What is the lead time for production?

The delivery date is 7-30 days. Peak season lead time is one month, and off-season lead time is within 15 workdays.

What materials are available for the flanges?

Materials include Carbon Steel (A105, Q235), Stainless Steel (304, 316, etc.), Duplex Stainless Steel, Nickel Alloy, and High Pressure Steel.

What standards do your flanges comply with?

We comply with ANSI, DIN, GB, JIS, GOST, BSW, ISO, and other international standards.

Environmental Protection OEM ODM Custom Forging / Casting Sch4OS Spectacle Blind Flange

Name: Environmental Protection OEM ODM Custom Forging / Casting Sch4OS Spectacle Blind Flange
Brand: Jinan Hongtu Forging Co., Ltd
SKU: 2088034032

Shandong, ChinaJinan Hongtu Forging Co., Ltd

US$5.00

500-4,999 Pieces

US$4.00

5,000-49,999 Pieces

US$3.00

50,000+ Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Standard

ANSI, DIN, GB, JIS, GOST, BSW

Type

Welding Flange

Model NO.

Custom Flange

Material

Carbon Steel

Structure

Round

Connection

Welding

Sealing Surface

Manufacturing Way

Forging

Product Name

Flange

Keywords

Threaded Flange

Model

Hongtu-FL Series

Transport Bag

Plywood Boxes/Pallets

Manufacturing Method

Forging

Special Flange

Acceptable According to Drawings

Science and Technology

Forging, Casting, Cutting, Rolling

American Standard

ANSI B16.5, ASME B16.47, Mss Sp-44, Awwa C207

European Standards

En1092-1

British Standards

BS4504, BS10

Japanese Standard

JIS B2220

Korean Standard

Ks B1503

Australian Standards

As2129, as/Nz4087, As4331

New Zealand Standards

as/Nz 4087

ISO Standards

ISO 7005-1 Certification

Transport Package

Standard Packaging or Customized

Specification

Standard specifications or customized

Trademark

HONGTU

Origin

Jinanchina

Production Capacity

500000pieces/Year

Key features

OEM/ODM Customization: Accepts custom designs and samples with flexible customization options.

Wide Material Selection: Available in Carbon Steel, Stainless Steel, Duplex, Nickel Alloy, and more.

Multiple Standard Compliance: Meets ANSI, DIN, GB, JIS, GOST, ISO, and other international standards.

High Production Capacity: Capable of producing 10,000 tons per month with fast delivery.

100% Quality Inspection: Professional QC team ensures 100% visual inspection of finished products.

Versatile Application: Suitable for petrochemical, marine, HVAC, and construction industries.

Flexible Packaging: Offers plywood boxes, pallets, or custom packaging as per demand.

Competitive Pricing: Workable discounts available for large quantity orders.

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: ≤0.65h

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:Is OEM service acceptable?

Yes, OEM is acceptable. Please contact us for design details, and we will offer a reasonable price and make samples for you ASAP.

Q:What is the quality guarantee?

We have professional quality control workers with inspection machines. You can also ask your Chinese agency to inspect in our factory before shipment.

Q:Do you provide free samples?

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

Q:Can I visit your factory before ordering?

Yes, you are warmly welcome to visit our factory.

Q:Is there a discount for large quantities?

Yes, a workable discount will be given if there is a large quantity.