Quick answer: ASTM A53 Grade B Galvanized ERW Steel Pipe from Sino East Steel — category: Galvanized Steel Pipe, supplied factory-direct from our mill in Tianjin. Standard: ASTM A53, A53, Grade B. Every shipment arrives with an EN 10204 3.1 mill test certificate. MOQ: 10-20 tons, lead time to Polish ports (Gdańsk, Gdynia, Szczecin): 15-25 days. Send sizes, grade and quantity for a quotation within 24 hours.
ASTM A53 Grade B Galvanized ERW Steel Pipe
ASTM A53 Grade B Galvanized ERW Steel Pipe — a factory-direct product from Sino East Steel, one of China’s certified steel manufacturers serving Polish importers, distributors and contractors since 2005. This product is supplied to ASTM A53, Grade B specifications, with EN 10204 3.1 mill test certificates, and is packed for sea freight to Gdansk, Gdynia, Szczecin and other Baltic and Northern European ports. Every order benefits from direct mill pricing, documented quality control and a professional export team that manages documentation, packing and shipping from one source.
This page provides the full technical picture of ASTM A53 Grade B Galvanized ERW Steel Pipe — available specifications, manufacturing background, typical applications, quality assurance, packaging and ordering process — so your procurement team can evaluate the product without chasing data across multiple suppliers. For an exact quotation matching your required sizes and quantities, contact our export office; a confirmed price and delivery schedule are normally provided within 24 hours.
Key Specifications at a Glance
| Parameter | Value |
|---|---|
| Standard | ASTM A53, A53, Grade B |
| Certification | EN 10204 3.1 MTC |
| Minimum Order Quantity (MOQ) | 10-20 tons |
| Lead Time | 15-25 days |
| Payment Terms | T/T, L/C |
| Export Packing | Seaworthy export packing |
Available Sizes & Range
| Item | Range | Notes |
|---|---|---|
| Round pipe | 21.3 – 219.1 mm | WT 1.2 – 12 mm |
| Square tube | 20×20 – 200×200 mm | WT 1.2 – 8 mm |
| Rectangular tube | 40×20 – 200×100 mm | WT 1.2 – 8 mm |
| Length | 3 – 12 m | random or fixed |
Standards, Grades & Equivalents
| Standard | Grade | Typical Use |
|---|---|---|
| EN 10255 / DIN 2440 | S195T – S235JRH | Threaded and socketed tubes |
| EN 10219 | S235JR – S355J2H | Cold-formed hollow sections |
| ASTM A53 / A123 | A, B | Galvanized welded and seamless |
| BS 1387 | Class A/B/C | Galvanized tubes |
| ISO 1461 | 40 – 600 g/m2 | Hot-dip galvanized coatings |
Typical Mechanical Properties by Grade
| Grade | Yield Strength | Tensile Strength | Typical Use |
|---|---|---|---|
| S235JR | 235 MPa | 360-510 MPa | Structural use |
| S275JR | 275 MPa | 410-560 MPa | General fabrication |
| ASTM A53 Gr.B | 240 MPa | 415 MPa | Pipe standard |
| Q235B | 235 MPa | 370-500 MPa | Economical grade |
Hot-Dip Galvanized Steel Pipe for Long-Lasting Outdoor Service
Hot-dip galvanized steel pipe is carbon steel pipe coated with a protective zinc layer, giving it strong resistance to corrosion in outdoor, humid and industrial environments. It is one of the most widely specified steel products in Europe — used for fencing, greenhouses, water supply lines, scaffolding, handrails and structural frames. Sino East Steel produces galvanized round pipe, square and rectangular tube in wall thicknesses from 1.2 mm to 12 mm, with zinc coating weights from 40 to 600 g/m² to match EN ISO 1461 or ASTM A123 requirements. Each length is fully immersed in molten zinc, so both the outside and the inside surface receive the same coating protection.
Hot-Dip Galvanizing Process
The base pipe is first cleaned in acid and fluxed, then immersed in a bath of molten zinc at approximately 450°C. The metallurgical bond formed between iron and zinc produces a tough, self-healing coating that protects the steel even where the surface is scratched. After galvanizing, the pipe is cooled, inspected for coating uniformity and thickness, and cut or threaded as required. For buyers who need a consistent, certified coating, we offer batch certificates confirming coating weight and adhesion per the applicable standard.
Applications
Galvanized pipe is a workhorse in the Polish market: agricultural buildings and livestock housing, fencing and gates, greenhouse frames, sports equipment, playground structures, cable trays, water and irrigation lines, ventilation ducting and general structural fabrication. Square and rectangular galvanized tube is especially popular with fabricators of railings, carports, solar mounting frames and lightweight steel structures, where the zinc layer eliminates the need for immediate painting.
Choosing the Right Coating and Size
For outdoor exposure in Poland’s climate — freeze-thaw cycles, road salt and high humidity — we recommend a minimum zinc coating of 275 g/m² (Z275), while coastal installations benefit from 400–600 g/m². Select round pipe for water and gas lines, and square or rectangular tube for structural and framing work. If you will weld after galvanizing, note that the weld area needs local touch-up with zinc-rich paint to maintain protection.
Product Advantages for Polish Fabricators
Galvanized pipe from our Tianjin plant arrives with the zinc coating already applied and certified, saving Polish fabricators the cost, lead time and environmental paperwork of local galvanizing. The uniform hot-dip coating covers the full length, including the bore, so cut pieces maintain protection at the ends when cut edges are touched up. Because we control the whole process — steel, forming, welding and galvanizing — we can deliver mixed orders of round, square and rectangular sections in one container, which simplifies logistics for distributors who stock several profiles. For greenhouse builders, fencing manufacturers and railing fabricators, this single-source approach keeps both unit cost and coordination effort low.
Quality Control & Certification
Every batch of material delivered from our Tianjin plant passes through a documented inspection routine: chemical composition analysis, tensile and yield testing, dimensional checks and, where applicable, hydrostatic or flattening tests. Each consignment ships with an EN 10204 3.1 mill test certificate (MTC) and batch traceability records, so your incoming inspection at Gdansk, Gdynia, Szczecin or any other EU port is straightforward. The factory operates under an ISO 9001:2015 quality management system and is independently audited by SGS and TUV Rheinland for production capacity and export reliability.
Inspection & Testing Before Shipment
Before any material leaves the plant it passes through a defined inspection gate. Dimensional checks are performed against the ordered specification, surface quality is inspected visually and with instruments where required, and the relevant mechanical and chemical tests are verified against the mill certificate. For pipe and tube products, hydrostatic and non-destructive testing results are reviewed against the standard’s acceptance criteria. Customers who request it can witness the inspection or receive photographs and video of the loaded goods before the vessel sails — a practical way to build confidence without travelling to China.
Export Documentation Included
Every order is shipped with a complete documentation set: commercial invoice, packing list, bill of lading, certificate of origin, and the EN 10204 3.1 mill test certificate with heat numbers and test results. Where your project requires third-party inspection, we can arrange SGS, TUV or Bureau Veritas inspection before loading, with the inspection report issued in English for easy clearance in the EU.
Why European Buyers Source This Product from Sino East Steel
Importing steel from China to Poland is a routine, well-understood process when you work with a manufacturer that has done it hundreds of times. Sino East Steel combines factory-direct pricing with export experience across the EU, so you avoid the margin stack of trading companies and the documentation delays that slow down first-time imports. Our export team prepares commercial invoices, packing lists, certificates of origin, and the EN 10204 3.1 mill certificates your quality department and customs broker expect. We also coordinate vessel booking from Tianjin/Xingang to Baltic ports, and for regular customers we can hold production slots so repeat orders keep your warehouse stocked without interruption.
Because we are the manufacturer, specification changes, coating requirements, packing instructions and delivery dates are agreed directly with the people who control the production line. This transparency is what distributors and contractors in Poland value most: one accountable partner, one set of documents, and material that matches the sample on every shipment.
Packaging & Delivery to Poland and the EU
Products are packed in seaworthy export condition: steel strapping, waterproof wrapping, and wooden or steel pallets where required, with clear marking for safe handling. For pipe and tube orders we use the standard export bundle format with plastic end caps on request. Sea freight to Polish and Baltic ports (Gdansk, Gdynia, Szczecin, Klaipeda) is arranged from Tianjin or Xingang port, with typical lead times of 15–25 days after production. FCL and LCL options are both available, and mixed-container consolidation is offered for regular customers who combine several product lines in one delivery.
Customization & Value-Added Services
Beyond standard supply, our finishing lines can prepare material for your exact production step: cutting to length, drilling, bevelling, threading, coating, marking and custom bundling per your drawings. Packaging can be adapted to your handling equipment — pallets, frames, slings or individual protective wrapping — and private labeling is available for distributors who resell under their own brand. For customers with regular monthly programs, we schedule production slots so that reorder quantities arrive on time, allowing you to run leaner stock without risking supply gaps on your own production line.
Technical Support & After-Sales Service
Our export engineers support you from specification to installation: confirming grade and size selections, advising on coatings and packing for your climate and handling equipment, and answering technical questions from your quality department. After delivery, we keep the batch records on file and can issue additional documentation, arrange replacement paperwork, or support you in the rare case of a claim. For Polish customers this means a single point of contact who knows your orders, your specifications and your delivery history — service that trading intermediaries rarely match.
Storage & Handling on Site
To protect the material between delivery and installation, store it off the ground on sleepers, keep it dry and allow air circulation between layers. Galvanized products should be separated from black steel to avoid zinc staining, and painted or polished surfaces should keep their protective wrapping until installation. When lifting, use fabric slings or spreader bars for long lengths to avoid damage. Our packing lists indicate bundle weights and lifting points, and our export team can advise on safe unloading at your warehouse or construction site.
How to Order & Request a Quotation
To receive a firm quotation, please send your required specification: grade and standard, dimensions, quantities (in tons or pieces), end use, and the destination port in Poland or the EU. Our export team replies within 24 hours with pricing, availability and a proposed shipping schedule. We work with T/T and L/C payment terms, and for established EU customers longer payment arrangements can be discussed on a project basis.
Request a quote: use the contact form, WhatsApp +86-186-2208-8833, or email [email protected].
Frequently Asked Questions
Is the zinc coating applied inside the pipe as well?
Yes — the hot-dip process coats the full surface, inside and outside, because the pipe is immersed in the molten zinc bath. This is important for water-carrying lines where internal corrosion would otherwise shorten service life.
Can you supply threaded and coupled galvanized pipe?
Yes. Threading, coupling and socket ends can be prepared in our finishing line, and we also supply plain-end pipe for welded connections or grooved couplings.
What documents do you provide with each shipment?
Each shipment includes the EN 10204 3.1 mill test certificate, packing list, commercial invoice and bill of lading. Inspection reports and third-party certificates (SGS, TUV, Bureau Veritas) can be arranged before loading if your project requires them.
Can you supply to Polish and European standards?
Yes. We regularly export to EN and DIN specifications used across the EU, including EN 10219, EN 39, EN 10210, EN 10305 and DIN 2440, in addition to ASTM and API standards. Tell us the standard your project specifies and we will quote accordingly.
What are your MOQ and lead times?
MOQ depends on the product and size — typically from 1 to 10 tons for standard lines. Production and shipping to Polish ports normally takes 15–25 days from order confirmation.
Do you ship to Polish ports and handle customs paperwork?
Yes. We ship FOB Tianjin/Xingang, CIF or CFR to Gdansk, Gdynia, Szczecin and other Baltic ports, and we prepare the export documentation (commercial invoice, packing list, bill of lading, certificate of origin, mill certificates) needed for import clearance in Poland.
Can we arrange a pre-shipment inspection?
Yes. Third-party inspection by SGS, TUV, Bureau Veritas or your own representative can be arranged before loading, and the inspection report is provided before the vessel departs.
Do you offer samples before a full order?
For most products we can provide small samples or cut pieces so your quality department can verify the material. Sample cost is credited against the first order for regular customers.
About Sino East Steel — Sino East Steel is a factory-direct manufacturer and exporter of carbon steel, galvanized steel and structural steel products, operating from a 65,000 m² production base in Tianjin, China. Since 2005 the company has built a steady export record across Europe, the Middle East and the Americas, supplying distributors, contractors and engineering companies that require consistent quality, complete documentation and dependable delivery. For Polish buyers, this means a single certified source for pipes, coils, sheets, bars and structures, with every shipment supported by mill test certificates and traceable batch records.
