Different grades of steel

ASTM A53 Grade B Welded and Seamless Steel Pipe

ASTM A53 Grade B pipes deliver proven reliability across oil rigs and chemical plants, combining toughness with precision for demanding industrial applications. These workhorses have earned trust through 15+ years of field performance.

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Description

The Workhorse Pipe You Can Build On

We’ve been producing ASTM A53 Grade B pipes for over 15 years, and we still get excited about them. Why? Because they’re the unsung heroes of carbon steel piping – tough enough for oil rigs, precise enough for chemical plants, and reliable enough that engineers keep coming back.

What makes Grade B special? The 35,000 psi minimum yield strength and 60,000 psi tensile strength hit that sweet spot between durability and workability. We see it used everywhere from offshore platforms to municipal water systems. The welded ERW/EFW versions make economic sense for larger diameters (we’ve supplied up to 48″), while seamless pipes (hot-finished or cold-drawn) are preferred for high-pressure steam lines and hydraulic systems where wall consistency is critical.

Where Performance Meets Practicality

  • Our seamless pipes cover NPS 1/8″ to 26″ with wall thickness from SCH 10 to SCH 160 – that’s why power plants trust them for high-temp applications
  • The welded versions use double-submerged arc welding for critical projects, with X-ray inspection available
  • Every pipe gets hydrostatic tested at pressures exceeding working requirements (we’ve seen some hold at 3,000 psi!)
  • The chemical composition (≤0.30% C, ≤1.20% Mn) gives you excellent weldability without preheating in most cases

One customer in the Gulf used our galvanized A53 pipes for a coastal refinery project – after 5 years, they reported zero corrosion-related maintenance. That’s the kind of real-world performance we build for.

Made in China, Built for Your Needs

Being a factory-direct supplier means we control everything:
– Custom lengths (from 5.8m to 12m standard, but we’ve done 16m specials)
– End treatments from plain to threaded-and-coupled (we keep NPT threads in stock)
– Special coatings like 3LPE or FBE for harsh environments
– Third-party inspection (SGS, BV, etc.) with full documentation

We don’t just cut pipes to size – we help solve problems. Need a 14″ OD with non-standard wall thickness? Done. Pipes for high-sulfur gas service? We’ll tweak the sulfur content below the standard 0.045% max. Our ISO 9001-certified process means you get consistency, whether it’s 10 pipes or 10,000.

When you need carbon steel pipes that balance strength, availability, and cost, we’re here to help. Give us your specs – we’ll make it work.

Frequently Asked Questions

What products does Baoli Steel mainly produce?
Baoli Steel specializes in the R&D and manufacturing of high-quality steel products, including:
Plate Series: Hot-rolled steel plates, cold-rolled steel plates, galvanized plates (GI/GL), stainless steel plates, checkered plates, medium and heavy plates, etc.
Pipe Series: Seamless steel pipes, welded steel pipes, galvanized pipes, spiral pipes, square/rectangular pipes, etc.
Profile Series: I-beams, channel steel, angle steel, H-beams, round bars, flat bars, etc.
Custom Processing: Supports steel cutting, bending, punching, and surface treatment (spraying, galvanizing) services.
Can you provide customized specifications or OEM services?
Yes! We offer:
Specification Customization: Special sizes, thicknesses, and materials based on customer needs (minimum order quantity depends on product type).
Processing Customization: Processing based on drawings or samples, supporting laser cutting, beveling, heat treatment, etc.
Packaging Customization: Customized packaging methods (e.g., wooden crates, pallets, rust-proof films) and labeling as per customer requirements.
What is the production cycle and delivery method for orders?
Standard Orders: 7-15 working days (depending on product type and quantity).
Customized Orders: 15-30 working days (sample confirmation time required).
Transportation Methods: Supports sea, land, and air transport; we can assist with customer-specified logistics or provide optimal shipping solutions.
What are your main markets and customer cases?
Baoli Steel’s products are exported to over 60 countries and regions, mainly covering:
Southeast Asia: Vietnam, Thailand, Malaysia
Middle East: UAE, Saudi Arabia, Iran
Africa: Nigeria, South Africa, Egypt
South America: Brazil, Mexico
Our customers include construction engineering companies, manufacturing plants, trading companies, and energy enterprises.

Different grades of steel