Can I request custom roller sizes?

Absolutely! We can customize them based on the drawings and specifications you provide.

Precision Forged 20# Carbon Steel Blind Flanges (RF/FF Facing) for Fluid Control Systems

Name: Precision Forged 20# Carbon Steel Blind Flanges (RF/FF Facing) for Fluid Control Systems
Brand: Jinan Hongtu Forging Co., Ltd
SKU: 2178456562

Shandong, ChinaJinan Hongtu Forging Co., Ltd

US$60.00

100-499 Pieces

US$50.00

500-999 Pieces

US$30.00

1,000+ Pieces

Sample price:US$100000.00/piece.Request sample

Product profile

Customization

Available

Standard

ANSI, DIN, GB, JIS

Type

Blind Flange

Model NO.

Supports customization

Material

Carbon Steel/Customized

Structure

Flanges

Connection

Bolted/Flanged

Sealing Surface

RF/FF

Manufacturing Way

Forging

Pressure Rating

Class150/Customized

Nominal Diameter

DN15 - DN2000

Total Flange Thickness(C)

20mm-200mm/Customized

Outer Diameter

100mm-2000mm/Customized

Number of Bolt Holes

4,8,12,16/Customized

Raised Face Height

1.6 mm (Class 150/300) / 6.4 mm (Class 600+)

Bolt Hole Diameter

5/8" - 2-5/8"

Hardness

Customized

Manufacturing Process

Forging/Customized

Certificate

ISO9001-2008

Digital Quality Traceability

Provided

Video Outgoing-Inspection

Provided

Machinery Test Report

Provided

OEM & ODM Custom

Sample

Transport Package

International Shipping Package

Specification

Standard specifications or customized

Trademark

OEM

Origin

Jinanchina

Production Capacity

500000pieces/Year

Key features

Precision-forged using high-tonnage hydraulic presses to ensure dense internal metal structures without voids or defects.

Premium-grade 20#, 45#, 40Cr, and 42CrMo steels are selected to provide superior mechanical strength and wear resistance.

Machined on advanced multi-axis CNC lathes to achieve strict dimensional tolerances and perfect surface alignment.

Precise sealing face serration processing guarantees excellent gasket locking and zero-leakage performance.

100% non-destructive ultrasonic testing is performed to detect internal micro-flaws before shipment.

Flexible manufacturing equipment allows complete customization of sizes, pressure classes, and special facing profiles.

Available in Raised Face (RF), Ring Type Joint (RTJ), and Flat Face (FF) geometries for versatile applications.

Products are protected with rust-proof oil and custom wooden-case packaging for safe sea freight.

Our expert technical team provides a one-stop ODM solution, ranging from engineering drawing optimization to sample performance testing.

Company profile

High Repeat Buyers ChoiceFast DeliveryRaw-Materials TraceabilityStandardized quality control

Jinan Hongtu Forging Co., Ltd

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: 3 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤0.35h

AI-Powered supplier vetting

SummaryThe supplier operates in metalworking and machinery-related manufacturing, including forging, machining, gear and transmission components, hardware products, and mechanical parts. It reports ISO9001:2015, ISO14001, and ISO45001:2018 certifications, raw-material traceability, 100% finished-product inspection, and four quality inspectors. The supplier offers broad customization and ODM services, has three R&D engineers, and launched new products during the past year. However, service-management procedures lack supporting records, and the supplier has no overseas warehouse, showroom, agents or branches, or offline trade-show participation. Financial information is only represented by years rather than substantive financial indicators, so financial credibility cannot be determined from the provided evidence. It reports OEM service for known brands but no Fortune 500 cooperation.

Supplier typeThe supplier is a manufacturing-oriented metalworking and machinery-parts provider, covering forging, machining, mechanical parts, hardware products, gears, reducers, and transmissions. Its description specifically presents end-to-end capability from forging raw materials to precision-finished parts, indicating an integrated industrial component supplier rather than a purely trading-focused business.

CertificationsThe supplier reports ISO9001:2015 quality management certification, ISO14001 environmental management certification, and ISO45001:2018 occupational health and safety certification. These are explicit certifications covering quality, environmental, and occupational safety management.

R&D capabilityThe supplier reports three R&D engineers, new products launched during the past year, ODM services, and multiple customization modes. However, it has no available SDK, which limits evidence of software-development or SDK-related innovation; overall product and design innovation capability is explicitly supported.

Production capacityProduction evidence includes lathes, machining centers, vertical lathes, and forging machines, with business coverage in forging, machining, gears, reducers, transmissions, hardware, and mechanical parts. The supplier also reports raw-material traceability and 100% finished-product inspection supported by four quality inspectors, indicating established manufacturing and quality-control capacity.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM service availability, providing direct evidence of broad product-development and customization support.

Product Q&A

Q:May I get a cheaper price?

A workable discount will be given if there's a large quantity.

Q:Is OEM acceptable?

Yes, please contact us for design details. We will offer you a reasonable price and make samples for you.

Q:What's your quality guarantee?

We have our professional quality control workers with inspection machines. Or if you have a Chinese agency, you also can ask them to do an inspection in our factory before shipment.

Q:Can I visit your factory before ordering?

Yes, you're warmly welcome to visit our factory.

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

Yes, we can offer samples free but shipping charges are covered by customer.