Description
Sino East Steel Group’s premium BS 1387 and ASTM A53 Galvanized Steel Pipes are engineered to offer the highest levels of structural durability and corrosion resistance for international B2B markets. Manufactured using advanced Electric Resistance Welding (ERW) and high-density Hot-Dip Galvanizing (HDG) technology, these pipes exceed industry standards for fluid transportation, fire protection systems, and heavy greenhouse structural applications.
Technical Product Specifications
| Parameter Specification | Standards & Compliance Details |
|---|---|
| Standards | BS 1387:1985 (Light, Medium, Heavy Class), ASTM A53 Grade A & B |
| Dimensions Range | 1/2″ up to 8″ (DN15 – DN200) Outer Diameter |
| Zinc Coating Weight | Hot-dip galvanized, average zinc coating > 500 g/m² (70 microns) |
| Material Grades | S235JR, S355JR, ASTM A53 Gr.B, Q235B, Q345B |
| Pipe End Finishing | Plain ends, Beveled ends, Threaded and Coupled (ANSI B1.20.1 NPT / BS21 BSPT) |
| Certification | ISO 9001:2015, CE, API 5L, SGS, Mill Test Certificate (MTC) supplied |
| Application Areas | Low-Pressure Water Lines, Fire Sprinkler branch piping, Steam, Gas Distribution, Scaffold framework, Agriculture Greenhouses |
Key Product Highlights
- Maximum Corrosion Resistance: Thick hot-dip galvanized coating ensures a tough barrier against rust, preventing scaling and ensuring a 20+ year outdoor service life.
- Precise Standard Compliance: Calibrated strictly to BS 1387 and ASTM A53 thickness and outer diameter tolerances for flawless connection integration.
- Premium Threading & Workability: Low-carbon formulation guarantees superior weldability and clean, burr-free BSPT/NPT threading.
- Safe High-Pressure Handling: Hydrostatically tested at the factory to guarantee structural integrity under mechanical and hydraulic pressures.
BS 1387 vs. ASTM A53 Galvanized Steel Pipes: Applications in Modern Engineering
In B2B industrial infrastructure projects, selecting the right standard is crucial. BS 1387 (British Standard) is highly specified throughout Commonwealth nations and Southeast Asia for low-pressure water, air, and gas networks, dividing pipes into Light, Medium, and Heavy classifications. Meanwhile, the ASTM A53 (American Standard) is widely used across North and South America for mechanical, pressure, and general-purpose pipe installations, specifying Grade A and Grade B options based on mechanical strength. At Sino East Steel Group, we manufacture both classes, utilizing premier carbon steel to provide global contractors with compliant, reliable solutions.
Frequently Asked Questions (FAQ)
Q: What is the average zinc thickness on your hot-dip galvanized steel pipes?
A: Our hot-dip galvanized steel pipes carry an average zinc coating weight exceeding 500 g/m² (70 microns), which complies with both BS 1387 and ASTM A53 standards. For marine or highly aggressive environments, we can custom-manufacture pipes with heavier zinc coatings exceeding 600 g/m².
Q: Can these pipes be threaded at the factory?
A: Yes. We offer high-precision thread cutting at both ends of the pipe according to ANSI B1.20.1 (NPT) or BS21 (BSPT) standards. We can also provide matching galvanized couplings and protect the threaded ends with plastic caps to prevent shipping damage.
Request a Quick Wholesale Quote
Contact Tianjin Sino East Steel Group Pipe directly at [email protected]. Our engineering team will respond within 2 hours with customized wholesale pricing and logistics solutions.
Need a Quote for This Product?
Send your specs (grade, size, quantity, destination port) — our export team replies within 10 business hours with FOB pricing.
Or WhatsApp: +86 186 2208 8833
B2B Ordering FAQ
What is the MOQ for this product?
Our standard MOQ is 5 metric tons for stock sizes. Full-container orders (20ft/40ft) get the best unit price; smaller trial orders are available for new customers.
What is the delivery time?
Stock items ship within 7-10 days after deposit. Custom sizes and special coatings take 15-25 days depending on the specification.
What trade terms do you support?
We quote FOB Tianjin as standard, and also support CIF, CFR, and DDP to major ports worldwide. Payment: T/T 30% deposit + 70% against B/L copy, or L/C at sight.
Can I get a sample before bulk order?
Yes. Sample pieces are available at cost price with shipping charged to the buyer; the sample fee is deducted from the first bulk order.
Do you provide mill test certificates?
Yes, every shipment includes MTC (Mill Test Certificate) covering chemical composition and mechanical properties, plus SGS inspection on request.
