What is the lead time for delivery?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

What surface treatments are available?

We offer bare pipe, black pipe, and black painted surface treatments.

Which ports can you ship from?

We ship from Qingdao Port and Tianjin Port.

101.6X101.6mm ASTM A53 Square Steel Pipe Rectangle Pipe Seamless Square Pipe Welded Square Pipes

Name: 101.6X101.6mm ASTM A53 Square Steel Pipe Rectangle Pipe Seamless Square Pipe Welded Square Pipes
Brand: Qingdao Ironsteel International Trading Co., Ltd.
SKU: 1899691895

Shandong, ChinaQingdao Ironsteel International Trading Co., Ltd.

US$500.00

5-49 Tons

US$480.00

50-99 Tons

US$450.00

100+ Tons

Product profile

Customization

Available

Type

Seamless, Welded

Technique

Hot Rolling/Cold Rolling/ERW

Material

Carbon Steel

Surface Treatment

Bare Pipe, Black Pipe, Black Painted

Usage

Pipeline Transport, Construction & Decoration, Special Purpose

Section Shape

Square, Rectangle

Size

1/2''~16''

Thickness

Sch10~Sch40

Length

6 Meters

Delivery State

Annealing, Galvanized

Transport Package

Standard Seaworthy Packing

Specification

ASTM A53

Origin

China

HS Code

73066100

Production Capacity

2000tons Per Month

Key features

Wide Size Range: Square tubes from 10x10mm to 1000x1000mm and rectangle tubes up to 900x900mm available.

Multiple Standards: Complies with ASTM A500, ASTM A53, JIS G3466, EN10210, and GB/T standards.

Various Steel Grades: Available in Gr.B, Gr.C, Q195, Q235, SS400, 20#, 45#, and Q345B.

Seamless and Welded: Both seamless and welded square and rectangle steel pipes are supplied.

Flexible Customization: Offers full customization, minor customization, and customization from samples or designs.

Diverse Surface Options: Surface treatments include bare pipe, black pipe, and black painted finishes.

Fast Off-Season Delivery: Lead time within 15 workdays during off-peak seasons.

ISO9001 Certified: Management system certified under ISO9001:2015 for quality assurance.

Company profile

Importers and ExportersYears of Export ExperienceManagement CertificationHigh Repeat Buyers Choice

Qingdao Ironsteel International Trading Co., Ltd.

Shandong, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 20 years CertifiedNearest Port: Qingdao Port, Tianjin PortAverage Response Time: ≤0.91h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier offering 3D software design, ODM, OEM, and broad customization services. It reports quality-related certification support, including API, ISO, IBR, and SGS certifications, and holds an ISO9001:2015 certificate. Production and service lead times are stated as within 15 working days in both peak and off-peak seasons, with 11–20 quality-control staff and North America as the primary export market. However, the supplier has no available SDK, launched no new products in the past year, has only one year of R&D engineer experience reported, and lacks overseas showrooms, agents or branches, and offline trade-show participation. Environmental assessment documentation, raw-material traceability status, quality assurance status, and several process records are incomplete or unavailable. OEM service for popular brands provides evidence of customer-related experience, but no specific customer names or cases are supplied.

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier and provides 3D software design services. It also offers ODM and OEM services, indicating both technical-service and manufacturing capabilities.

CertificationsThe supplier states that it can provide certifications such as API, ISO, IBR, and SGS according to customer requirements, and specifically reports an ISO9001:2015 certificate. This is explicit evidence of certification-related capability, although no separate certificate details or validity dates are provided.

After-Sales capabilityThe supplier has no overseas showroom, overseas agent or branch, or offline trade-show participation, and reports zero countries with overseas services. It has written procedures for corrective actions and complaint handling, but no written records, so international after-sales coverage and documented execution remain limited.

R&D capabilityThe supplier provides professional technical services, 3D design, ODM, and customization, but reports no available SDK and no new products launched during the past year. Only one year of total R&D engineer experience is stated, while product-information R&D capability is also marked as having no new products, limiting evidence of recent innovation output.

Production capacityThe supplier reports 11–20 quality-control staff, an annual production-output range, and lead times within 15 working days during both peak and off-peak seasons. These statements support production and fulfillment capability, although detailed production capacity, equipment, and factory performance records are not provided.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. Its stated 3D design, ODM, and OEM services further support a broad ability to adapt products to customer requirements.