What quality standards do your pipes conform to?

Our pipes comply with ASTM A519, DIN 2391, EN 10305, and GB/T 3639, with full process quality control and material certifications.

How do you handle quality problems?

We respond within 12 hours and provide a solution within 24 hours, including free return, replacement, reprocessing, or compensation.

Alloy Steel Structural Square Pipe for Bridge Engineering Frame Tube

Name: Alloy Steel Structural Square Pipe for Bridge Engineering Frame Tube
Brand: Shandong Jingshang Steel Pipe Co., Ltd
SKU: 2285223165

Shandong, ChinaShandong Jingshang Steel Pipe Co., Ltd

US$620.00

1-9 Tons

US$600.00

10-49 Tons

US$550.00

50-99 Tons

US$520.00

100+ Tons

Sample price:US$10.00/branch.Request sample

Product profile

Customization

Available

After-sales Service

24-Hour Customer Service Response

Warranty

12 Months

Model NO.

10-300mm

Type

Seamless

Technique

Hot Rolled

Material

Carbon 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

Brand

Shandong Jingshang

Product Name

Seamless Steel Tube

Advantage

Quality+Competitive Price+Professional Service

Surface

Bare Pipelines, Rust Proof Coating

Delivery Time

7-21 Days

Transport Package

Standard Export Sea Suitable Packaging

Specification

customizable

Trademark

Original factory

Origin

Liaocheng, Shandong, China

Production Capacity

20000tons

Key features

High Precision & Stability: Smooth surface, tight tolerance, and uniform wall thickness for precision machining.

Customizable Sizes: Sizes 20x20mm-400x400mm and wall thickness 1-20mm, customizable per requirements.

Strong Load Resistance: High bending and torsion resistance, suitable for frames, columns, and beams.

Wide Material Range: Available in Carbon Steel, Alloy Steel, Stainless Steel, and various grades like Q345, 304.

Anti-Corrosion Options: Available in black, hot-dip galvanized, painted, or coated finishes for long service life.

Global Certifications: Compliant with ISO9001, SGS, CE, ASTM, and DIN standards for international export.

Flexible Delivery: Lead time 7-21 days, with customized packaging and logistics support worldwide.

Versatile Applications: Ideal for construction, machinery, oil/gas drilling, and hydraulic systems.

Company profile

Importers and ExportersHigh Repeat Buyers ChoicePatents AwardedIn-stock Capacity

Shandong Jingshang Steel Pipe Co., Ltd

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Flexible customization CertifiedExport Year: 2 years CertifiedNearest Port: QingdaoAverage Response Time: ≤2.65h

AI-Powered supplier vetting

SummaryShandong Jingshang Steel Pipe Co., Ltd. is a China-based limited company established in 2017, with 28 employees, more than 10 production lines, inventory capability, and stated annual output information. It demonstrates flexible customization, 3D software design services, professional technical supplier status, and new product development during the past year. Quality controls include finished-product inspection instructions, quality assurance, and raw-material traceability. However, the supplier has no management-system certification, lacks written records for complaint handling and corrective/preventive actions, and has no written procedures or records for effective supplier-service assessment. Manufacturing capacity is not supported by a valid contract with affiliated subcontractors. Overseas support is limited, with no overseas warehouse, showroom, agent, branch, or offline trade-show participation. Export activity and self-operated import/export rights are indicated, but export experience is stated...

Supplier typeThe supplier is identified as a professional technical supplier and a combined limited company, with a business scope covering metal-material manufacturing, bearing-steel production, and import/export activities. This supports classification as a manufacturing and technical supplier rather than only a trading intermediary.

CertificationsSupplier management-system certification is explicitly recorded as NIL. Although quality assurance and raw-material traceability are present, no formal management-system certification is evidenced.

R&D capabilityThe supplier is identified as a professional technical supplier, provides 3D software design services, offers flexible customization through R&D, and reportedly launched new products during the past year. These are explicit indicators of active technical and product-development capability.

Production capacityThe supplier reports more than 10 production lines, 20 professional technicians, over 100 workers in its company description, inventory capability, uniformly followed finished-product inspection instructions, and peak/off-season lead times within 15 working days. However, the manufacturing-capacity arrangement with affiliated subcontractors lacks a valid contract, creating a documented governance weakness despite the stated production resources.

Customization capabilityThe supplier explicitly customizes materials and specifications according to customer needs, samples, and drawings. Its R&D capability also provides flexible customization and 3D software design services, directly supporting customized product development.