Hunan Great Steel Pipe Co., Ltd

Steel pipe and fittings manufacturer with 27 years experience. Email: [email protected] Tel: [phone]

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Another successful delivery for an international pipeline project. 🌍 Hunan Great Steel Pipe supplied 1,720 tons of API 5L PSL1 Grade B LSAW Steel Pipes, manufactured to meet the client's project requirements. ✔ API 5L PSL1 Gr.B ✔ OD: 406.4 mm ✔ WT: 9.53 mm. From forming an...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

SA-213 T91 or SA335 P91 — Which alloy steel pipe is right for your project? ⚙️
✔ SA-213 T91 alloy steel pipe
Ideal for boiler tubes, superheaters, and heat exchangers.
Optimized for thin-wall applications.
Excellent steam oxidation resistance and weldability.
Focused on sho...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Could you please recommend the heat exchanger tube size selection by application in the Industrial project?
1)HVAC & Refrigeration: OD: 9.52 mm – 19.05 mm. Designed for Thin wall thickness for higher heat transfer efficiency.
2)Food & Pharmaceutical Industry: OD: 12.7 mm – 25...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Casing vs. Tubing: Same Standard, Different Mission 🎯 Both fall under API 5CT, but here's the breakdown:
🛡️ Casing = The well's backbone. Installed during drilling to stabilize the borehole and isolate formations.
⛽ Tubing = The production highway. Runs inside casing to bri...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Looking for NDE-tested and pressure-tested steel pipes? ⚙️ Hunan Great Steel Pipe offers ASTM A106/A53 Grade B seamless steel pipes (48.26 mm × 7.14 mm × 6 m) that are fully inspected and tested to meet the demanding requirements of energy transportation projects.
Q: Why does...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

🌍 Our API 5L GR.B Piping Spools (Pipe Welded with Flange) are engineered for strength, reliability, and efficient installation in pipeline systems. ⚙️ ✔ Product: Piping Spool (Pipe Welded with Flange) ✔ Standard: API 5L ✔ Grade: GR.B ✔ Size: 18” OD × SCH40
Q1: What fabri...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Precision threading starts with precision control. ⚙️ High-quality pipe threads depend on three critical factors:
✔ Thread Dimension – Ensures perfect fitting compatibility
✔ Pitch – Delivers secure and reliable connections
✔ Thread Angle – Improves load-bearing performance...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Protecting industrial facilities with reliable fire protection solutions. 🔥⚙️ Hunan Great Steel successfully supplied fire sprinkler steel pipe systems for a garments factory project in Europe.
✔ Products Details: Grooved seamless steel pipes, ductile iron fittings, flexible...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

📷Supporting global energy projects with reliable steel pipe solutions. 📷 Hunan Great Steel Pipe Co., Ltd. supplied API 5L PSL2 Grade X52 Seamless Steel Pipes for an international energy transportation project. 📷 Standard: API 5L PSL2 📷 Grade: X52 📷 Size: 18” OD × 22 mm WT...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Quality welding starts with strict control. Precision assembly ensures reliable performance. ⚙️
✔ Precise welding parameter control
✔ Certified welders & standardized operations
✔ Strict material and component inspection
✔ Effective welding deformation prevention
✔ Full-p...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

⚙️Hunan Great Steel Pipe Co., Ltd rolling and bending operations are executed under strict processing standards to ensure consistent quality, dimensional accuracy, and reliable performance for every project.
✔ Multi-pass rolling for precise forming
✔ Calibrated bending for a...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Can straight seam pipes fake seamless steel pipes? ⚙️Yes. Some manufacturers grind down the weld, smooth the surface, apply rust paint – and even experts can’t tell at first glance.
Why does it matter? 🌍 It’s unfair, risky, and completely unacceptable. Buyers are left uneasy...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

⚙️Delivering precision. Supporting the global industry. 🌍 At Hunan Great Steel Pipe Co., Ltd., we successfully supplied high-performance Piping Spools (Pipe Welded with Flange) for an industrial project requiring strict quality and technical standards. ✔ Standard: API 5L...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

🔩 5,430 Tons of ASME B16.5 Custom Flanges. OD 318mm | Wall Thickness 28mm.
We didn't just manufacture to standard. We partnered.
✅ Strict QC from material to final inspection
✅ Custom dimensions, fully ASME B16.5 compliant
✅ Proactive engineering support — flange facing, b...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

🔬 How We Test Spiral Welded Steel Pipes?
1️⃣ Tensile Testing: Stretch to break. Measure strength, yield, elongation & reduction. Especially when hardness testing isn't an option.
2️⃣ Hardness Testing: Press. Indent. Measure. Fast, non-destructive & easily converted to tensile s...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

How to choose the right finned tube material for your project? The answer depends on your working conditions.
📷 Carbon Steel Finned Tubes – Cost-effective, pressure-resistant, and ideal for general industrial heating, drying, and steam systems.
📷 Steel + Aluminum Composite...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

🛢️ 1,530 Tons of API 5CT J55 Casing — Delivered. 👉 OD 508mm | Wall Thickness 11/13/16mm. Engineered for extreme environments. Manufactured under strict QC. Custom-inspected to client specs. Fully compliant with international standards. Hunan Great Steel Pipe Co., Ltd. continu...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Hunan Great Steel Pipe Co., Ltd.'s welding & forming services for steel pipes are built for projects that demand strength, accuracy, and consistency at every stage.
What we do:
✔ Pipe welding (MIG / TIG / ARC / SAW)
✔ Custom forming & shaping based on drawings
✔ Diameter ex...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

🚧 Strong Foundations Start with Reliable Tubing Solutions! Hunan Great Steel Pipe Co., Ltd proudly supplied 2000 tons of high-performance tubing for piling construction projects with depths under 100 meters.
✔ Product: Steel Pipe Pile
✔ Specifications: ▪ 88.9×11×6000mm...

[Hunan Great Steel Pipe Co., Ltd @GreatHunan]

Can Stainless Steel Welded Pipes Be Used as Heat Exchanger Tubes? Absolutely. ✅
✔ Smooth surface for better heat transfer & anti-scaling performance
✔ Uniform wall thickness with precise customization
✔ Excellent corrosion resistance & long service life
✔ Lower production...