Can I request custom roller sizes?

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

Precision Alloy Steel Slip-on Flanges (Blanks) Class 150 for HVAC Ventilation Network Connections

Name: Precision Alloy Steel Slip-on Flanges (Blanks) Class 150 for HVAC Ventilation Network Connections
Brand: Jinan Hongtu Forging Co., Ltd
SKU: 2183453222

Shandong, ChinaJinan Hongtu Forging Co., Ltd

US$100.00

100-499 Pieces

US$60.00

500-999 Pieces

US$50.00

1,000+ Pieces

Sample price:US$100000.00/piece.Request sample

Product profile

Customization

Available

Standard

ANSI, DIN, GB, JIS

Type

So Flange

Model NO.

Forged Ring

Material

Carbon Steel/Ss/Alloy Steel/Customized

Structure

Flanges

Connection

Welding/Customized

Sealing Surface

RF/FF/Customized

Manufacturing Way

Forging

Nominal Diameter (DN)

1/2"-48" (DN15-DN1200)

Pressure Rating

Class150-2500/Customized

Outer Diameter

100 mm-2000 mm/Customized

Inner Diameter

50mm-1500mm/Customized

Flange Thickness

20mm-200mm/Customized

Forging Ratio

≥ 3:1/Based on Products

Number of Bolt Holes

4, 8, 12, 16, 20, 24 /Customized

Bolt Hole Diameter

10-20 mm/Customized

Wall Thickness

Sch 10, Sch 40, Sch 80, Sch 160, Std, Xs

Certification Compliance

ISO 9001:2015

Non-Destructive Testing

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

High Structural Durability: Made from high-grade carbon steel, stainless steel, and alloy steel for long service life.

Versatile Pressure Ratings: Supports multiple pressure classes including Class 150, Class 300, PN10, and PN16.

Precision Engineering: Manufactured with tight tolerances to ensure accurate alignment during pipe installation.

Non-Destructive Testing Pass: Tested for cracks and material defects using ultrasonic and magnetic particle testing.

High-density forging process eliminates internal voids and air pockets.

Burr-Free Machined Edges: Smoothly finished edges prevent hand injury and pipe damage during assembly.

Rust-Inhibitive Protection: Standard black rust-proof oil or clear vanish coating extends shelf life.

Tailored Flange Dimensions to Exact Specifications: Custom manufacturing according to non-standard outer diameters, wall thicknesses, and bolt hole configurations.

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: ≤0.54h

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.