Welded Steel Pipes


Welded steel pipes are essential components in construction, oil & gas, and manufacturing industries. Known for their durability and cost-effectiveness, these pipes are widely used for transporting fluids, structural applications, and more. This guide covers their types, features, and how to source them reliably from China in 2025.


How to Find Reliable Welded Steel Pipes from China in 2025


China remains a top supplier of welded steel pipes, offering competitive prices and diverse specifications. To find reliable suppliers:

  • Verify certifications like ISO 9001 and API 5L.
  • Check supplier reviews on platforms like Alibaba.
  • Request samples to test quality before bulk orders.
  • Compare pricing and MOQs from multiple vendors.

What Buyers Should Know Before Buying Welded Steel Pipes from China


Before purchasing, consider:

  • Material grades: Common options include ASTM A53, A106, and API 5L.
  • Customization: Ensure suppliers can meet your size and coating requirements.
  • Shipping costs: Factor in logistics, especially for large orders.
  • Payment terms: Negotiate secure methods like LC or escrow.

Types of Welded Steel Pipes


Major types include:

  • ERW (Electric Resistance Welded): Cost-effective for low-pressure applications.
  • LSAW (Longitudinal Submerged Arc Welded): Ideal for large-diameter pipelines.
  • SSAW (Spiral Submerged Arc Welded): Used in oil and gas transmission.

Functions and Features of Welded Steel Pipes


Key features:

  • High strength-to-weight ratio.
  • Resistance to corrosion (with coatings like galvanization).
  • Seamless appearance for aesthetic applications.

Scenarios of Welded Steel Pipes


Common applications:

  • Water and gas distribution systems.
  • Structural frameworks in construction.
  • Industrial machinery and automotive parts.

How to Choose Welded Steel Pipes


Selection criteria:

  • Match pipe specifications to your project requirements.
  • Prioritize suppliers with strict quality control.
  • Consider environmental conditions (e.g., corrosion resistance).

Welded Steel Pipes Q & A


Q: What’s the difference between welded and seamless pipes?
A: Welded pipes are made by rolling steel coils and welding seams, while seamless pipes are formed without seams, offering higher pressure resistance.


Q: How do I verify the quality of welded steel pipes?
A: Request mill test certificates (MTCs) and conduct third-party inspections if needed.


Q: Can welded pipes be used for high-temperature applications?
A: Yes, but material grade (e.g., ASTM A335) must be selected carefully.


Q: What’s the typical lead time for orders from China?
A: Usually 30–60 days, depending on order size and customization.


Q: Are Chinese welded steel pipes compliant with international standards?
A> Reputable suppliers adhere to ASTM, API, and EN standards.