Product Introduction
Carbon Steel Pipe Sch 40 is a standard-weight welded or seamless carbon steel pipe with fixed wall thickness, widely used for general-purpose pressure, fluid, and structural applications in industrial and commercial systems.
| Grade | 20#45B Q355B 27simn 35crmo42crmo 15crmo | |||
| Certificate | IS09001, APl,Bsi, ce, rohs, Jls,Gs, sirm, SABS | |||
| Standard | ASTM, JIS,AISI,DIN,BS,En,GB | |||
| Tolerance | ±1% | |||
| Material | Carbon steel | |||
| Outer Diameter | 6mm - 1220mm, can be customized | |||
| Thickness | 1mm - 100mm, can be customized | |||
| Length | 6m, 12m, can be customized | |||
| Application | Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe | |||
Chemical composition
| Carbon (C) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | iron (Fe) |
| ≤0.25% | 0.90 - 1.30% | 0.10 - 0.35% | ≤0.035% | ≤0.035% | Balance |
Mechanical Properties
| Tensile strength (σb) | Yield strength (σs) | Elongation (δ5) | Hardness (HB) | Hydrostatic test |
| ≥ 415 MPa | ≥ 240 MPa | ≥25% | ≤170 | ≥ 10 MPa |
Classification by Processing Technology
Seamless SCH40 carbon steel pipe: free of weak points caused by welds, featuring high strength and good sealing performance, suitable for the transportation of high-pressure and corrosive fluids, such as petroleum, natural gas, and chemical media.
Welded SCH40 carbon steel pipe: High cost performance, high production efficiency, suitable for medium and low pressure fluid transportation, structural support and other scenarios, such as municipal water supply and drainage, building support.
Typical Applications
Oil and gas industry
Medium and low-pressure oil & gas transmission and surface pipeline supports.
Chemical industry
Transportation of general chemicals, cooling water and steam.
Municipal engineering
Water supply/drainage, fire fighting and low-to-medium pressure gas pipelines.
Construction industry
Building structural supports, indoor plumbing and heating pipelines.
Machinery manufacturing
Equipment pipelines, structural components and fluid delivery.
Others: Power auxiliary lines, mine fluid transport and agricultural irrigation.
Customization Services
We provide tailored customization for Sch 40 carbon steel pipes to meet your project specifications, installation requirements and working environments, supporting one-stop customized production.
Dimension Customization
Custom outer diameter, wall thickness and length as per your drawings, with strict control on dimensional tolerances to fit your pipeline and structural applications.
End Processing Customization
Professional bevel, thread and groove processing, ensuring stable connection and convenient on-site installation.
Anti-Corrosion Customization
Customized coating, painting and anti-corrosion treatment to extend service life in harsh conditions.
Core Procurement Advantages
Customization: Fully adaptable to all requirements, specifications, processes, surface treatments, tolerances, and lengths can all be customized. No additional processing is needed, and it can be directly adapted to the project.
- Stable quality: Full-process quality control, providing a test report for each batch, supporting third-party re-inspection, eliminating quality issues, and avoiding the risk of project rework.
- Short delivery time: Regular specifications are available in stock, and the production cycle of customized products is shortened by more than 30% compared to the industry average, precisely matching the project schedule and accelerating project implementation.
do you have any question?
Q: Pressure rating of Sch 40 carbon steel pipe?
A: Varies by size and temperature, usually 700–2200 psi at room temperature.
Q: Difference between Sch 40 and Sch 80?
A: Same outer diameter; Sch 80 is thicker, heavier, and higher pressure rated.
Q: How to calculate Sch 40 pipe weight?
A: Formula: (OD − Wall Thickness) × Wall Thickness × 0.02466 = kg/m.
Q: What is Sch 40 pipe used for?
A: General-purpose water, gas, oil, and structural low-pressure applications.
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