What is the minimum order quantity?

The minimum order quantity is 1.

What surface treatments are available?

Available treatments include Oil, Black, Varnish, Hot Dipped Galvanized, and Pre-Galvanized.

What grades of steel are used?

We provide Grade A, Grade B, Grade 250, and Grade 350 carbon steel pipes.

Factory Direct Sales Cold Rolled Seamless 20 X 40 Galvanized Square Rectangular Steel Pipe

Name: Factory Direct Sales Cold Rolled Seamless 20 X 40 Galvanized Square Rectangular Steel Pipe
Brand: Tianjin RuiTong Iron & Steel Co., LTD.
SKU: 1936299932

Tianjin, ChinaTianjin RuiTong Iron & Steel Co., LTD.

US$500.00-650.00

1 Ton

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

3month

Warranty

1year

Model NO.

10*10-400*400

Type

Welded

Technique

ERW

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

Standard

ASTM A53,A500,A252,A795,BS1387-85,GB/T3091,ISO R65

End of Pipe

Plain/Be/Thread/Groove

W.T

1.0-17mm

Payment

at Sight L/C,30% T/T

Certificate

ISO9001

Tolerance

+-1-5%

Section

Round

Length

5.8-6m as Usual

Main Use

Scaffolding Pipe, Structure Pipe, Fence/Door Pipe,

Alloy or Not

Non-Alloy

Grade

a,B,Grade 250,Grade 350

Trade Term

Fob/CFR/CIF

Surface

Oil, Black, Varnish, Hot Dipped Galvanized,Pre Ga

Transport Package

with Plastic Tarpaulin

Specification

10*10-40*40mm

Trademark

RUITONG

Origin

Tianjin of China

HS Code

73066100

Production Capacity

500000

Key features

Versatile Usage: Suitable for pipeline transport, boiler pipes, hydraulic, oil/gas drilling, and construction.

Standard Compliance: Meets ASTM A53, A500, A252, A795, BS1387-85, GB/T3091, and ISO R65 standards.

Customizable Options: Offers customization for standard, end of pipe, wall thickness, and surface treatment.

Flexible Payment: Accepts at Sight L/C, 30% T/T, LC, T/T, D/P, PayPal, and Western Union.

Quality Assurance: ISO9001 certified with 10 QA/QC inspectors and random finished product inspection.

Fast Delivery: Lead time within 15 workdays or one month depending on the season.

OEM/ODM Service: Supports full customization, minor customization, and customization from samples or designs.

Wide Size Range: Wall thickness from 1.0-17mm, length 5.8-6m, covering DN6-DN650.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExperienced Team

Tianjin RuiTong Iron & Steel Co., LTD.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 16 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier is a combined manufacturing and trading entity whose stated business includes metal-material manufacturing, wire-rope production, metal-material sales, and import/export activities. It reports broad customization, ODM and OEM capabilities, with 16 years of export experience. Quality and service processes are documented, including finished-product inspection, complaint handling, corrective actions, and supplier assessment procedures. It has inventory capacity and accepts multiple payment and quotation terms, but lacks overseas warehouses, branches, agents, showrooms, and offline trade-show experience. Financial information is represented only by reporting years, without assessable financial performance data. The supplier reports no available SDK and no established AI-based sustainable-development management capability. A significant operational concern is the absence of a valid manufacturing contract with associated subcontractors.

Supplier typeThe supplier is identified as a combined company, with business activities covering metal-material manufacturing, wire-rope products, metal-material sales, import/export, and technology import/export. Its combined facility is described as a spiral steel pipe production line, indicating a manufacturing-oriented operating profile.

After-Sales capabilityThe supplier has documented procedures and records for customer complaints and corrective/preventive actions, supporting a structured service-response process. However, it has no overseas agents or branches, no overseas warehouse, and no overseas showroom, which limits evidence of localized after-sales coverage.

R&D capabilityThe supplier reports new products during the past year, ODM services, and broad R&D-related customization capabilities. However, it has no available SDK and reports no established AI model for big-data processing and decision-enabled management, so innovation evidence is positive but incomplete.

Production capacityThe supplier operates a spiral steel pipe production line, has inventory capacity, and reports documented finished-product inspection and supplier-management procedures. It also states an average lead time of within 15 working days to one month, but the lack of a valid contract with associated subcontractors is a documented production-governance risk.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM capability, providing direct evidence of broad product-development and customization support.

Client casesThe supplier states that it provides OEM services for well-known brands and identifies its own-brand quality-control capability as RuiTong, with a stated quantity of two. These entries provide some customer or brand-related evidence, but no customer names, project details, volumes, or verifiable case descriptions are supplied.