Wholesale ASTM Scaffolding Hot Dipped Hollow Section Q345 Q345A Q345b Welded Galvanized Square Steel Tube Supplier, Suppliers

Section Shape

quadrate

Surface Treatment

Hot Rolled

Tolerance

±1%

Oiled or Non-oiled

Non-oiled

Invoicing

by theoretical weight

Product Description

📊 Product Attributes
Place of OriginShandong, China
Alloy Or NotIs Alloy
StandardGB
GradeS235 S235JR S235 G2H S275 S275JR S355 St37
Delivery Timewithin 7 days
ApplicationFluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe
Special PipeAPI Pipe, EMT Pipe, Thick Wall Pipe
Thickness1-200mm
Length12M, 6m, 6.4M
CertificateAPI, ce, BIS, JIS, GS, ISO9001
Processing ServiceBending, Welding, Decoiling, Punching, Cutting
MOQ1 Tons
MaterialS185, S235JR, S275JR, S355JR, S420NL, S460NL, S500Q, S550Q, S620Q, S690Q
Payment termT/T, L/C, D/P, D/A
Trade termsEXW/FOB/CFR/CIF/DDP/FCA/etc
⏳ Delivery & Lead Time
Quantity (metric tons) 1 - 28 29 - 50 51 - 80 > 80
Lead time (days) 7 15 25 To be negotiated
🛠 Customization Services
  • Customized logo (Min. order: 50 metric ton)
  • Customized packaging (Min. order: 50 metric ton)
  • Graphic customization (Min. order: 50 metric ton)
🔍 Production Process Overview
Process Flow

Round tube blank → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → tube removal → sizing (or diameter reduction) → cooling → straightening → extruded into square tube → hydraulic test (or flaw detection) → marking → warehousing

📋 Technical Specifications
Product NameSeamless square Steel Pipe
MaterialA53, ST33, A283, A135, ST37, A53, A106, ST35, A179, A214, A192, A226, A315, ST42, A106-B
Wall Thickness2-200mm
Unit Length3m, 5.8m, 6m, 11.8m, 12m, 13.5m or as per customers' request
SurfaceBare surface, varnish painting, galvanizing, other painting as per customers' request
PackingIn bundles with steel strip or in loose, non-woven fabrics packings or as per customers' request
ApplicationCivil engineering, architecture, steel towers, shipyard, scaffoldings, struts, piles for suppression of landslide and other structures
QualityProvide MTC (Mill Test) and accept customer's agent inspection
Supply Ability20000 Tons/Month
📸 Product Details
Product Image 1
Product Image 2
Product Image 3
📦 Packing & Logistics
Packing 1
Packing 2

Our packaging methods are mainly suitable for export pallet simple packaging, fumigation-free wooden boxes, iron packaging, etc., which can also be customized according to customer requirements.

Shipping

We have long-term strategic cooperative relationships with international shipping companies such as MSC, MAERSK, CMA CGM, COSCO, and international express companies such as DHL, FedEx, and UPS, ensuring the safety and timeliness of cargo transportation.

👥 Professional Team

Now there are different departments, each performing their own duties. There are a total of 36 international trade teams, dedicated to connecting agents, trading companies and direct users in major regions around the world. There are 25 technicians and more than 70 workers, and the annual output can reach 100,000 tons.

Team 1
Team 2
Team 3
Team 4
Team 5
Team 6
🏢 Facility Display
Facility 1
Facility 2
❓ Frequently Asked Questions
What is the Minimum Order Quantity (MOQ) for your steel pipes?
For standard products, the MOQ is 1-2 tons. For customized services such as logos or special packaging, the MOQ is 50 metric tons.
What materials and grades do you offer?
We provide a wide range of grades including S235, S235JR, S355, St37, and materials like A53, A106-B, ST35, and more, according to GB/ISO/JIS/ASTM standards.
How long does delivery take?
Inventory items can be delivered within 5-7 days. For custom-made orders, it typically takes 10-25 days depending on the quantity and specifications.
What processing services are available?
We offer comprehensive processing services including bending, welding, decoiling, punching, cutting, and heating.
Do you provide quality certification?
Yes, we provide Mill Test Certificates (MTC) for all shipments and accept third-party or customer agent inspections to ensure high quality.
What are your accepted payment terms?
We accept various payment methods including T/T, L/C at sight, D/P, D/A, West Union, and PayPal.

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