What can you purchase from us?

We can offer customized services for galvanized coils, galvanized sheets, galvanized pipes and galvanized profiles.

Why should you purchase from us rather than from other suppliers?

Dongtai Rucheng Mechanical and Electrical Technology Co., Ltd. is located in Yancheng City, Jiangsu Province. It is a professional supplier of surface treatment equipment for metal wire materials. The company has a professional technical team, and its specialized production lines include coil pickling, annealing and heat treatment, electroplating, phosphating and boronizing. Centered on technological innovation, lean management achieves high-quality and efficient operation, providing one-stop se

Versatile 21-4nwnb Bar for Enhanced Metallurgy Performance Solutions

Name: Versatile 21-4nwnb Bar for Enhanced Metallurgy Performance Solutions
Brand: Dongtai Ruicheng Electromechanical Technology Co., Ltd.
SKU: 2155721612

Jiangsu, ChinaDongtai Ruicheng Electromechanical Technology Co., Ltd.

US$4,300.00-6,500.00

1 Ton

Product specifications

Model

Product profile

Type

Alloy Steel Bar

Standard

AISI, ASTM, GB

Composition

21-4nwnb Austenitic Heat-Resistant Steel

Model NO.

21-4NWNb

Technique

Hot Rolled

Shape

Bar

Surface Treatment

Black (as-Rolled) / Polished / Peeled

Special Use

High Temperature & Carburization Resistant Steel

Application

Heat Treatment, Petrochemical Industry

Material Type

21-4nwnb Austenitic Heat-Resistant Steel

Diameter Range

φ4.50mm-φ80.00mm

Heat Treatment Method

Annealing, Solution Treatment, Quenching

Surface Condition

Smooth, Free of Cracks & Defects

Primary Application

Heat Treatment, Petrochemical Industry

Transport Package

Wooden Box

Specification

Per Customer's Requirement

Trademark

Rui Cheng

Origin

Dongtai City, China

Key features

Custom Heat Treatment: Options include annealing, solution treatment, quenching, and tempering to meet specific hardness and machining needs.

Custom Surface Finish: Offers mirror polish, turned, peeled, and customized roughness values beyond standard hot-rolled or ground finishes.

Custom Length Options: Standard 3m or 4m bars available with cut-to-length services to minimize material waste.

High Temperature Resistance: 21-4NWNb austenitic steel designed for carburization resistance and high-temperature working conditions.

Precision Ground Accuracy: Tighter tolerances (h8/h7/h6) available for high-precision applications in automotive and industrial systems.

Comprehensive Certification: Includes Mill Test Certificate (MTC) 3.1, EN 10204 compliant, with optional chemical analysis reports.

Versatile Application Scope: Ideal for engine valves, high-temperature fasteners, boiler components, and petrochemical equipment.

Company profile

High Repeat Buyers Choice

Dongtai Ruicheng Electromechanical Technology Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤0.19h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a professional manufacturing enterprise in metal product wire surface treatment, integrating R&D, production, and sales with a focus on innovation and quality. They offer extensive customization services and maintain a procedural approach to quality control and customer service. However, there is no evidence of certification holdings or overseas operational capabilities. The company has been exporting for one year, with 21-30% of sales from exports, but lacks facilities like overseas warehouses or showrooms.

Supplier typeThe supplier is a combined type company specializing in metal products and technical services, focusing on R&D, design, production, and sales.

After-Sales capabilityThe supplier has a comprehensive after-sales service system, responsible for installation, commissioning, and maintenance.

R&D capabilityThe company drives innovation with a professional design and production team, focusing on advanced and stable technology.

Production capacityThe supplier boasts a wide range of manufacturing equipment, including bending, laser cutting, drilling, milling, welding, sawing, and laser engraving machines.

Customization capabilityThe supplier offers extensive customization options, from minor to full customization, based on samples or designs.

Product Q&A

Q:Who are we?

Dongtai Rucheng Mechanical and Electrical Technology Co., Ltd. is located in Dongtai City, Jiangsu Province, China. Our factory has approximately 40 employees.

Q:When is the delivery time? Can it be cheaper?

It depends on your order. It will be delivered within 30 working days after receiving the advance payment. If you place many orders, the price can certainly be reduced.

Q:What are the payment terms?

Payment can be made by telegraphic transfer or by sight draft, and it should be made before shipment.

Q:How can we ensure that customers receive the goods smoothly after making the payment?

Don't worry, dear. We have included trade guarantee. You can place an order through the guarantee system. If we fail to deliver the goods, the deposit will be refunded to you.

Q:How do you ensure the quality of the products?

Don't worry, dear. We have implemented trade protection. If the products you receive have any quality issues, the payment can be refunded to you.