Galvanized Steel Pipe
Hot-dip galvanized steel pipe per ASTM A53 for water supply, scaffolding and structural projects.
Galvanized Steel Pipe Manufacturer and Supplier in UAE, Saudi Arabia and the GCC
Galvanized steel pipe is ERW welded steel pipe coated with a hot-dip zinc layer for superior corrosion resistance. Tianjin Sino East Steel Group manufactures and exports galvanized steel pipes in round, square and rectangular sections, complying with ASTM A53, ASTM A106, ASTM A500 and EN 10219. As a factory-direct galvanized pipe supplier to the Middle East, we deliver to distributors and contractors in Dubai, Riyadh, Doha, Kuwait and Muscat with full Mill Test Certificates on every order.
What Is Galvanized Steel Pipe?
Galvanized steel pipe starts as black ERW (electric resistance welded) pipe, which is then cleaned, fluxed and immersed in molten zinc at approximately 450°C. The result is a durable zinc-iron alloy coating that protects the steel from corrosion, making galvanized pipe ideal for water supply, fire protection, scaffolding, fencing and structural applications exposed to humidity and rain. In the GCC, galvanized pipe is one of the most specified materials for plumbing and fire-fighting systems in residential and commercial towers.
Galvanized pipe is available in two main forms: pre-galvanized pipe, where the flat strip is galvanized before forming and welding, and hot-dip galvanized (HDG) pipe, where the finished welded pipe is dipped after production. HDG pipe provides a thicker, more uniform coating and is recommended for exterior and underground applications.
Standards and Specifications
Our galvanized pipes are manufactured and tested according to ASTM A53, ASTM A106, ASTM A500, BS 1387 and EN 10219. Popular products in this category include:
- Galvanized Steel Pipe (ASTM A106 / A53) - the standard specification for water and gas distribution
- ASTM A53 Grade B Galvanized ERW Steel Pipe - Grade B structural quality with full traceability
- Round Galvanized Steel Pipe - from 1/2 inch to 12 inches nominal bore
- Galvanized Square Steel Tube - square hollow sections for structural frames and railings
- Galvanized Square Steel Tube Q345 / ASTM A53 / A500 - high-strength structural square tubing
- Circular Galvanized Steel Pipe - for fencing, handrails and general fabrication
- Steel Pipes - complete range of welded and galvanized pipe for GCC projects
Available specifications:
- Outside diameter: 21.3 mm - 323.9 mm (1/2" - 12")
- Wall thickness: 1.0 mm - 8.0 mm (SCH20 - SCH80)
- Length: 5.8 m, 6 m, 12 m or random lengths
- Zinc coating: 250 - 500 g/m² (pre-galvanized or hot-dip)
- Ends: plain, beveled or threaded with couplings
- Grades: Q195, Q215, Q235, Q345, A53 Grade B, A106 Grade B
Applications Across the GCC
- Water supply and plumbing: galvanized pipes for domestic and commercial water lines
- Fire protection: fire sprinkler systems in towers and industrial facilities
- Scaffolding: galvanized tubes for construction scaffolding in ongoing GCC mega-projects
- Fencing and railings: galvanized round and square pipe for perimeter fencing and balustrades
- Greenhouse structures: galvanized pipe frames for agriculture in desert climates
- Electrical conduits: EMT and rigid galvanized conduit for cable protection
Why Buy Galvanized Pipe from Sino East Steel?
Sino East Steel operates advanced ERW welding lines and hot-dip galvanizing facilities in Tianjin, producing 500,000 metric tons of steel annually with more than 18 years of export experience. Every pipe is subjected to hydrostatic testing, and our quality system is certified to ISO 9001. Each shipment includes an EN 10204 3.1 Mill Test Certificate covering chemical composition, mechanical properties and zinc coating thickness, so your project documentation is complete for Gulf customs and authority approvals.
We stock common sizes for fast delivery and can produce special sizes on request. Our technical team assists distributors with grade selection, coating requirements and packaging for the GCC market - including wooden crates for threaded pipe and sea-worthy bundling for large diameters.
Shipping and Delivery
Galvanized pipe is exported in bundles with steel straps, plastic wrapping for smaller sizes, or wooden cases for threaded pipe. Regular shipments cover Jebel Ali, Khalifa Port, Dammam, Jeddah, Hamad Port, Shuwaikh and Sohar. Lead time is 15 to 25 days after confirmation, plus approximately 18 to 25 days of sea freight.
Frequently Asked Questions
What is the difference between pre-galvanized and hot-dip galvanized pipe?
Pre-galvanized pipe is formed from galvanized strip and welded, giving a thinner coating. Hot-dip galvanized (HDG) pipe is welded first and then dipped in molten zinc, producing a thicker coating of 400-500 g/m² that is more suitable for exterior and underground service.
Can you supply threaded galvanized pipe with couplings?
Yes. We supply threaded and coupled galvanized pipe in sizes from 1/2" to 4", with plain or socket ends, packed in wooden cases for protection.
Do you provide square and rectangular galvanized tubes?
Yes. We produce galvanized square and rectangular hollow sections from 20x20 mm to 200x200 mm, with wall thicknesses up to 8 mm, in Q235 and Q345 grades.
What zinc coating weight is recommended for GCC coastal projects?
For coastal cities such as Jeddah and Dammam, we recommend hot-dip galvanized pipe with a zinc coating of at least 400 g/m² to ensure long service life.
Can you arrange third-party inspection before shipment?
Yes. We can arrange inspection by SGS, Bureau Veritas or TUV before loading, at the buyer's cost, and provide the inspection report with the shipping documents.
Request a Galvanized Steel Pipe Quotation
Send your required size, wall thickness, zinc coating and quantity. Our team will reply with a factory-direct quotation within 24 hours.
Product Range and Available Sizes
Galvanized pipe is available in the complete range for plumbing, fire protection and structural use:
- Round galvanized pipe from 21.3 mm to 323.9 mm (1/2 inch to 12 inches)
- Square and rectangular galvanized tubes from 20x20 mm to 200x200 mm
- Pre-galvanized and hot-dip galvanized finishes with 250-500 g/m2 zinc coating
- Threaded and coupled options for quick site installation
Quality Control and Testing
All products are manufactured and tested under our ISO 9001:2015 certified quality management system. Our in-house laboratory performs chemical analysis, tensile testing, bend testing and dimensional inspection on every production batch, and each shipment is accompanied by an EN 10204 3.1 Mill Test Certificate (MTC). For project-critical orders, we can arrange third-party inspection by SGS, Bureau Veritas, TUV or Intertek at the buyer's request, with inspection reports included in the shipping document set.
Traceability is maintained from the original heat number to the finished product, which is essential for project approvals, quality audits and long-term warranty claims in the Gulf region. We encourage new buyers to request samples and test reports before placing bulk orders.
How to Place an Order with Sino East Steel
- Send your inquiry: specify the product, grade, standard, size, quantity and destination port through the contact form or WhatsApp.
- Receive a quotation: our export team replies within 24 hours with current factory pricing and a confirmed delivery schedule.
- Confirm the order: standard terms are 30% T/T deposit with 70% balance before shipment, or an irrevocable L/C at sight. Production is scheduled after the deposit is received.
- Production and inspection: manufacturing takes 15 to 25 days depending on the product and quantity. Photos, videos and third-party inspection can be arranged during production.
- Shipment: we arrange sea freight to your nominated Gulf port and provide the complete document set - commercial invoice, packing list, bill of lading, MTC, certificate of origin and insurance certificate.
Minimum order quantities are typically 10 to 20 metric tons for standard sizes, with mixed-size container loading available for distributors. We are happy to discuss MOQ flexibility for new customers and trial orders, and we accept payments via T/T, L/C, Western Union and other agreed methods.
Why the Middle East Chooses Sino East Steel
Sino East Steel Group operates from a 65,000 m² production base in Daqiuzhuang Industrial Park, Jinghai, Tianjin - one of China's largest steel manufacturing clusters. With more than 18 years of export experience, 500,000 metric tons of annual capacity and regular customers in over 50 countries, we combine manufacturing scale with deep market knowledge of the GCC construction and energy sectors.
Our export team provides English-language technical support, and we maintain regular shipping schedules to all major Gulf ports including Jebel Ali, Khalifa Port, Dammam, Jubail, Jeddah, Hamad Port, Shuwaikh and Sohar. As a direct factory, we offer the most competitive pricing without intermediary margins, and our after-sales team responds to technical and documentation queries quickly.
Buyers are welcome to visit our factory in Tianjin or request a virtual factory tour. We regularly exhibit at Middle East industry events and welcome long-term cooperation with distributors, contractors and engineering companies.
Do you offer technical support after purchase?
Yes. Our engineers provide specification guidance, installation advice and document support for the lifetime of the order. We also welcome feedback that helps us improve product quality and service.
Packaging, Payment Terms and Delivery
Every order is packed in seaworthy export packaging designed for long sea voyages to the Gulf: products are wrapped with waterproof or VCI-treated film, protected with edge guards and fixed on pallets, skids or in wooden crates, with fumigation certificates provided where required. The packaging standard can be adjusted for your handling equipment - for example, open-top containers for pipe bundles or flat-rack containers for long profiles.
Standard payment terms are 30% T/T deposit with 70% balance paid against a copy of the bill of lading, or an irrevocable L/C at sight for larger project orders. We can also accept other agreed payment methods for established customers. Typical minimum order quantities range from 10 to 20 metric tons depending on the product, and mixed-size or mixed-product container loading is welcome for distributor orders.
Our export department issues complete English documentation with every shipment: commercial invoice, packing list, bill of lading, EN 10204 3.1 Mill Test Certificate, certificate of origin and insurance certificate. This documentation set is prepared to meet the customs and authority requirements of each GCC country, saving you time at the port of destination.
What Incoterms can you provide?
We quote FOB Tianjin, CFR and CIF to any Gulf port, and DDP door-to-door for container shipments. Our logistics team can recommend the most cost-effective shipping option for your quantity and destination.
Can we receive samples before placing a bulk order?
Yes. Small samples can be shipped by express courier (DHL, FedEx or UPS) for your evaluation, with the sample cost refunded against your first order.
Do you offer regular supply contracts for distributors?
Yes. We welcome annual supply agreements with fixed pricing and delivery schedules, and we prioritize production slots for contract customers during peak seasons.