Can I request custom roller sizes?

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

Custom Forging Manufacturer A105 Carbon Steel Lap Joint Flanges for Mining Process Water Lines

Name: Custom Forging Manufacturer A105 Carbon Steel Lap Joint Flanges for Mining Process Water Lines
Brand: Jinan Hongtu Forging Co., Ltd
SKU: 2195316132

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

Lj Flange

Model NO.

Flange

Material

Carbon Steel/Ss/Alloy Steel/Customized

Structure

Flanges

Connection

Lap Joint

Sealing Surface

Ljr/RF/FF/Rtj

Manufacturing Way

Forging

Size Range

½" Nb to 24" Nb (DN15 to DN600)

Pressure Rating

Class150-1500/Pn6 to Pn100

Outer Diameter

50mm-1000mm/Customized

Inner Diameter

20mm-800mm/Customized

Flange Thickness

10mm-80mm/Customized

Number of Bolt Holes

4, 8, 12, 16, 20 /Customized

Stub End Outside Diameter

20mm-700mm/Customized

Stub End Lap Diameter

30mm-800mm/Customized

Stub End Length

50mm-500mm/Customized

Stub End Wall Thickness

2mm-20mm/Customized

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

500000 Pieces/Year

Key features

Equipped with advanced multi-axis CNC lathes and machining centers to achieve micron-level precision for sealing faces and inner diameters.

The lap joint flange can rotate freely around the stub end, greatly simplifying bolt hole alignment.

Pipes are welded directly to the stub end without welding the flange ring, preventing hole misalignment caused by welding deformation.

Composed of a stub end and a backing flange ring, providing a clear and functional structural split.

Corrosive fluids inside the pipe only contact the stub end interior, keeping the outer flange ring fully isolated from the fluid.

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

We offer a complete one-stop solution covering raw material sourcing, forging, CNC machining, surface treatment, testing, and packaging.

Fully customizable flanges according to customer drawings or samples, catering to non-standard sizes and custom pressure ratings.

Carbon steel backing rings can be hot-dip galvanized, painted, electro-galvanized, or epoxy-coated for anti-corrosion.

Loosening the bolts allows the flange ring to rotate and slip back, simplifying pipe pigging and endoscopic inspections.

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: ≤0.32h

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.