Q235B ASTM A53 GB/T 3091

Welded Galvanized Pipe

Source pre-galvanized or hot-dip galvanized welded pipe with grade, OD, wall, length, ends, zinc requirement, inspection, MTC, and seaworthy bundle packing confirmed.

MOQ: Typically 1 container
Lead time: 7-21 working days after confirmation
Origin: China
Monthly supply: 5,000+ metric tons per month
Standards: ASTM A53, GB/T 3091
Surface: Pre-galvanized tube, Hot-dip galvanized after welding or fabrication, Passivated or lightly oiled where specified
Certificates: EN 10204 3.1 / MTC
Packing: Pipe and hollow-section lots are bundled by size and heat or lot where traceabi…

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PRODUCT TECHNICAL SPECIFICATION PLATE ORDER-SPECIFIC DATA

TECHNICAL METRICS

Material: Coated Steel
Form: Pipe
Primary Grade: Q235B
Primary Standard: ASTM A53

LOGISTICS & DISPATCH

MOQ: Typically 1 container
Lead time: 7-21 working days after confirmation
Origin: China
Monthly supply: 5,000+ metric tons per month

Full specifications

Full specifications
Property	Value
Galvanizing route	Pre-galvanized or hot-dip galvanized after fabrication; state route on RFQ
Tube dimensions	OD x wall x length with tolerance and mass basis
Ends	Plain, threaded, grooved, or fabricated as ordered
Coating acceptance	Zinc mass or thickness, appearance, and test basis per governing specification
Outer Diameter	Φ15-168.3mm
Use	Water, gas, fence and outdoor structures

Overview

Welded galvanized pipe combines a welded carbon-steel tube with a zinc-coated surface for structural, fencing, conduit, greenhouse, and general utility work. The RFQ must distinguish pre-galvanized tube from hot-dip galvanizing after fabrication because coating coverage, weld-area treatment, dimensions, finish, and applicable standards differ between the two supply routes. For a controlled quotation, the RFQ must identify the governing standard and grade, outside diameter or section size, wall thickness, length, end finish, quantity, coating, service, and destination port. The commercial review checks that the manufacturing route matches the intended duty before price release; welded, seamless, structural,…

Applications

Fencing, greenhouse, and light structural frames
Conduit and general utility fabrications
Outdoor tubular components after corrosion-class review

Surface options

Pre-galvanized tube
Hot-dip galvanized after welding or fabrication
Passivated or lightly oiled where specified

Processing & form

Fixed-length cutting
Plain, threaded, or grooved ends
Hole punching and fabrication by drawing
Bundle marking and end protection

RFQ documents & delivery

Packing, MTC, and inspection path — include them in your RFQ for an actionable quote.

Packing & delivery

Order-specific packing

Pipe and hollow-section lots are bundled by size and heat or lot where traceability is required. Export packing can include steel straps, waterproof wrapping, lifting points, bevel or thread protectors, end caps, and durable shipping marks. Bundle weight, loose-loading restrictions, container limits, discharge method, destination port, and any break-bulk lashing plan are confirmed before loading.

Quality assurance

Documents as ordered

Inspection is agreed against the purchase order, governing product standard, and any approved inspection and test plan. The review can cover grade and heat identity, dimensions, wall thickness, end preparation, visual condition, coating, hydrostatic testing, and NDT records where applicable. EN 10204 3.1 documentation and third-party witness points must be requested before production is released.

Supply confidence

Stock, inspection, and product uses

Fixed delivery proof plus this product’s applications — confirm stock, inspection, and end use before RFQ.

Steel bundles staged by lot in the warehouse

Warehouse & staged stock

Strapped coils and plates staged by lot so grade, thickness, and destination port can be matched quickly for shipment.

Factory capability Ask stock & lead time

Buyer verifying thickness and specs on site

Buyer visits & inspection

Overseas buyers and third-party inspectors are welcome to verify specs, heat numbers, and packing. SGS/BV support available.

Quality & standards Arrange inspection

Steel used in oil, gas, and pipeline work

Typical applications for this product

Typical uses for this product: Fencing, greenhouse, and light structural frames; Conduit and general utility fabrications; Outdoor tubular components after corrosion-class review. Share your end use, environment, and packing needs in the RFQ.

View oil & gas Quote for this use case

FAQ

What should an RFQ for Welded Galvanized Pipe include?

State base standard and grade, galvanizing route, OD, wall, length, ends, zinc requirement, application, quantity, packing, and port. A complete line-item specification is required before manufacturing route, availability, inspection, and packing can be confirmed.

What quality documents are available for Welded Galvanized Pipe?

The ordered document pack can include mill certificates, lot or heat identity, dimensional and visual inspection records, and product-specific test reports. Third-party inspection must be agreed before production or stock allocation.

How is Welded Galvanized Pipe packed for export?

Packing is selected from the product form, unit weight, handling method, destination climate, container or break-bulk limits, and discharge plan. Confirm the destination port and any storage constraints on the RFQ.

Request a Quote

Send the complete Welded Galvanized Pipe specification, quantity, inspection scope, packing preference, and destination port for review.

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Web RFQ: formal quote + document path
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