Does the product have quality inspection before loading?

Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.

How to pack the products?

The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It caneffectively protect products from corrosion during ocean transportation.

40× 40mm Hot-Dipped Galvanized Square Steel Tube for Construction Projects

Name: 40× 40mm Hot-Dipped Galvanized Square Steel Tube for Construction Projects
Brand: Shandong Tongmao Special Steel Co., Ltd.
SKU: 2176997575

Shandong, ChinaShandong Tongmao Special Steel Co., Ltd.

US$600.00-1,000.00

5 Tons

Product profile

Customization

Available

Type

Seamless

Material

Carbon Steel

Surface Treatment

Galvanized

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose

Section Shape

Square

Item

Galvanized Steel Pipe

Od

10-610mm

Length

5.8-12m

Wt

0.8-60mm

Coatings

Top Coats :5 Micron Primer + 20 Micron Colour

Surface

Clean, Blasting and Painting According to Customer

Transport Package

Standard Packing

Specification

OD 10-610mm

Trademark

TONGMAO

Origin

China

HS Code

7306690000

Production Capacity

1000ton/Year

Key features

Hot-Dipped Galvanized Coating: Zinc coating ranging from Z200 to Z520 g/m2 for superior corrosion resistance.

Wide Material Selection: Available in Q195, Q215, Q235, Q345, SS330, SS400, and S235JR grades.

Multiple Welding Techniques: Offers ERW, EFW, and DSAW welding methods for various strength requirements.

Comprehensive Surface Options: Includes bare, black painted, galvanized, oiled, 3 PE, and FBE coatings.

Strict Quality Inspection: All products undergo hydraulic, eddy current, and infrared testing before shipment.

Flexible Customization: Customizable outer diameter, length, weight, and surface treatment per client needs.

Global Sample Availability: Samples can be sent to any location worldwide upon request.

Fast Delivery Time: Standard delivery within 7-15 days, subject to order volume and special circumstances.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceManagement Certification

Shandong Tongmao Special Steel Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Designs CertifiedExport Year: 10 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤6.05h

AI-Powered supplier vetting

SummaryThe supplier is a limited-company trading company with eight employees and a product scope covering copper, aluminum, steel, brass, and stainless-steel products. It has self-operated import/export rights, eight years of export experience, and exports account for 71%–90% of total sales. Production information states annual capacity of 500,000 tons for steel pipe and 10,000 tons for copper pipe, with peak- and off-season lead times both within 15 working days. However, the supplier reports no overseas showrooms, agents, branches, or offline trade-show participation, and has no written complaint-handling, corrective-action, or supplier-service assessment procedures. Quality controls include quality assurance, but finished products are randomly inspected and checked by packing staff, with one quality inspector and no raw-material traceability. Innovation and formal R&D capabilities are limited: no new products were launched in the previous year, and no 3D design, ODM, SDK, or popular-brand OEM services are...

After-Sales capabilityThe supplier has no overseas showroom, overseas agent or branch, or offline trade-show participation. It also has no written corrective-and-preventive-action procedures, complaint-handling procedures, or effective supplier-service assessment records, although it accepts multiple quotation and payment terms and reports lead times within 15 working days.

R&D capabilityThe supplier reports no new products in the previous year and does not provide 3D software design, ODM, SDK, or popular-brand OEM services. Its stated R&D-related service is customization from samples, indicating limited innovation capability rather than a documented product-development program.

Production capacityThe supplier provides stated annual productivity of 500,000 tons for steel pipe and 10,000 tons for copper pipe, with peak- and off-season lead times both within 15 working days. It has export experience of eight years, self-operated import/export rights, and export sales of 71%–90%; however, quality inspection is limited to random inspection, packing-staff checks, one inspector, and no raw-material traceability.

Customization capabilityCustomization from samples is explicitly available in both the R&D/design-related and product-capability information. No broader 3D, ODM, SDK, or formal product-development capability is stated, so the confirmed capability is sample-based customization.