BS 1387 Galvanized Welded Steel Pipe

Published:2025-10-27 | Last Updated: 2025-10-27    Views: 70

I. Introduction to BS 1387 Galvanized Welded Steel Pipes

BS 1387 galvanized welded steel pipes are hot-dip galvanized steel pipes manufactured according to British Standard BS 1387:1985. They are widely used for low-pressure fluid conveyance in water supply, gas, air, and fire protection systems. This product utilizes welded steel pipes as the base tube, undergoes hot-dip galvanizing treatment, and offers excellent corrosion resistance and extended service life.

It features high dimensional accuracy, smooth inner and outer surfaces, and strong zinc coating adhesion. Installation is convenient, supporting both threaded and welded connections.

Commonly used in construction projects, scaffolding, machinery manufacturing, and water supply/drainage systems, it is a widely applied general-purpose galvanized steel pipe in international markets.

II. Relevant Parameters for BS 1387 Galvanized Welded Steel Pipes

III. Common Applications of BS 1387 Galvanized Welded Steel Pipes

(1) Building Water Supply and Drainage Systems

Used for conveying cold and hot water in residential, commercial buildings, and municipal projects to prevent pipe corrosion and extend service life.

(2) Fire Sprinkler Systems

Widely used in main fire lines and branch sprinkler pipes, capable of withstanding high pressures while maintaining excellent corrosion resistance in humid environments.

(3) Air and Gas Conveyance Systems

Suitable for transporting compressed air, natural gas, and other non-corrosive gases; smooth inner walls minimize pressure loss.

(4) Scaffolding and Structural Support

Frequently employed in construction scaffolding, structural bracing, and temporary framing due to high strength and standardized dimensions.

(5) Industrial and Mechanical Applications

Used in machinery manufacturing, equipment supports, warehouse shelving, agricultural greenhouses, and lightweight structural components.

(6) Fencing and Guardrail Systems

With excellent corrosion resistance, commonly employed in outdoor fencing, railings, light poles, and landscaping structures, offering strong weather resistance and an attractive appearance.

IV. BS 1387 Classification of Galvanized Welded Steel Pipes

V.BS 1387 Production Process for Galvanized Welded Steel Pipes

Steel strip uncoiling → Forming → High-frequency welding → Straightening → Cutting → Cleaning → Hot-dip galvanizing → Inspection → Packaging

Through rigorous weld flaw detection and galvanized coating adhesion testing, the corrosion resistance and dimensional accuracy of each steel pipe are ensured.

VI. Packaging and Transportation Methods for BS 1387 Galvanized Welded Steel Pipes

(1) Bundling Method

Pipes are typically bundled in groups of 6–8 using steel strapping.

Bundles must be securely fastened to prevent loosening or damage during handling and loading/unloading.

(2) Protective Measures

Outer layers are covered with moisture-proof plastic sheeting or woven fabric to prevent water and dust ingress.

Plastic end caps may be added to protect threads or pipe ends from damage.

(3) Identification

Each bundle is spray-printed or labeled with specifications, standards, batch numbers, and manufacturer information for easy identification and inspection.

(4) Transportation Methods

Land Transport: Ship via truck or flatbed trailer with secure fastening to prevent shifting.

Sea Transport/Export: Load bundles into containers or ship in bulk, ensuring pipe ends and surfaces are protected.

(5) Precautions

Avoid contact with sharp objects to prevent scratching the galvanized coating.

Store in a well-ventilated, dry area to prevent rust from prolonged moisture exposure.

VII. Frequently Asked Questions (FAQ)

(1) What is the difference between BS 1387 and EN 10255?

Answer: BS 1387 is a British standard, while EN 10255 is an EU standard. Both are largely compatible in terms of dimensions, wall thickness, and pressure ratings. Export customers often specify BS 1387 marking, but the actual products can simultaneously meet EN 10255 requirements.

(2) What types of BS 1387 exist, and how should one select them?

Answer: They are categorized into Light, Medium, and Heavy.

Light: Suitable for temporary pipelines or non-pressure structures

Medium: Suitable for general building water supply/drainage and gas conveyance

Heavy: Suitable for fire protection, industrial main pipelines, and high-pressure systems

(3) Is thicker galvanized coating always better?

Answer: Galvanized coating thickness should be selected based on the usage environment. For indoor or dry environments, a medium coating thickness is sufficient; for outdoor or humid environments, a coating ≥ 200 g/m² offers greater durability.

(4) Can pipe length or threading be customized?

Answer: Yes. Standard length is 6 meters, but custom lengths are available upon request. Ends can be threaded (BSPT) to meet on-site installation requirements.

(5) Can BS 1387 pipes be used for high-pressure applications?

Answer: Medium and heavy-duty pipes can withstand typical building and industrial pressures. However, they are unsuitable for high-pressure boiler piping or petroleum transmission. Specialized high-pressure steel pipes should be selected for such applications.

(6) Are quality inspections conducted before shipment?

Answer: Each pipe undergoes inspection for appearance, dimensions, welds, and galvanized coating thickness to ensure compliance with BS 1387 standards. Inspection reports are available upon request.

(7) Will rust form during long-term outdoor use?

Answer: The galvanized coating provides effective corrosion protection. However, in extremely humid or coastal environments, consider thicker galvanization or applying a protective coating to extend service life.