We have always strived for high quality, high technology, high efficiency p11 pipe, saw welded, 3 dom tubing and high level of service. We will continue to forge ahead and we always regard quality as the foundation, innovation as life, and attach importance to customer feedback information. We uphold the technology-led technology concept, through process changes, the introduction of advanced technology and equipment, from the raw material intake, production process, finished product inspection to form a whole process of the flow of work delivery system. We build a humanistic enterprise management system and form an institutional mechanism for scientific operation and standardized management. We actively expand domestic and international markets, and dig deeper into internal potential.
Product Parameters
En8 Seamless Pipe
Overview
En8 seamless pipe is made of non-alloy medium carbon steel and is processed by cold rolling. It features high precision and good brightness and is commonly used in gas springs, shock absorbers, automobile and motorcycle accessories, etc.
Specification
En8 seamless pipes are manufactured according to various specifications to meet different industry requirements. The common specifications for En8 seamless pipes include:
- Outer Diameter (OD): 10mm to 300mm
- Wall Thickness (WT): 2mm to 30mm
- Length: 3000mm to 12000mm
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Surface Finish: Polished, annealed, or pickled
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Chemical Composition
The chemical composition of En8 steel used for manufacturing seamless pipes may vary slightly depending on the manufacturer. However, the typical chemical composition of En8 steel is as follows:
| Element | Percentage by Weight |
|---|---|
| Carbon (C) | 0.36-0.44% |
| Silicon (Si) | 0.10-0.40% |
| Manganese (Mn) | 0.60-0.90% |
| Sulphur (S) | 0.050% max |
| Phosphorus (P) | 0.050% max |
Mechanical Properties
En8 seamless pipes exhibit excellent mechanical properties, which make them suitable for a wide range of applications. The typical mechanical properties of En8 seamless pipes are as follows:
| Property | Value |
|---|---|
| Tensile Strength | 500-800 MPa |
| Yield Strength | 380-550 MPa |
| Elongation at Break | 12-18% |
| Hardness (Brinell) | 150-200 HB |
| Impact Energy | 27 Joules (at room temperature) |
Steel Grade
The steel grade for En8 seamless pipes is usually identified by its numerical code, which is 080M40 according to British Standards. It is equivalent to 45C8 in Indian Standards and S40C in Japanese Standards.
Application
En8 seamless pipes find application in various industries that require high strength and durability. Some common applications include:
- Automotive components
- Machinery parts
- Construction equipment
- Oil and gas pipelines
- General engineering
Product Show



As a manufacturing enterprise, we have gained an outstanding position in the 304 316 Mirror Polished Cold Drawn Seamless Stainless Steel Pipe/Tube Sanitary Piping for Building Material Industry field in China. 'Quality', 'honesty' and 'service' is our principle. Our brand culture not only helps to improve customers' awareness of our products and enhance market competitiveness, but also helps the company to give full play to its advantages in reputation, culture, management, and technology to increase customers' loyalty and reputation for our products.
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