What is the warranty period?

We provide a three-year warranty.

Where are your warehouses located?

We have warehouses in Wuxi and Dongguan cities.

Q355D S355j2 Alloy Structural Seamless Steel Pipe for Engineering Structural Project

Name: Q355D S355j2 Alloy Structural Seamless Steel Pipe for Engineering Structural Project
Brand: HUNAN QILU INDUSTRIAL CO., LTD.
SKU: 2003620032

Hunan, ChinaHUNAN QILU INDUSTRIAL CO., LTD.

US$599.00-750.00

1 Ton

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

24 Hours Online

Warranty

Three Years

Model NO.

Q355D /S355J2/ST52-3N

Type

Seamless

Technique

Hot Rolled

Material

Alloy Steel

Surface Treatment

Polished

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

Payment Term

30% Tt Deposit, Balance Against Bl Copy

Length

3000-5800mm

Delivery Date

30 Days

Ex-Stock

Ut Standard

Sep 1921-84 D/D

Grain Size

ASTM E112

Non-Metallic Inclusiton

ASTM E45

Form

Round Bars/ Flat Bar / Blocks/ Tube

Process

Eaf+Lf+Vd+Forged+Heat Treatment(Optional)

Technology

Hot Rolled/ Forged/ Cold Drawn

Heat Treatment

Normalized;Annealed ;Quenched ;Tempered

Surface

Black; Peeled; Polished; Machined; Grinded; Turne

Test

Ensile Strength, Yield Strength, Elongation

Certificate

ISO/ Mill Certificate

Transport Package

Seaworthy Package

Trademark

Qilu

Origin

China

HS Code

7228400000

Production Capacity

400, 000ton/Year

Key features

Low Alloy High Strength: Yield strength not less than 295 MPa with good impact toughness and welding properties.

Comprehensive Heat Treatment: Options include Normalized, Annealed, Quenched, and Tempered to adjust mechanical properties.

Wide Size Range: Round pipes from 6-1200mm diameter, plates 6-500mm thickness, and bars up to 50T weight.

Multi-Surface Finish: Available in Black, Peeled, Polished, Machined, Grinded, Turned, and Milled finishes.

Extensive Testing: Includes tensile strength, yield strength, elongation, impact value, grain size, and ultrasonic tests.

Long-Term Warranty: Three years warranty coverage provided for all mechanical equipment.

24/7 Online Support: Technical assistance available 24 hours online for customer inquiries.

Global Export Experience: 11 years of export history with warehouses in Wuxi and Dongguan supplying 20000+ tons.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceFast DeliveryLow MOQ

HUNAN QILU INDUSTRIAL CO., LTD.

Hunan, China

Business Type: Manufacturer/FactoryExport Year: 2008-06-01Nearest Port: SHANGHAI, NINGBO, QINGDAOAverage Response Time: ≤4.43hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryThe supplier is identified as HUNAN QILU INDUSTRIAL CO., LTD., a China-based limited company with conflicting classifications as both a trading company and manufacturer/factory. It has broad steel-related business activities, extensive stated export markets, self-operated import/export rights, and eight years of export experience. Customization, ODM, and OEM capabilities are explicitly reported. However, service-management documentation is absent, including supplier approval, corrective-action, and complaint-handling procedures. No in-stock, overseas warehouse, showroom, agent, or branch capability is reported. Financial records are referenced for 2021–2023, but no substantive financial performance evidence is provided. Production volumes and staffing are stated, although the supplier’s trading-company classification creates uncertainty regarding direct manufacturing capacity. No certifications or customer cases are documented.

After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or customer-complaint handling. It also reports no in-stock service, overseas warehouse, showroom, agent, or branch capability, although lead times are stated as one month in both peak and off-season periods.

R&D capabilityThe supplier reports total R&D-engineer experience of 6–10 years and offers ODM services, indicating some design and development capability. However, it has no available SDK, and the slices do not provide concrete innovation outputs, patents, or product-development records.

Production capacityThe supplier states production categories covering cold-drawn material, steel round bar, steel plate, and steel pipe, with substantial annual output figures and 11–20 quality-control staff. However, its classification as both trading company and manufacturer/factory is inconsistent, so the extent of directly controlled production capacity requires verification.

Customization capabilityFlexible customization is explicitly reported, together with ODM service availability and OEM service for popular brands. These statements provide direct evidence of customization and outsourced-brand production capability.