What payment terms do you accept?

We accept payment at sight L/C, 30% T/T, LC, T/T, D/P, PayPal, and Western Union.

Do you offer OEM and ODM services?

Yes, we provide both OEM and ODM services with a team of 10 R&D engineers.

What are the available end types for the pipes?

Pipe ends can be plain, bevel, threaded, or grooved based on your needs.

Pre-Galvanized Gai Welded Steel Square & Rectangular 30X50 40X60 Hollow Section Tube

Name: Pre-Galvanized Gai Welded Steel Square & Rectangular 30X50 40X60 Hollow Section Tube
Brand: Tianjin RuiTong Iron & Steel Co., LTD.
SKU: 1930676542

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

US$500.00-650.00

50 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Welded

Technique

ERW

Model NO.

20x20-400x400

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

Round

Standard

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

End of Pipe

Plain/Be/Thread/Groove

W.T

1.0-20mm

Payment

at Sight L/C,30% T/T

Certificate

ISO9001

Tolerance

+-1-5%

Section

Round

Length

3-12m

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

21.3-609.6mm

Trademark

RUITONG

Origin

Tianjin of China

HS Code

73063090

Production Capacity

500000

Key features

Comprehensive Customization: Offers full, minor, and flexible customization from samples and designs.

Wide Application Range: Suitable for pipeline transport, boiler, oil/gas drilling, construction, and machinery.

Multiple Surface Treatments: Available in oil, black, varnish, hot-dipped galvanized, and pre-galvanized finishes.

Flexible Wall Thickness: Wall thickness ranges from 1.0mm to 20mm to meet diverse engineering needs.

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

Diverse End Options: Pipe ends available in plain, bevel, threaded, or grooved configurations.

Flexible Lengths: Standard lengths range from 3 meters to 12 meters for various projects.

OEM and ODM Services: Full OEM and ODM services available with 10 dedicated R&D engineers.

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.