Large Diameter 16mm-426mm 20# 45# Seamless Hot Rolled Carbon Steel Pipe for Construction Projects

Name: Large Diameter 16mm-426mm 20# 45# Seamless Hot Rolled Carbon Steel Pipe for Construction Projects
Brand: Jiangsu Changchen Materials Co., Ltd.
SKU: 2329145845

Jiangsu, ChinaJiangsu Changchen Materials Co., Ltd.

US$420.00

1-49 Tons

US$399.00

50-199 Tons

US$375.00

200+ Tons

Product profile

Customization

Available

After-sales Service

Online Technical Support, After-Sales Service for

Warranty

No After-Sales Service

Model NO.

Hot Rolled 20# 45# Seamless Pipe

Type

Seamless

Technique

Hot Rolled

Material

Carbon Steel

Surface Treatment

Black/ Oiled/ Anti-Rust Painted

Usage

Hydraulic/Automobile Pipe, Machinery Industry, Chemical Industry, Mining, Construction & Decoration

Section Shape

Round

Material Grade

20#, 45# Carbon Structural Steel

Processing Service

Cutting, Machining

Application

Mechanical Processing, Construction Structure

Standard

GB/T8162, GB/T8163

Transport Package

Steel Bundles with Straps, Wrapped by Waterproof W

Specification

OD: 16-426mm, WT: 2.5-40mm, Length: 6m/9m/12m

Trademark

OEM & ODM Acceptable

Origin

Jiangsu, China

HS Code

7304511000

Production Capacity

5000000

Key features

Customizable Dimensions: Outer diameter 16-426mm, wall thickness 2.5-40mm, with custom cut-to-length service available.

Multiple Surface Treatments: Options include black hot-rolled finish, oiled, or anti-rust painted based on customer requirements.

High Mechanical Strength: Manufactured via hot-rolled seamless process ensuring excellent toughness and machining performance.

Mill Test Certificate: MTC is provided for all products, and third-party inspection is fully supported.

OEM & ODM Services: Customization from samples and designs is available for tailored production needs.

Fast Delivery: Factory direct supply with large stock ensures quick turnaround within 15 workdays.

Wide Application Range: Suitable for mechanical processing, engineering machinery, and construction structural parts.

ISO 9001 Certified: Manufacturing process adheres to ISO9001:2015 management system certification standards.

Company profile

Fast DeliveryManagement CertificationR&D CapabilitiesQA/QC Inspectors

Jiangsu Changchen Materials Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 1 Year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.27h

AI-Powered supplier vetting

SummaryChangchen operates in metal materials, special steel, forgings, powder metallurgy, metal processing machinery, and cutting services. It reports customization from samples and designs, ODM availability, recent new-product development, CAD/PS-related R&D capability, and documented R&D inputs, outputs, reviews, verification, and validation. Production-related evidence includes valid contracts with associated subcontractors, inventory capability, raw-material traceability, and 100% finished-product inspection; however, only one quality inspector is reported. The supplier states that products can meet several national and international standards, but no specific certifications are identified. Overseas support is limited: there are no overseas agents or branches, warehouses, showrooms, or stated overseas service countries. Lead time is reported as within 15 working days in both peak and off-season. Financial information is insufficient for a reliable assessment, and no customer cases are provided.

Supplier typeThe supplier’s stated business scope covers sales of metal materials and products, special steel, forgings, powder metallurgy products, recycled resources, metal-processing machinery, and metal cutting services. This supports classification as a metal-material and metal-processing supplier, although the slices do not establish a more specific legal or manufacturing classification.

R&D capabilityThe supplier reports new products during the past year, R&D responsibilities covering new-product development, design drawings, production technical support, and customer specifications, plus CAD and PS software capability. It also has auditable R&D design-input, output, review, verification, and validation documentation, although no SDK is available.

Production capacityProduction-related evidence includes sawing and cutting equipment, metal cutting and processing activities, inventory capability, valid manufacturing contracts with associated subcontractors, raw-material traceability, and 100% finished-product inspection. The reported quality-control staffing is one inspector, while supplier-management procedures have no records, so capability is supported but operational depth is limited.

Customization capabilityChangchen explicitly provides customization from samples and designs, offers ODM services, and states that customized services can be developed according to customer requirements. Its R&D role includes preparing product specifications for customer approval, providing direct evidence of customer-oriented customization capability.