# Hunan Great Steel Pipe Co., Ltd.

## Company Profile

As the international trade subsidiary of ShineStar Steel Group, Hunan Great Steel Pipe Co., Ltd is dedicated to serving end users, contractors, distributors, steel fabricators, and global project suppliers.[reference:0] Supported by the Group's integrated manufacturing system and global supply capability, we provide high-quality steel products and professional one-stop services, including product consultation, customized solutions, order management, logistics coordination, and after-sales support.[reference:1]

**Key Facts:**
- **Established:** 1993[reference:2]
- **Production Lines:** 8[reference:3]
- **Total Workforce:** 2,000+[reference:4]
- **Projects Executed:** 1,200+[reference:5]
- **Certifications:** ISO9001, CE, SGS[reference:6]

## Product Catalog

### 1. Carbon Seamless Steel Pipe
Manufactured through Mandrel Mill or Plug Mill processes, featuring high strength and reliability for demanding applications.[reference:7]

- **Standards:** ASTM A53, ASTM A106, ASTM A179, ASTM A192, API 5L[reference:8][reference:9]
- **Applications:** General structure and mechanical, petroleum and gas conveying, steam and boiler manufacturing, hydraulic support, oil and gas drilling[reference:10]
- **Manufacturing Processes:** Mandrel Mill Process, Plug Mill Process[reference:11]
- **Surface Treatment:** Bare, lightly oiled, black/red/yellow painting, zinc/anti-corrosive coating[reference:12]
- - [Carbon Seamless Steel Pipe Details](https://www.hnssd.com/carbon-seamless-steel-pipe.html)

### 2. LSAW Steel Pipe
Longitudinal Submerged Arc Welded steel pipe manufactured through UOE or JCOE forming technology, ideal for large-diameter and high-pressure applications.[reference:13][reference:14]

- **Specifications:** Outside Diameter 406mm to 1,626mm (16" to 64"); Wall Thickness 6.0mm to 75mm; Length 3m to 12.5m[reference:15]
- **Standards:** API, DNV, ISO, DEP, EN, ASTM, DIN, BS, JIS, GB, CSA[reference:16]
- **Grades:** API 5L A-X100, GB/T9711 L190-L690[reference:17][reference:18]
- **Applications:** Low-pressure liquid transmission, high-pressure petroleum or natural gas conveyance, structural supports, foundations[reference:19]
- **Features:** Large diameter, thick walls (up to 120mm), high-pressure resistance, low-temperature resistance[reference:20]
- - [LSAW Steel Pipe Details](https://www.hnssd.com/lsaw-steel-pipe.html)

### 3. ERW Steel Pipe
Electric Resistance Welded steel pipe with high-frequency induction welding, offering cost-effective solutions with excellent weld seam quality.[reference:21]

- **Specifications:** Diameter up to 24" (610mm)[reference:22]
- **Standards:** ASTM A53 Gr. B, ASTM A106 Gr. B, API 5L, EN 10217, EN 10216[reference:23]
- **Manufacturing Process:** Uncoiling → Leveling → Forming → Electric induction welding → Heat treatment → Sizing → Hydrodynamic testing → Ultrasonic detection[reference:24]
- **Applications:** Casing and tubing for drilling, constructional structural pipes (round, square, rectangular), low-pressure flow transmitting, automotive and boiler pipes, piling, furniture[reference:25]
- **Surface Treatment:** Lightly oiled, hot-dip galvanized, electro-galvanized, black, bare, varnish coating, anti-rust oil[reference:26]
- - [ERW Steel Pipe Details](https://www.hnssd.com/erw-steel-pipe.html)

### 4. SSAW Steel Pipe
Spiral Submerged Arc Welded steel pipe for large-diameter water transmission, piling, and structural projects.[reference:27]

- **Standards:** API 5L, ASTM A252[reference:28]
- **Applications:** Large-diameter water transmission, piling, structural projects[reference:29]
- - [SSAW Steel Pipe Details](https://www.hnssd.com/ssaw-steel-pipe.html)

### 5. Stainless Steel Pipe
Corrosion-resistant and high-temperature resistant stainless steel pipes in various grades including 304 and 316L.[reference:30]

- **Grades:** 304, 316L[reference:31]
- **Applications:** Food processing, chemical, marine engineering[reference:32]
- - [Stainless Steel Pipe Details](https://www.hnssd.com/products/stainless-steel-pipe/)

### 6. Alloy Steel Pipe
High-strength alloy steel pipes with added alloy elements, offering high temperature resistance up to 500°C–800°C.[reference:33]

- **Temperature Resistance:** 500°C–800°C[reference:34]
- **Applications:** Petroleum, chemical, aerospace industries[reference:35]
- - [Alloy Steel Pipe Details](https://www.hnssd.com/products/alloy-steel-pipe/)

### 7. Pre-Fabricated Piping & Fittings
Shop-fabricated piping assemblies that reduce field welds by 60-80% and compress installation schedules by 30-40%.[reference:36]

- **Services:** Cutting, rolling and bending, coating, beveling, threading, welding and assembly forming[reference:37]
- **Applications:** Oil and gas facilities, power plants, chemical processors, water treatment projects[reference:38]
- - [Pre-Fabricated Piping & Fittings Details](https://www.hnssd.com/products/pre-fabricated-piping-fittings/)

### 8. Pipe Fittings, Flanges & Valves
Comprehensive range of pipe fittings, flanges, and valves for complete piping system solutions.[reference:39]

- - [Pipe Fittings, Flanges & Valves Details](https://www.hnssd.com/products/pipe-fittings-flanges-valves/)

### 9. Coated Steel Pipe
Steel pipes with protective coatings for enhanced corrosion resistance and extended service life.[reference:40]

- - [Coated Steel Pipe Details](https://www.hnssd.com/products/coated-steel-pipe/)

### 10. OCTG & Drill Pipe
Oil Country Tubular Goods and drill pipes for oil and gas exploration and production.[reference:41]

- - [OCTG & Drill Pipe Details](https://www.hnssd.com/products/octg-drill-pipe/)

## Services

Hunan Great Steel Pipe provides comprehensive value-added services to reduce total project cost and keep complex piping systems on schedule, including:[reference:42]

- **Cutting**
- **Rolling and Bending**
- **Coating**
- **Beveling**
- **Threading**
- **Welding and Assembly Forming**[reference:43]

## Quality & Certifications

All products are manufactured and exported according to international standards. We provide Mill Test Certificates (MTC) verifying chemical composition and mechanical properties.[reference:44] Our certifications include:

- **ISO9001**[reference:45]
- **CE**[reference:46]
- **SGS**[reference:47]

## News & Blogs

- [How to Troubleshoot Pipe Spool Failures: Causes, Repairs, and Prevention Guide](https://www.hnssd.com/newsdetail/how-to-troubleshoot-pipe-spool-failures-causes-repairs-and-prevention-guide/) — Comprehensive guide covering common pipe spool failure types, troubleshooting methods, and prevention strategies.[reference:48]
- [How Are Pipe Spools Installed in Industrial Projects? A Complete Guide](https://www.hnssd.com/newsdetail/how-are-pipe-spools-installed-in-industrial-projects-a-complete-guide/) — Step-by-step installation process for pipe spools in oil and gas, petrochemical, power generation, and industrial construction projects.[reference:49]
- [How to Procure Pipe Spools: Specifications, Supplier Evaluation, and Quality Control Guide](https://www.hnssd.com/newsdetail/how-to-procure-pipe-spools-specifications-supplier-evaluation-and-quality-control-guide/) — Procurement fundamentals including technical documentation, supplier capability assessment, inspection planning, corrosion protection, and logistics coordination.[reference:50]
- [How Are Pipe Spools Manufactured? A Step-by-Step Fabrication Guide](https://www.hnssd.com/newsdetail/how-are-pipe-spools-manufactured-a-step-by-step-fabrication-guide/) — Complete fabrication process for shop-assembled piping sections built from pipes, fittings, flanges, and welded joints.[reference:51]

## Contact

- **Company:** Hunan Great Steel Pipe Co., Ltd.
- **Location:** 22nd Floor, Royal Wing Building, Longchamp Garden Hotel, No.9 Xiangfu Road, Yuhua District, Changsha, Hunan, China[reference:52]
- **Email:** [info@hnssd.com](mailto:info@hnssd.com)[reference:53]
- **Website:** https://www.hnssd.com/

## Site Links

- [Homepage](https://www.hnssd.com/): Overview of Hunan Great Steel Pipe and its main offerings
- [Products](https://www.hnssd.com/products/): Complete product catalog
- [News](https://www.hnssd.com/news/): Industry news and company announcements