What is the chrome thickness and hardness?

Chrome thickness is typically 20-30 microns (or 15-50 microns), with a minimum hardness of 800HV.

What certifications does the company have?

Our company's products have passed ISO9000 certification.

Ck45 4140 20mnv6 Hard Chrome Plated Round Steel Piston Bar

Name: Ck45 4140 20mnv6 Hard Chrome Plated Round Steel Piston Bar
Brand: Qingzhou Dooharvest International Co., Ltd.
SKU: 796482282

Shandong, ChinaQingzhou Dooharvest International Co., Ltd.

US$1,200.00-1,400.00

1 Ton

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Journal Diameter Dimensional Accuracy

IT6-IT9

Journal Surface Roughness

0.63-0.16μm

Model NO.

DH-02Rod

Material

Carbon Steel

Tolerance

ISO F7

Material Grade

Ck45, 20mnv6, 42CrMo4

Axis Straightness

0.1/1000mm

Roundness

Dia. Tolerance / 2

Roughness

Max. Ra 0.2μm

Heat Treatment

None, Induction Hardened, Q+T

Hardened Depth

0.5-3.5mm

Chrome Thicknes

15-50 Microns

Chrome Layer Hardness

Min. 800hv

Package

Paper Sleeved, Shockproof Membrane, Wooden Case

Dia. Range

Ø12 - Ø320

Length Option

4m, 5.8m, 6m, 7.5m

Material Hardness

HRC15, HRC30, HRC55 Can Be Choice

Mechanical Properties

According to En 10083-2

Stiffness & Flexibility

Stiffness / Rigid Axle

Axis Shape

Straight Shaft

Shaft Shape

Real Axis

Appearance Shape

Round

Load

Hydraulic Cylinder

Transport Package

Container

Specification

20GP, 40HQ

Trademark

HYDSTEELS

Origin

Wuxi, China

HS Code

8483109000

Production Capacity

20000tons/Year

Key features

Custom Material Grades: Available in CK45, 20mnv6, 42CrMo4, and other specific steel grades.

High Hardness Chrome Layer: Chrome layer hardness reaches minimum 800HV for superior durability.

Flexible Length Options: Available in 1m to 9m lengths, including 4m, 5.8m, 6m, and 7.5m.

Customizable Heat Treatment: Options include None, Induction Hardened, or Quenched & Tempered (Q+T).

ISO F7 Tolerance Standard: Dimensional accuracy meets ISO F7 tolerance for high precision.

Professional Customization: Custom production based on specific mechanical and appearance requirements.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceExperienced Team

Qingzhou Dooharvest International Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2021-01-01Nearest Port: Shanghai, Qingdao, TianjinAverage Response Time: ≤6.31hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DDP, DAP, FCA, EXW

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical manufacturer specializing in honed tubes, chrome-plated rods, and related hydraulic components. It reports more than 15 years of industry experience, customers in 40 countries, export sales representing 90% of total sales, and annual capacity of 15,000 tons of honed tubes and 5,000 tons of hard chrome-plated piston rods. The supplier offers broad customization, 3D software design, ODM, and OEM services, and holds ISO 9001 certification. However, the evidence also shows no in-stock, overseas warehouse, showroom, agent, or branch capability; no participation in offline trade shows; no new products reported in the past year; no available SDK; and no ERP-based operational integration. Service procedures exist for supplier assessment, corrective actions, and complaints, but written records are absent. Financial credibility cannot be confirmed because the slices only identify financial-information years, not financial results or performance.

Supplier typeThe supplier is explicitly identified as a professional technical supplier and presents itself as a manufacturer focused on honed tubes, chrome rods, piston rods, and related hydraulic products. Its reported 15+ years of specialization and production facilities covering all processing support classification as a specialized industrial manufacturer.

CertificationsThe supplier reports certification of its management system under ISO 9001. This is explicit evidence of holding a recognized quality-management certification, although no additional certifications are provided.

Production capacityThe supplier reports annual capacity of 15,000 tons for honed tubes and 5,000 tons for hard chrome-plated piston rods, facilities covering all processing, rich stock, and 100% inspection during processing. These explicit capacity and quality-control claims support substantial production capability, although the separate statement of no in-stock service capacity limits conclusions about ready-stock fulfillment.

Customization capabilityThe supplier explicitly provides customization from samples, designs, full customization, minor customization, and flexible customization. It also offers 3D software design and ODM services, demonstrating broad product and design customization coverage.

Client casesThe supplier states that its products and services have gained recognition from clients in 40 countries and that it provides OEM services for popular brands. These claims indicate international customer exposure and brand-related experience, but no named customers, project details, or independently documented cases are supplied.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a manufacturer.

Q:How long is your delivery time?

Generally 5-10 days if goods are in stock. If not in stock, it takes 30-40 days depending on quantity; larger quantities may have shorter delivery times.

Q:Do you provide samples? Is it free or extra?

Yes, we can provide free samples from inventory, but the freight cost must be borne by the buyer.

Q:What are your terms of payment?

We accept T/T or L/C according to the real order. For orders <=1000 USD, 100% payment in advance. For orders >=1000 USD, 30% T/T in advance with the balance paid before shipment.

Q:What materials are available for the piston bars?

Available materials include CK45, ST52, 20MnV6, 42CrMo4, 40Cr, bearing steel, and stainless steel.