What standards do these pipes comply with?

The pipes comply with GB/T 23257-2017 (Chinese National Standard), ISO 21809-1 (International Standard), and DIN 30670.

What is the minimum order quantity (MOQ)?

The minimum order quantity is 1 set.

What are the payment terms?

Payment terms include LC, T/T, D/P, PayPal, Western Union, and Small-amount payment.

What is the lead time for production?

The average lead time is within 15 workdays or one month, depending on the season.

Does the company offer OEM or ODM services?

Yes, the company provides OEM and ODM customization services, allowing for customization from samples.

Durable Large Diameter DN 30-4000 Pipe for Long-Term Protection Underground Water Supply

Name: Durable Large Diameter DN 30-4000 Pipe for Long-Term Protection Underground Water Supply
Brand: Tianjin Fuxiang Steel Pipe Manufacturing Co., Ltd.
SKU: 1926720096

Tianjin, ChinaTianjin Fuxiang Steel Pipe Manufacturing Co., Ltd.

US$500.00

10 Pieces

Product specifications

Type

Product profile

Customization

Available

Application

Construction Industry, Oil and Gas Industry, Water Treatment Plants

certification

ISO9001

Model NO.

DN 30-4000

Length

Custom Length

Outer Diameter

Surface Finish

3LPE Coating

Wall Thickness

Schedule 80

Coating Structure

3lpe Three-Layer

Material Grade

X42/X52/X60/X70/X80

Corrosion Resistance

Underground 30+ Years

Application Scenario

Oil/Gas Pipeline

Specification

Customizable

Trademark

Origin

China

HS Code

7305110000

Production Capacity

50000

Key features

3LPE Anti-Corrosion Structure: Three-layer system: FBE epoxy, adhesive, and PE outer layer for superior protection.

50+ Years Design Life: Engineered for long-term underground use with corrosion resistance exceeding 30 years.

Wide Diameter Range: Available in outer diameters from 40mm to 4000mm for large-scale pipeline projects.

Flexible Customization: Customizable length, coating structure, and material grades (X42-X80) to suit needs.

Certified Quality Standards: Complies with GB/T 23257-2017, ISO 21809-1, and DIN 30670 international standards.

OEM/ODM Services: Professional source factory offering OEM and ODM customization services.

Smooth Inner Wall: Reduces fluid friction for efficient transport in oil, gas, and water pipelines.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceFast DeliveryQuality Assurance

Tianjin Fuxiang Steel Pipe Manufacturing Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 1year CertifiedNearest Port: Tianjin PortAverage Response Time: ≤0.28h

AI-Powered supplier vetting

SummaryThe supplier is a manufacturer specializing in anti-corrosion pipes and steel products, with three production lines and stated 3LPE output capacity. It provides customization from samples, ODM services, and OEM services for popular brands. Quality-related strengths include ISO 9001:2015 and ISO 45001:2018 management-system certifications, quality assurance in quality-control processes, and an environmental impact assessment report. However, the evidence also shows gaps: no written procedures or records for corrective/preventive actions, complaint handling, or finished-product inspection records; no valid manufacturing-capacity contract with an affiliated subcontractor; no SDK, overseas warehouse, overseas showroom, overseas agents or branches, or offline trade-show participation. Financial information supplied for 2024 and 2025 reports zero operating revenue, cost, gross profit, and operating profit, which creates uncertainty regarding financial credibility. No cooperation with Fortune 500 companies is...

Supplier typeThe company is explicitly described as a professional manufacturer specializing in the research, development, production, and sales of anti-corrosion pipes and various steel products. This supports classification as a manufacturing supplier rather than only a trading or service intermediary.

CertificationsThe supplier reports ISO 9001:2015 and ISO 45001:2018 management-system certificates, plus other product-compliance and sustainability certifications. It also has a factory environmental impact assessment report, although the specific standards covered by the unspecified certifications are not provided.

After-Sales capabilityThe supplier has not provided written procedures or records for corrective and preventive actions or effective customer-complaint handling. It also lacks overseas warehouses, showrooms, agents, and branches, although it can offer several quotation terms and has in-stock service capability; the documented service-system weaknesses are explicit.

Financial creditThe supplied financial data for 2025 reports zero operating revenue, operating cost, gross profit, and operating profit, while the two-year information also reports zero operating revenue. These stated figures do not establish positive operating performance and create a material concern regarding financial credibility.

R&D capabilityThe supplier reports no available SDK and no new products during the past year. ODM service is available, but the evidence does not demonstrate recent product innovation or software-development capability.

Production capacityThe supplier operates three production lines, including shot blasting, heating, 3PE coating, cooling, and pipe-processing equipment, and reports 3LPE output of 100,000,000 square meters. It also states a one-month peak-season fulfillment time and has inventory capability; however, no valid contract exists between the factory and an affiliated subcontractor, which is a documented capacity-management deficiency.

Customization capabilityThe supplier explicitly offers customization from samples and provides ODM services, indicating the ability to develop or manufacture customized products. Its OEM service for popular brands further supports this capability.

Client casesThe supplier reports no cooperation with Fortune 500 companies, so no major-brand customer case is evidenced by the provided information. A repeat-buyer preference of 50%–80% is reported, but it does not identify specific customers or independently establish documented customer cases.

Product Q&A

Q:What is the structure of the 3LPE anti-corrosion coating?

The 3LPE coating consists of three layers: a fused epoxy powder (FBE) base layer for adhesion, an adhesive intermediate layer, and a polyethylene (PE) outer layer for mechanical protection and waterproofing.

Q:What is the expected lifespan of these pipes?

The design life can reach over 50 years under standard conditions, with corrosion resistance lasting more than 30 years in underground environments.

Q:What are the available outer diameter and wall thickness ranges?

The outer diameter ranges from 40mm to 4000mm, and the wall thickness ranges from 4mm to 20mm.

Q:Can the pipe length be customized?

Yes, the length is customizable. Standard lengths are 6m or 12m, but custom lengths are available upon request.

Q:What materials and grades are available for the steel pipe?

The base material is carbon steel with grades including Q235B, L245, L360, Q345B, and X42-X80.