Office Chair Inspection Work

Office chair inspection work requires a comprehensive review from eight aspects: appearance, dimensions, structure, materials, functionality, safety, labeling and packaging, and sampling inspection. The specific key points are as follows:

I. Appearance Inspection Confirm that the overall color matches the order requirements, and that pattern printing or embroidery is clear and free from misalignment. The surface finish (such as painting, electroplating, fabric covering) should be uniform, without issues like sagging, blistering, or color variation. Check for scratches, cracks, dents, fabric threads, damage, or stains. Ensure that metal components are properly rust-proofed and that plastic parts are free from deformation or burrs.

II. Dimension and Specification Inspection Use professional measuring tools to measure key dimensions such as seat height, seat width, seat depth, back height, armrest height, and spacing, ensuring they meet the tolerance range specified in the order or design drawings (usually ±2-5mm). Verify the overall proportional harmony of the chair, such as whether the angle between the backrest and seat surface conforms to ergonomic standards (95°-105°). Check if the travel range of adjustable components (such as gas lift cylinders, headrests, and armrests) meets the standards.

III. Structure and Stability Inspection Confirm through visual inspection or tapping that the frame material has no cracks, decay, or deformation. Check that screws, rivets, and welds are secure, with no rust on metal parts and no brittleness in plastic connectors. Apply vertical pressure to the seat surface (simulating a load of over 100kg) and observe for any wobbling or unusual noises. Test the reliability of the tilt function locking mechanism and the smoothness of its rebound. For swivel chairs, verify the flexibility of the base rotation and the effectiveness of the braking mechanism.

IV. Material and Manufacturing Process Inspection Confirm that the frame material (such as steel, aluminum, or solid wood) meets the order requirements, that the density and rebound performance of the filling meet standards, and that the fabric material is consistent with the order and free from odors. The sewing process should have even stitching without skipped stitches, and seams should be flat. Plastic parts should have smooth injection molding gates, and metal parts should have chamfered edges. For mesh chairs, check for uniform tension.

V. Functionality and Operation Inspection Test the smoothness and locking reliability of adjustable components such as gas lift cylinders, armrests, and headrests. For swivel chairs, verify that rotation is smooth without jamming or unusual noises, and that braking responds quickly. Simulate actual usage scenarios by placing a heavy object (over 120kg) on the seat surface for 1 hour to check for structural deformation. For chairs with massage or heating functions, verify circuit safety and normal function activation.

VI. Safety Inspection All edges should be rounded or blunted, and small parts should be securely fastened to prevent detachment. Verify that gas lift cylinders have passed certifications such as BIFMA or SGS. Ensure that materials comply with environmental standards such as REACH and RoHS, with no excessive levels of harmful substances like formaldehyde or benzene. For chairs used in public places, check that the fabric has passed flame-retardant tests (such as the CAL TB 117 standard).

VII. Labeling and Packaging Inspection Verify that product labeling information (such as product name, model number, and barcode) matches the order. Check the protective quality of the inner packaging (such as pearl cotton or foam) and ensure that hardware accessories and instruction manuals are complete. Conduct drop tests (select two boxes and drop them from a certain height) to verify the packaging's protective capability.

VIII. Sampling Inspection and Standard Compliance Adopt the AQL Level II sampling standard and set acceptance criteria for major defects (structural issues, functional failures) and minor defects (appearance flaws). Refer to standards such as BS-EN1728, such as conducting a static load test on the seat by applying a 130kg object for 10 times to check for deformation or damage.