Understanding the Pipe Schedule Chart and Steel Pipe Schedule: A Guide by Tianjin United Steel Piping Co., Ltd.

When selecting steel pipes for industrial applications, understanding the Pipe Schedule Chart and Steel Pipe Schedule is crucial. These charts play a vital role in determining the wall thickness, pressure rating, and overall strength of a pipe. At Tianjin United Steel Piping Co., Ltd., we are committed to providing our global customers with top-quality steel piping solutions, including ERW (Electric Resistance Welded) pipes, used in a wide range of industries from construction to oil and gas.

As an OFFICIAL | Tianjin United Steel Piping Co., Ltd – ERW Pipe Manufacturer, we prioritize clarity, precision, and industry-grade information. In this article, we break down everything you need to know about the steel pipe schedule system and how our products align with international standards.

What is a Pipe Schedule?

A Pipe Schedule refers to the wall thickness of a pipe. It is a standardized system used to define the thickness of steel pipes. Rather than using direct wall thickness measurements (which vary with pipe diameter), a schedule number (like SCH 10, SCH 40, SCH 80, etc.) is used to specify the wall thickness indirectly.

These schedules are defined by the American National Standards Institute (ANSI) and are universally used in both metric and imperial piping systems.

Why is the Pipe Schedule Chart Important?

The Pipe Schedule Chart and Steel Pipe Schedule provide engineers, contractors, and procurement teams with a reliable reference to:

• Choose the correct wall thickness based on pressure requirements
• Ensure compatibility between pipe fittings and pipe sizes
• Maintain structural integrity in various industrial systems

At Tianjin United Steel Piping Co., Ltd., we offer ERW pipes manufactured in compliance with ANSI B36.10 and B36.19 standards, covering both carbon steel and stainless steel grades.

Pipe Schedule Chart (Sample)

Here’s a simplified Pipe Schedule Chart for reference:

Note: These values can vary slightly based on material grade and manufacturing tolerance.

Our ERW pipes are available in multiple schedules and dimensions, suited for different pressure classes and structural needs.

Steel Pipe Schedule Applications

The Steel Pipe Schedule plays an important role in various industries. Here’s how:

1. Oil & Gas

High-pressure pipelines require SCH 80 or SCH 160 pipes for safe transportation of fluids.

2. Construction

Structural steel pipes often use SCH 40 to balance strength and cost-efficiency.

3. Mechanical Engineering

Custom machinery often requires precise pipe wall thickness to fit equipment designs and ensure durability.

At Tianjin United Steel Piping Co., Ltd., we manufacture ERW steel pipes in different schedules to meet such sector-specific demands efficiently.

Why Choose ERW Pipes from Tianjin United Steel Piping Co., Ltd.?

As the OFFICIAL | Tianjin United Steel Piping Co., Ltd – ERW Pipe Manufacturer, our company delivers premium welded steel pipes with the following advantages:

✔ High Precision

Our ERW pipes are produced using advanced high-frequency welding technology, ensuring smooth, uniform weld seams.

✔ Wide Range of Schedules

We manufacture pipes in SCH 10, SCH 20, SCH 40, SCH 80, and SCH 160, as well as custom thicknesses based on client specifications.

✔ Certifications and Standards

Our products comply with API 5L, ASTM A53, ASTM A252, and EN10219 standards, making them suitable for international projects.

✔ Corrosion-Resistant Coatings

For oil, gas, and marine applications, we offer various coatings including galvanized, 3LPE, and epoxy, extending pipe life.

✔ Customization

We understand every project is unique. From pipe length to wall thickness, our engineers support custom orders tailored to exact requirements.

How to Use a Pipe Schedule Chart Effectively?

When selecting pipes, engineers often refer to the Pipe Schedule Chart to determine:

• If the pipe can handle the required internal pressure
• If the wall thickness is sufficient for the corrosive environment
• Whether the pipe size matches the fittings or connectors

Our team at Tianjin United Steel Piping Co., Ltd. offers technical support to help customers interpret pipe schedules correctly, reducing risks of mismatched fittings or system failures.

ERW Pipe and Schedule Matching: What You Should Know

Electric Resistance Welded (ERW) pipes are known for their consistent wall thickness and high weld strength. Matching the right pipe schedule with the correct ERW pipe ensures the system’s reliability. For example:

• SCH 40 ERW pipes are ideal for water transportation and low-pressure applications.
• SCH 80 ERW pipes are used in industrial pressure pipelines and chemical processing.

We maintain strict quality control throughout the ERW manufacturing process to ensure that wall thickness and outside diameter precisely match schedule specifications.

Final Thoughts

Understanding the Pipe Schedule Chart and Steel Pipe Schedule is essential for engineers, buyers, and project planners. It directly influences the safety, durability, and performance of any piping system. At Tianjin United Steel Piping Co., Ltd., we not only supply steel pipes but also empower our customers with knowledge and technical assistance to make the best decisions for their projects.

As the OFFICIAL | Tianjin United Steel Piping Co., Ltd – ERW Pipe Manufacturer, we invite you to explore our wide range of ERW pipes, available in multiple pipe schedules and coatings. Whether you’re planning a commercial build, oil rig infrastructure, or mechanical system, we are your trusted partner in steel piping.