What certifications do the products have?

The products are certified with ISO9001, SGS, and BV.

What is the material grade of the pipe?

The material is carbon steel, with grades including Q195, Q215, Q235, Q355b, and ASTM A500.

What end treatments are available?

End treatment can be plain, threaded, punched, shrunk, or extended, depending on customer requirements.

High-Quality Q235B ERW Construction Pipe - 4 Inch Galvanized Steel

Name: High-Quality Q235B ERW Construction Pipe - 4 Inch Galvanized Steel
Brand: Shandong Kanghong Manufacturing Co., Limited
SKU: 2155855512

Shandong, ChinaShandong Kanghong Manufacturing Co., Limited

US$520.00-640.00

5 Tons

Product profile

Customization

Available

Type

Welded

Technique

ERW

Model NO.

Q235B, Q355B, ASTM A53

Material

Carbon Steel

Surface Treatment

Hot DIP Galvanized

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Food/Beverage/Dairy Products, Machinery Industry, Construction & Decoration, Special Purpose

Section Shape

Round

Standard

ASTM, GB, JIS, En

Grade

Q235B, Q355b, ASTM A500

Outer Dimension

21.3mm - 610mm

Wall Thickness

1.0mm - 12.0mm

Length

6m, 12m, as Customer's Request

Zinc Coating Weight

≥80G/M²

Zinc Coating Thickness

≥45μm

Yield Strength

≥235MPa

Tensile Strength

370-500MPa

Elongation

≥26%

Processing Service

Cutting, Threading, Bending

Size Tolerance

±0.2mm

MOQ

5 Tons

Certification

ISO9001, SGS, BV

End Thread

NPT / BSPT / Plain

Transport Package

Packed in Bundles

Trademark

KANGHONG

Origin

Shandong, China

Production Capacity

500000 Ton

Key features

Flexible Customization: Customizable outer dimensions (21.3-610mm), wall thickness (1.0-12.0mm), and length per customer request.

Multi-Process Service: Offers cutting, threading, and bending processing services to meet specific application needs.

Fast Lead Time: Delivery within 7 days for stock items with 6m length; 20-25 days for customized pipes.

Certified Quality: Products certified by ISO9001, SGS, and BV ensuring high quality standards for global markets.

Versatile Applications: Suitable for pipeline transport, boiler pipes, hydraulic systems, construction, and machinery industries.

OEM/ODM Support: Manufacturer provides OEM and ODM services with flexible customization from samples or designs.

Company profile

Importers and ExportersFast DeliveryQuality AssuranceProduction Process Visualization

Shandong Kanghong Manufacturing Co., Limited

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: Foreign trade business has just begun CertifiedNearest Port: TianjinAverage Response Time: ≤7.55h

AI-Powered supplier vetting

SummaryThe supplier is explicitly identified as a professional technical supplier specializing in stainless steel, carbon steel, galvanized steel, metal processing, and related products. It provides 3D software design and multiple forms of customization, including sample-based, design-based, full, minor, and flexible customization. Production is supported by factories with complete facilities, while stated quality controls include batch testing, quality assurance, and raw-material traceability. However, finished products are also described as being checked by packing staff, and no written corrective-action or complaint-handling procedures are available. The supplier states that it has exported to more than 50 countries, but another slice says foreign trade has just begun, creating inconsistency in export-history evidence. No certification information or sufficient evidence of financial credibility is provided. SDK availability is explicitly absent.

Supplier typeThe supplier is explicitly described as a professional technical supplier and as a manufacturer and seller of stainless steel, carbon steel, galvanized steel, metal products, mechanical parts, and related materials. Its registered business scope also includes metal cutting processing and import/export activities, supporting classification as a technical metal-product supplier.

After-Sales capabilityThe supplier states that it provides after-sales support and timely after-sales service through its international sales team, and presents customer-oriented service as a business principle. However, it also reports no written procedures or records for handling customer complaints or corrective and preventive actions, so the formal robustness of after-sales management is not demonstrated.

R&D capabilityThe supplier is identified as having professional technical R&D capability and offers 3D software design services with multiple customization modes. However, it explicitly has no available SDK, so the evidence supports product and design development capability but not software-development integration capability.

Production capacityThe supplier states that its production factories are located in other cities with complete supporting facilities and that it specializes in producing steel coils, sheets, pipes, mechanical parts, and related products. Quality assurance, batch testing, and raw-material traceability are also stated, although one slice says finished products are checked by packing staff, indicating that the detailed final-inspection structure is not fully clear.

Customization capabilityThe supplier explicitly offers customization from samples, customization from customer designs, full customization, minor customization, and flexible customization. Its sales team also states that it supports order customization, providing direct evidence of broad customization capability.