Longkang Construction Waste Chute Production Standards

Longkang construction waste chutes comply with strict enterprise standards and relevant national standards, standardizing the entire process from raw materials to finished products. This article introduces the production standard system.

1. Applicable Standards
2. Enterprise standard: Q/LK JZJT 001-2024
3. Refer to GB/T 13663 (Polyethylene (PE) Piping Systems for Water Supply)
4. Refer to GB/T 18742 (Polypropylene Piping Systems for Hot and Cold Water Supply)
5. Refer to JG/T 229 (Plastic Pipes for Building Drainage)
6. Refer to GB/T 2828.1 (Sampling Procedures for Inspection by Attributes)
7. Raw Material Standards

HDPE raw material:

• Complies with GB/T 11115 (Polyethylene (PE) Resin)
• Extrusion grade, grade 5502
• Virgin material; recycled material prohibited
• Carbon black content 2%–3%

III. Product Standards

1. Specification Series

• Diameter: 400/500/600mm
• Wall thickness: 6/8/10mm
• Length: 1.5m (standard)

2. Dimensional Tolerances

• Outer diameter: ±2mm
• Wall thickness: ±0.5mm
• Length: ±5mm

3. Performance Indicators

• Tensile strength ≥20MPa
• Elongation at break ≥500%
• Impact strength ≥15kJ/m²
• Low-temperature embrittlement ≤-40℃

1. Inspection Standards
2. Factory Inspection

• Per-section appearance, dimensions, and joints
• Per-batch performance sampling

2. Type Inspection

• Full inspection once a year
• Inspection upon raw material changes
• Inspection upon new process introduction

3. Sampling Plan

• According to GB/T 2828.1
• General inspection level II
• AQL=2.5

1. Production Management
2. Production environment: workshop temperature 15–35℃
3. Periodic equipment calibration
4. Operators trained and certified before taking post
5. Complete process documentation
6. Complete production records
7. Quality Certification
8. ISO 9001 quality management system
9. Product inspection report
10. Environmental protection inspection report
11. Safety production standardization

VII. Longkang Standard Advantages

1. Enterprise standards exceed national standards
2. Full-process standardization
3. Consistent quality across batches
4. Customers may accept goods against the standards
5. Product quality is guaranteed