What tests will be done before delivery?

Yield & tensile test, elongation test, -20temprature Charpy impact test and full dimension tolerance inspection.

Can we do punching and bending processing?

CNC punching, arch bending and special shape fabrication can be processed as construction drawings.

Are the certificates valid for EU engineering projects?

Formal MTC test reports in line with EN standard can be provided for third-party audit and project filing.

What is your minimum order quantity?

Flexible MOQ, support sample testing order and full container bulk orders for construction contractors.

How to avoid tube deformation during transportation?

Tightly bundled with high-tensile steel strips, reinforced with steel frame for large size sections to prevent bending and collision damage.

Durable S355jrh Mild Steel Square Tube for Construction Needs

Name: Durable S355jrh Mild Steel Square Tube for Construction Needs
Brand: Tianjin Zengze Steel Trading Co., Ltd.
SKU: 1941883512

Tianjin, ChinaTianjin Zengze Steel Trading Co., Ltd.

US$800.00

1-9 Tons

US$780.00

10-19 Tons

US$750.00

20-49 Tons

US$720.00

50+ Tons

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Quality Objection Within 10 Days Since Receiving

Warranty

6 Months

Model NO.

ZZ-SP-063

Type

Welded

Technique

ERW

Material

Alloy Steel, Carbon Steel, Stainless Steel

Surface Treatment

Black

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

Size

10-600mm

Thickness

0.5-16mm

Length

6m,9m,12m or as Required

Surface

Black Galvanized

Place of Origin

Tianjin, Hebei, Shandong

Loading Port

Tianjin, Qingdao, Shanghai

Steel Material

Alloy Steel, Carbon Steel, Stainless Steel

Steel Grade

Q195,Q235,Q345,304,316

Stock

Normal Size in Stock

Stock Quantity

More Than 5000tons

Packing

Standard Exporting Package

Delivery

Within 7 Days for Normal Size

Mtc

Along with Shipping Docs.

Shape

Square, Rectangle, Round

Payment

T/T L/C

Transport Package

Standard Exporting Package

Specification

Standrd size

Trademark

Zengze

Origin

Tianjin, Hebei

HS Code

7304900000

Production Capacity

10000 Tons Per Month

Key features

Cold Formed Precision: High-frequency welding and stress relief treatment ensure uniform wall thickness and flatness.

Comprehensive Surface Treatments: Options include hot-dip galvanizing, shot blasting, and anti-rust painting for outdoor durability.

Custom Deep Processing: Supports fixed-length cutting, end facing, hole punching, and arch bending per construction drawings.

EN 10219-1 Compliance: Fully compliant with European structural steel standard for EU project acceptance.

Lightweight High-Strength Design: Optimizes structural design and reduces total steel consumption compared to hot rolled profiles.

Flexible MOQ: Supports small trial orders and sample testing for construction contractors.

Complete Quality Certification: Includes MTC, tensile tests, yield strength tests, and low-temperature impact reports.

Wide size range of side width and wall thickness, fully meets diverse architectural and engineering design needs.

Custom fixed-length cutting, surface blasting and galvanizing available to match construction project requirements.

Strict batch mechanical & chemical inspection, complete MTC certificates, support third-party inspection and project acceptance.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceFast Delivery

Tianjin Zengze Steel Trading Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 17 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤0.90h CertifiedTerms of Payment: LC, T/T, D/P, etc.

About Our Factory & Business Background

AddressBeichen District Beicang Way Names Material, Tianjin, China

Plant Area50 square meters

Number of Employees2

Registered Capital5,000,000 RMB

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity100 Kg

Supply Chain Partners10

Our Production Capability & Technical Expertise

Main ProductsSteel And Laser Cladding Machine

R&D Engineers1 people

Our Industry Experience & Global Business Record

Year of Establishment2007-12-11

Main MarketsEurope, Domestic, Asia

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff1

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Cooperated with Fortune 500No

Product Q&A

Q:What is the difference between S275J2H and S275JR?

S275J2H has J2 low temperature impact property at -20temprature, suitable for cold area construction; S275JR only has room temperature impact resistance.

Q:Which standard does this square rectangular tube follow?

Strictly produced and tested according to EN 10219-1 European cold formed structural hollow section standard.

Q:Can these tubes be galvanized for outdoor use?

Yes, we provide hot-dip galvanizing, shot blasting and anti-rust painting service for corrosion protection.

Q:Do you support custom length and cutting?

6m/12m standard length, arbitrary fixed-length cutting, pipe end trimming and deburring are all available.

Q:Is the material suitable for building load-bearing framework?

S275J2H is designated structural grade with stable mechanical performance, widely approved for construction load-bearing system.