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Product video
Certifications CE

Hollow Section Iron Rectangle Steel 25mm 50mm 75mm Tube ERW Rectangular Weld MS Steel Pipe Square Galvanized Structural Per Kilo

Available for enquiry 5.0 · 2 reviews 70 sold
USD

$ 20.00 20.0 USD $ 20.00

Not Available For Sale

Minimum order quantity: 1000 Units

Key attributes

View all
Application
Other, Structure Pipe
Standard
ASTM, AISI, DIN, BS, JIS, GB, EN
Alloy Or Not
Non-Alloy
Grade
Q235,Q345,Q355,etc
Section Shape
Rectangular
Length
12 m(39.37ft), 6 m(19.69ft)
Product description
Product nameGalvanized square Rectangular steel tubeTypeHot-dip galvanized/ Pre-galvanized（Electro-galvanized ）
MaterialQ235B, S275JR,ASTM A106 Gr.B, 20#,Q355B, ASTM A500 Gr.C,S235JR, SS400Zinc layerSeamless pipe Average 85μm (local ≥70μm) Welded pipe Both sides ≥65μm (corner ≥45μm)
Welding methodHigh frequency welding (ERW) or submerged arc welding (SAW)PackingWooden pallet + wrapping film (moisture-proof), iron box (precision pipe)
StandardGB/T 3094, GB/T 6728,ASTM A500, ASTM A106,EN 10210-2, EN 10219-2,JIS G3466,GB/T 6725, GB/T 13793, ASTM A1085,BS 1387CertificationsPED 2014/68/EU, ISO 1461, CSA G40.21, AWS D1.1, TÜV Rheinland Class 4 anti-corrosion certification, AS/NZS 4792 (building pipes)
Cross-sectional shapeSquare (e.g. 15×15mm～500×500mm) Rectangular (e.g. 20×10mm～600×300mm) Special shapes (D-shaped/trapezoidal, custom molds required)Surface TreatmentWelded pipe Hot-dip galvanizing (HDG) is the main method Pre-galvanized sheet is welded (GI) and then zinc is added (higher cost) Seamless pipe Hot-dip galvanizing (HDG, zinc layer ≥ 85μm) Optional pre-phosphating treatment (to enhance the adhesion of spray paint)
Outer diameterSeamless pipe Square: 10mm - 400mm Rectangular: up to 800mm Welded pipe Square: 12mm - 500mm Rectangular: up to 600mmProduct ApplicationBuilding steel structures (stadiums/warehouses), solar racks/shelves systems, supermarket shelves/display cabinet frames, hydraulic cylinders/automobile chassis structural parts, high-end mechanical equipment frames (such as CNC machine tools)
Wall thicknessSeamless pipe：1.5mm - 30mm Welded pipe：0.8mm - 16mmsamplesYES
Length6m (fixed length), 5.8-12m (customized)delivery time3-5days(in stock)
payment termsTTcatelogPlease consult customer service to obtain
I know what you are worried about. So I will do my best to give you peace of mind.
Is the zinc layer at the corners uniform? How to test?Use metallographic sectioning method to measure the zinc layer at the corners (≥80% of the standard value), and provide a third-party report
Can non-destructive testing be performed?100% ultrasonic testing (UT) complies with EN 10246-3 standard
Internal weld treatmentSeamless pipes have no welds, which will indicate the zinc layer coverage of the inner wall
Marking methodLaser engraving standard number + batch number (complying with BS 729)
Is the weld strength up to standard?Provide a tensile test report (tensile strength ≥370MPa, in accordance with ASTM A500)
Does the zinc layer fall off at the weld point?Post-weld galvanizing process is adopted, and the bonding strength between the zinc layer and the substrate is ≥3.5N/mm² (DIN 50976)
Packing methodNude packaging (low cost) Wooden pallet + wrapping film (moisture-proof) Iron box (precision pipe)
Environmental protection requirementsRoHS 2.0 (cadmium
Is the weld position marked?It will be marked on the long side or short side to remind you of the load-bearing direction
Zinc flower sizeRegular zinc flower (general use) Small zinc flower (pre-painting treatment, e.g. automotive parts)
Special anti-corrosionCan be zinc-aluminum-magnesium coating (extended life by 2 times) Inner wall epoxy coating (for water pipes)
Can it meet customer special requirements?Yes, South American customers can provide you with SGS reports including Cu content test (anti-brittle cracking), European and American customers can provide you with CPP (corrosion protection plan) documents, etc.
Certifications & compliance
CE
Complies with EU standards
Description images
Product detail
Product detail
Product detail
Product detail
CE
Packaging and fulfilment
  • Step 1

    Payment and order readiness

    Minimum order: 1000 Units

    Payment terms, specifications, and order details are confirmed before preparation begins.

  • Step 2

    Preparation

    7 days

  • Step 3

    Packaging and dispatch

    Ocean freight via Maersk · Approx. shipping fee: $ 0.84 for 1 unit · Transit time: Est. 17-24 days

    Final packing, freight, and delivery dates are confirmed before dispatch.

Technical specifications
Other details 29 fields
Application
Other, Structure Pipe
Standard
ASTM, AISI, DIN, BS, JIS, GB, EN
Alloy Or Not
Non-Alloy
Grade
Q235,Q345,Q355,etc
Section Shape
Rectangular
Length
12 m(39.37ft), 6 m(19.69ft)
Technique
ERW, Saw
Tolerance
±1%
Surface Treatment
galvanized
Certificate
CE, ISO 9001, BSI, RoHS, SNI, Saso, BIS, PVOC, SONCAP, SIRM, TISI, KS, JIS, Gs
Special Pipe
Thick Wall Pipe
Oiled or Non-oiled
Slightly Oiled
Processing Service
Cutting, Bending, Welding, Punching
Delivery Time
within 7 days
Invoicing
By Actual Weight
Place of origin
China, Tianjin
Thickness (Specification)
CUSTOMIZED
Surface
zinc coated 200-700g/sqm
Shape
Round.square.Rectangular
Material
ASTM/AISI/SGCC/CGCC/TDC51DZM/TDC52DTS350GD/TS550GD/DX51D+Z Q195-q345
Usage
Construction Structure
MOQ
1000 Kilograms
Packing
Standard Seaworthy Packing
PRICE TERM
Ex-Work, FOB, CFR, CIF, FCA, etc
Technology
Hot Rolled Cold Rolled Galvanized
Selling Units
Single item
Single package size
6000X10X10 cm
Single gross weight
36.2 kg
Certifications & Compliance
CE
Lead time
7 days
Minimum order
1000 Units

Customer reviews

5.0 (2)
R
Riley O. Verified buyer
Tanzania Tanzania ·

delivered according to specification

J
Jordan J. Verified buyer
Saudi Arabia Saudi Arabia ·

It matched all my requirements and was good.

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