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 Precision Metallurgical Equipment Solutions

Name: Versatile 21-4nwnb Bar for Precision Metallurgical Equipment Solutions
Brand: Dongtai Ruicheng Electromechanical Technology Co., Ltd.
SKU: 2152115022

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

Tailored Heat Treatment: Options include annealing, solution treatment, quenching, and pre-hardening per requirements.

Specialized Surface Finish: Available in black, polished, peeled, or customized roughness values for precision needs.

High-Temperature Resistance: 21-4NWNb austenitic steel designed for carburization and extreme heat conditions.

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

Comprehensive Certification: Includes Mill Test Certificate (MTC) 3.1 and EN 10204 compliance with optional chemical reports.

Custom Alloy Composition: Special alloy compositions available upon request to match specific technical drawings.

Versatile Application Scope: Ideal for engine valves, boiler components, petrochemical equipment, and thermal power plants.

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: ≤1.27h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a combined metal-products manufacturing enterprise focused on wire surface-treatment equipment, with integrated R&D, design, production, sales, installation, commissioning, and after-sales support. It reports broad customization options, documented finished-product inspection instructions, and production equipment including bending, laser cutting, drilling and milling, welding, sawing, and laser engraving machines. Its export experience is limited to one year, with 21%–30% of sales from exports. Service procedures exist, but records are absent or approval documentation is incomplete. No SDK, overseas warehouse, showroom, overseas agent or branch, or offline trade-show participation is reported. Financial records are referenced by year, but no substantive financial results are provided. Environmental and fire-drill information is unknown.

Supplier typeThe supplier is identified as a combined company and a professional manufacturing enterprise for metal wire surface-treatment equipment. Its stated business scope includes sales of metal wire ropes and related products, chemical products excluding licensed chemicals, and technical services.

R&D capabilityThe supplier states that innovation is central to its development and reports a professional design and production team with senior engineers and technical personnel capable of customized solutions. However, it reports no available SDK, and no concrete patents, product innovations, or R&D performance metrics are provided.

Production capacityThe supplier identifies itself as a manufacturer with integrated R&D, design, production, sales, and service functions. Its listed equipment includes bending, laser cutting, drilling and milling, welding, sawing, and laser engraving machines, while its stated service system includes equipment production, installation, and commissioning.

Customization capabilityThe supplier explicitly reports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also states that experienced technical personnel provide customized designs and solutions for varying technical requirements.

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.