What standards do the products comply with?

Products comply with ASTM A53/A573/A283, BS1387-1985, GB/T3091-2001, GB/T13793-92, ISO630/E235B, JIS G3131, and JIS G3106.

What is the warranty period?

We provide a 2-year warranty for our products.

How are the products packed and shipped?

Packed by steel strips, woven cloth, or wooden pallets. Shipped by sea, air, or truck based on customer requirements.

Carbon Steel Square Rectangular Tube Durable and Anti-Corrosion Rectangular Pipe at Low Price

Name: Carbon Steel Square Rectangular Tube Durable and Anti-Corrosion Rectangular Pipe at Low Price
Brand: Shanghai Changzeng Metal Co., Ltd.
SKU: 2251101115

Shanghai, ChinaShanghai Changzeng Metal Co., Ltd.

US$498.00-558.00

1 Ton

Sample price:US$458.00/ton.Request sample

Product profile

After-sales Service

Support

Warranty

2 Years

Additional Service

Cutting, Drilling

Model NO.

Q235b

Product Name

Z Channel Purlin

After-Sale Service

Solve Any Problems for Clients

Company Years

12 Years

Shipping Service

Cheaper and Realiable

Delivery Time

7 Days

Quality Control

as Request

Place of Origin

Shanghai, China

MOQ

1ton

Package

Standard Seaworth Packing

Usage

Construction Structure

Payment Term

30%Tt Advance + 70% Balance

Transport Package

1. Big Od/ Bulk Small Od: Packed by Steel Strip

Specification

GB, ASTM, AISI

Trademark

Origin

Shanghai

Production Capacity

5000 Tons/ Month, 15000 Tons/ Season

Key features

Wide Size Range: Sizes from 20x20mm to 500x500mm with various thickness options available.

Multiple Material Grades: Available in ASTM A36, SS400, Q235, S235JR, S355, and other standard grades.

Flexible Customization: Supports full customization from samples/designs, including cutting, drilling, and bending.

Strict Quality Control: 100% finished product inspection with third-party options like SGS, BV, and ISO.

Fast Delivery: Lead time of 3-15 working days due to large stock and experienced export process.

Versatile Applications: Ideal for construction structures, shipbuilding, bridges, automobiles, and machinery.

Durable Anti-Corrosion: Carbon steel construction with optional hot-dip galvanized, pre-galvanized, or coated finishes.

Reliable After-Sales: 12 years of experience with support to solve any problems for clients.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceFast DeliveryLow MOQ

Shanghai Changzeng Metal Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 19 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.34h CertifiedTerms of Payment: LC, T/T, PayPal

About Our Factory & Business Background

AddressMeilan Lake, Baoshan District, Shanghai, China

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 Quantity1 Ton

Supply Chain Partners20

Our Production Capability & Technical Expertise

Main ProductsSteel Structure, Square Tube, Galvanized Steel Sheet Coil, Cold Rolled Steel Sheet Coil, Stainless Steel Sheet, Steel Channel, Steel H Beam, Angle Steel, Seamless Pipe, Round Tube

QA/QC inspectors1 people

Inspection Type for Finished Products100% inspection(Function inspection & Visual inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers1 people

Traceability of Raw MaterialsYes

Own BrandYes

Our Industry Experience & Global Business Record

Main MarketsSouth America, Southeast Asia/ Mideast, East Asia(Japan/ South Korea)

Repeat Buyers Choice50%~80%

Number of Foreign Trading Staff4

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Product Q&A

Q:What are the available material grades?

We offer ASTM 106, SS400, St37, St52, S235JR, S355TRH, Q195, Q235A-B, Q345A-E, 10#, 20#, 16Mn, ASTM A36, ASTM A500, and ASTM A53.

Q:Can the tubes be customized?

Yes, we support full customization from samples or designs, including cutting, drilling, bending, punching, and various surface treatments like galvanized or color painting.

Q:What is the minimum order quantity?

The minimum order quantity is 1 ton.

Q:What are the payment terms?

We accept T/T (30% advance + 70% balance), L/C, and PayPal.

Q:What is the lead time for delivery?

The lead time is 3-15 working days, depending on stock availability and order size.