What quality standards do your pipes conform to?

Our pipes comply with ASTM A519, DIN 2391, EN 10305, and GB/T 3639. We provide material certifications (MTC) and quality inspection reports for each batch.

How are quality problems handled after receipt?

Contact us with order details and photos. We respond within 12 hours and provide a solution within 24 hours, including free return, replacement, or compensation. Lifelong technical support is included.

Carbon Steel Structural Rectangular Pipe for Construction Engineering Tube

Name: Carbon Steel Structural Rectangular Pipe for Construction Engineering Tube
Brand: Shandong Jingshang Steel Pipe Co., Ltd
SKU: 2285166065

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

Customizable Size: Sizes 20x20mm-400x400mm and wall thickness 1-20mm can be customized per requirements.

High Pressure Resistance: One-piece seamless structure ensures leak-proof performance under high pressure and temperature.

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

Anti-Corrosion Options: Offers black, hot-dip galvanized, and painted finishes for long outdoor service life.

Global Certifications: Complies with ASTM, ANSI, GB standards and holds ISO9001, SGS, and CE certificates.

Flexible Cooperation: Supports OEM/ODM, trial orders, and strategic procurement with flexible MOQ adjustments.

Fast Response: 24-hour customer service response with 12-hour initial reply for quality issues.

Versatile Applications: Ideal for construction, machinery, oil/gas drilling, and chemical industry structural needs.

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: ≤2.97h

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.

Product Q&A

Q:What are the main cooperation models?

We offer long-term strategic procurement, customized OEM production, sample trial orders, and regional agency distribution. Exclusive plans are available for large-volume buyers.

Q:What is the minimum order quantity (MOQ)?

The MOQ is 1 ton for trial orders of standard pipes and 5 tons for formal bulk orders. For customized products, the MOQ can be adjusted flexibly based on production conditions.

Q:How long is the production lead time?

Standard seamless steel pipes take 7-12 working days. Customized orders with special treatments take 15-25 working days. Regular progress updates are provided.

Q:What materials and specifications do you supply?

We supply 10#, 20#, 45# carbon steel, Q355B, and 304/316 stainless steel. Specifications range from 4mm to 620mm outer diameter and 0.5mm to 100mm wall thickness.

Q:Do you provide customized processing services?

Yes, we offer cutting, chamfering, bending, drilling, tapping, galvanizing, phosphating, and heat treatment based on customer drawings and technical parameters.