Products Description
High Strength PE Coated Steel Lean Tube Flexible 28mm Lean Pipe
Why is the standard diameter of plastic-coated pipes (lean pipes) 28mm?
As a fundamental component of modular industrial systems, the standard diameter of plastic-coated pipes (also known as lean pipes or flexible pipes) at 28mm is the result of comprehensive optimization considering multiple factors, including engineering practice and ergonomics.
I. Historical Development and Technological Inheritance
Origins of Japanese Lean Manufacturing:
The 28mm specification originated from early practices of the Toyota Production System (TPS).
The optimal grip diameter, determined through field testing, is compatible with standard tool handle diameters (25-30mm).
International Standardization Process:
Incorporated into Japanese Industrial Standards (JIS H 3300) in the 1990s.
Became a mainstream global specification after 2000 (ISO 9001 compatible).
II. Engineering Mechanics Optimization Analysis
Peak Strength-to-Weight Ratio:
With a 28mm pipe diameter and a wall thickness of 1.0-2.0mm: Optimal balance of bending stiffness is achieved, and weight per unit length is controlled within an ideal range.
Connector Mechanical Properties:
Perfectly matches M6/M8 standard fasteners.
III. Industry Application Adaptability
Modular System Compatibility:
Matches standard European/American standard rack hole spacing; compatible with ISO 6780 pallet size system.
Extended Application Cases:
Automotive Industry: 98% matching with bolt hole spacing.
Electronics Industry: Compatible with ESD protection component standards.

Plastic-coated Lean Pipe Selection | |
Exterior Color | Milky White、Pure |White、Beige、Green、Blue、Yellow、Red、Gray、Black;Other colors can be customized from samples. |
Standard Diameter | Standard:φ28mm |
Standard Length | Standard:4000mm Single Piece |
Thickness Selection | Selection:t1.0mm、t1.2mm、t1.5mm、t2.0mm |
Company Profile
Shanghai Xuying Industrial Co., Ltd., established in January 2013, boasts nearly 20 years of experience in the industry.
Currently, our company primarily engages in the research, development, production, and sales of first-generation lean pipes (steel-plastic composite pipes), second-generation lean pipes (stainless steel pipes), third-generation lean pipes (aluminum alloy pipes), and related accessories, as well as aluminum profiles, accessories, and equipment.
The finished equipment we can currently provide for enterprises includes: lean pipe workbenches, lean pipe assembly lines, U-shaped production lines, flow rail lean pipe racks, lean pipe storage racks, lean pipe turnover racks, aluminum profile workbenches, aluminum profile frames, aluminum profile partition walls, and other industrial finished product series.