the standard procedure and critical focus areas for inspecting granite slabs and tiles before shipment or upon receipt.

I.?Pre-Inspection Preparation
Document Review:

Purchase Order (PO): Verify quantity, dimensions, thickness, finish, and product name.

Quarry Block Report: Confirm the origin of the stone batch.

Packing List: Cross-check against the actual shipment.

Tools & Environment:

Tools: Measuring tape/caliper, straightedge, square, moisture meter, digital colorimeter (if color matching is critical), UV lamp (for resin detection), and a bright light source.

Environment: Inspection must be conducted in a well-lit area, preferably under natural daylight or bright, neutral white light to accurately assess color and finish.

II. Inspection Procedure & Key Points
The inspection should be systematic, covering visual, dimensional, and physical characteristics.

A. Visual Inspection (Surface Quality)

Color & Pattern Consistency:

Focus: Compare slabs/tiles from the same batch. There should be no drastic color variation from the approved sample.

Key Point: Natural variation is expected, but it should be within an acceptable range as per the project requirements.

Finishing Quality:

Polished: Must have a uniform, high-gloss mirror finish without hazy or dull areas.

Honed: Should have a smooth, satin-uniform matte finish.

Flamed/Bush-Hammered: Texture should be consistent across the entire surface.

Surface Defects:

Cracks & Fissures: Distinguish between superficial fissures (natural, usually acceptable) and structural cracks (deep, often unacceptable).

Chips & Pits: Check for small missing pieces on the surface, especially on edges and corners.

Stains: Look for oil, rust, or chemical stains that cannot be removed.

Discoloration: Check for blotches or areas that are significantly darker/lighter.

Veining & Markings:

Focus: Ensure the natural veining is as expected. Check for ugly or concentrated spots of minerals that affect aesthetics.

B. Structural & Dimensional Inspection

Thickness:

Focus: Measure thickness at multiple points (center and all four corners) using a caliper.

Key Point: Thickness must be consistent and within the tolerance specified (e.g., +/- 1mm for 2cm slab).

Dimensions:

Focus: For tiles, check length, width, and diagonal dimensions.

Key Point: Ensure consistency to avoid lippage (uneven edges) during installation.

Squareness & Flatness:

Squareness: Use a carpenter’s square to check if corners are 90 degrees.

Flatness: Place a long straightedge on the surface. Check for any gaps indicating warpage or bowing.

C. Resin & Filling Inspection

Purpose: Most granites are resin-treated to fill minor pits and fissures and enhance the polish.

Inspection:

Visual: Look for areas where the resin has a different gloss, color, or transparency than the natural stone. It should be invisible.

UV Light: Use an ultraviolet lamp. Resin-filled areas will often fluoresce differently than the natural stone, revealing the extent and quality of the repair.

Key Point: Excessive or poorly matched resin is a major defect.

D. Physical Condition & Packing

Edges & Corners:

Focus: Inspect for chipping or damage on all edges and corners, which are highly vulnerable.

Moisture Content:

Focus: Use a moisture meter. High moisture content can lead to efflorescence (white salt deposits) after installation.

Key Point: Slabs should be dry, especially if they are resin-treated.

Packing:

Focus: Check if slabs/tiles are properly packed with sturdy crates, adequate separators (e.g., foam or cardboard between slabs), and well-secured to prevent movement and damage during transit.

III. Defect Classification & Reporting
Major Defect: Structural cracks, deep stains, excessive warpage, or any flaw that makes the piece unusable for its intended purpose. Result: REJECT the piece.

Minor Defect: Small, superficial pits, minor color variation, or small edge chips that can be repaired or are acceptable for the project. Result: Document and negotiate a discount or repair.

AQL (Acceptable Quality Level): For large shipments, use a statistical sampling plan (like AQL) to determine how many pieces to inspect and the maximum number of allowable defects.

Final Report: The inspection report should include photos of all defects, measurements, and a clear summary of accepted, rejected, and questionable pieces

Final quality control for Belt before packing;

Randomly Selected Samples:

Box pumping: Square according to the total number of boxes (for example, 100 boxes of goods, 10 boxes should be pumped, and all colors should be covered, and the size should be added if not enough).
Sampling: According to customer requirements or AQL standard sampling, random sampling from all boxes; Sampling needs to cover all colors and all sizes.

Product quality inspection;
Check contents: size, color, design, materials, organization structure, handwork, finished product trademark, price plate, packaging.

Measured data(Product size,Outer Carton size)

Special test for belt

Inspection Report

The report shows the situation at the inspection site. Check and verify that the goods meet the requirements of size, weight, packing and workmanship according to the information provided by customer. Work is good, function test is normal. After reading the report, customers can accurately judge whether the goods meet the requirements of the order.

Randomly Selected Samples:

Sampling inspection, also known as sampling inspection, is a statistical method that randomly selects a small number of products (samples) from a batch of products for inspection to determine whether the batch of products are qualified.

Product quality inspection;
Including checking product workmanship, whether there are defects, color, specifications, size lights, whether they meet customer order requirements.

Measured data(Product size,Outer Carton size)

Special test for products.

Packing check（color box,out cartons.）

Checking whether the package is fit for transport and meets customer requirements.

Inspection Report

The report shows the situation at the inspection site. Check and verify that the goods meet the requirements of size, weight, packing and workmanship according to the information provided by customer. Work is good, function test is normal. After reading the report, customers can accurately judge whether the goods meet the requirements of the order.

Screw set quality inspection;

Including checking product workmanship, whether there are defects, color, specifications, size lights,whether they meet customer order requirements.

Measured data(Product size,Outer Carton size)

Special test for products.

Packing check（color box,out cartons.）

Checking whether the package is fit for transport and meets customer requirements.

Inspection Report

The report shows the situation at the inspection site. Check and verify that the goods meet the requirements of size, weight, packing and workmanship according to the information provided by customer. Work is good, function test is normal. After reading the report, customers can accurately judge whether the goods meet the requirements of the order.

PSI process for Sandwich Marker ;

Randomly Selected Samples:
Sampling inspection, also known as sampling inspection, is a statistical method that randomly selects a small number of products (samples) from a batch of products for inspection to determine whether the batch of products are qualified.

Product quality inspection;
Including checking product workmanship, whether there are defects, color, specifications, size lights, whether they meet customer order requirements.

Measured data(Product size,Outer Carton size)

Special test for Sandwich maker.

Packing check（color box,out cartons.）

Checking whether the package is fit for transport and meets customer requirements.

Inspection Report

The report shows the situation at the inspection site. Check and verify that the goods meet the requirements of size, weight, packing and workmanship according to the information provided by customer. Work is good, function test is normal. After reading the report, customers can accurately judge whether the goods meet the requirements of the order.

ShenZhen power drying rack for the kitchen;

Product quality inspection;
Including checking product workmanship, whether there are defects, color, specifications, size lights, whether they meet customer order requirements.

Surface Classification/Inspection Guidelines/Inspection Conditions/Defect Definitions/Acceptance Criteria/ Rejection Criteria/please refer to(Visual Quality Standard(synthetic rubber glue).

1.No scratches, breakage, leakage, scratch customer complaint history.
2.Refer to the specification, no more welding, virtual welding, less components.
3.No, lack of glue, deformation,wrinkle,poor viscosity.
4.Refer to the specifications, no deformation, multiple welding, virtual welding, less components.
5.Can not plug holes, lack of glue, deformation, external surface scratches and scratches, the lettering is required to be clear without mutilation, no fingerprints or other residue, color must match other components.
6.According to the specifications, the battery has no bulge, damage, wiring errors, and the battery jet code is clear and correct.
7.Check production date and specification, no damage, leakage.

Size Check
Compare with specification.

Special test for power drying rack.

Packing check（color box,out cartons.）

Checking whether the package is fit for transport and meets customer requirements.
Need to scan the QR code to check, can not have the font incomplete, dirty, color difference and other defects, color stripe must align with color name printed on sticker.
Sticker color is consistent, no stains, no burrs, no damage, good adhesion.
Printing is clear and there is no deformity, and the box is not deformed, damaged or dirty and lower boxes are well matched,History of customer complaints of oil,breakage and wrinkles, box should not have any smudges or fingerprints anywhere.

Inspection Report

The report shows the situation at the inspection site. Check and verify that the goods meet the requirements of size, weight, packing and workmanship according to the information provided by customer. Work is good, function test is normal. After reading the report, customers can accurately judge whether the goods meet the requirements of the order.

PSI process for Xuzhou Sauna room;

100% inspection for 1 sauna room before packing

Product quality inspection;
Including checking product workmanship, whether there are defects, color, specifications, size lights, whether they meet customer order requirements.

Inspection Report

The report shows the situation at the inspection site. Check and verify that the goods meet the requirements of size, weight, packing and workmanship according to the information provided by customer. Work is good, function test is normal. After reading the report, customers can accurately judge whether the goods meet the requirements of the order.

Jiujiang city slate final inspection service

Routine Slate inspection items

Pattern, gloss, flatness, Angle, density, hardness, cracks, stitches, stain lines, nodules, sand holes, holes, dents, warps, angular defects, stains, pits, so on.

Randomly choose samples for inspection. Check product workmanship according to customer requirements.Once an exception is found, the customer is notified immediately.

Measured data(Product size,Outer Carton size)

Special tests slate

Packing check（color box,out cartons.）
Check whether the package meets customer requirements, determine the size and weight of the package, and check whether the package is suitable for product transportation.

Inspection Report

Eagle eyes quality inspection company will provide inspection report within 24 hours after inspection.The inspection process is checking and verifying that the goods meet the requirements of size, weight, packing and workmanship according to the information provided by customer. Work is good, function test is normal. After reading the report, customers can accurately judge whether the goods meet the requirements of the order.