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About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
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Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Has rich experience in steel pipe processing, can be customized according to customer requirements according to the drawing and sample processing, assist in the development of new products.
Sri Lanka BS 1387 GI Pipes
Category:
Product Description
BS 1387 is a British Standard specification that defines the requirements for screwed and socketed, welded, and seamless steel tubes used for water, gas, and structural purposes. Galvanized Iron (GI) Pipes manufactured under this standard are widely used in plumbing, water supply, fencing, scaffolding, and other industrial applications due to their corrosion resistance and durability.
Key Features Of BS 1387 GI Pipes
Material & Manufacturing:
Made from mild steel (MS) with a hot-dip galvanized (GI) coating for corrosion resistance.
Available in welded (ERW/Electric Resistance Welded) or seamless forms.
Galvanization Process:
The pipes are dipped in molten zinc (hot-dip galvanization), ensuring a thick, protective layer that prevents rust and extends lifespan.
Grades & Classes:
Light (Light Gauge): Suitable for low-pressure applications (e.g., water supply).
Medium: Used for general plumbing and gas distribution.
Heavy (Heavy Gauge): Designed for high-pressure systems and structural uses.
Sizes & Dimensions:
Common sizes range from ½ inch (15mm) to 6 inches (150mm) in diameter.
Wall thickness varies based on class (Light, Medium, Heavy).
Threading & Joints:
Often supplied with threaded ends (screwed & socketed) for easy installation.
Can also be joined using couplings or welding (if required).
Standards & Compliance:
Complies with BS 1387:1985 (British Standard).
Equivalent to ISO 65, DIN 2440, and ASTM A53 (with galvanization).
Applications And Advantages Of BS 1387 GI Pipes
Applications:
Plumbing & Water Supply (potable water lines).
Gas Distribution (low-pressure gas pipelines).
Scaffolding & Fencing (due to strength and rust resistance).
Construction & Structural Uses (e.g., handrails, support columns).
Advantages:
✔ Longevity: Zinc coating prevents rust, ensuring a lifespan of 20+ years.
✔ Cost-Effective: Cheaper than stainless steel but offers good durability.
✔ Easy Installation: Threaded ends simplify assembly without welding.
✔ High Strength: Suitable for both low and medium-pressure applications.
Conclusion
BS 1387 GI Pipes are a reliable choice for water, gas, and structural applications due to their corrosion resistance, strength, and compliance with international standards. They are particularly favored in the UK, Middle East, and Asian markets for infrastructure projects.
Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
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