What are your packaging standards?

We use seaworthy export-standard packaging like reinforced crates or pallets, with customized options available.

Can you provide samples before a bulk order?

Yes, we offer free samples for technical evaluation to ensure they meet your project's standards.

Do you have FM and UL certificates?

Yes, we have FM and UL certification, and can also obtain Indonesian SNI, Brazilian ABNT, and other mainstream certifications.

Our standard MOQ is around 5 tons per order.

How is the price determined?

Price depends on size, standard, surface treatment, and quantity. Please share your requirements for an accurate quotation.

Jianzhi Black Malleable Iron Metal NPT BSPT 321 Threaded Flange

Name: Jianzhi Black Malleable Iron Metal NPT BSPT 321 Threaded Flange
Brand: Hebei Jianzhi Casting Group Porcelain Insulator Caps Co., Ltd.
SKU: 2156999322

Hebei, ChinaHebei Jianzhi Casting Group Porcelain Insulator Caps Co., Ltd.

US$0.30

4 Boxes

US$0.20

5-9 Boxes

US$0.10

10+ Boxes

Product specifications

Main Items

Thread

Size Range

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

10 Year

Model NO.

321

Connection

Female and Male

Shape

Round

Material

Malleable Cast Iron

Pipe Class

150

Pressure

Low Pressure

Surface Treatment

Galvanized or Black

Technic

Casting

Mounting Hole Diameter

1/8 - 6 Inch

Customized Support

OEM, ODM

Application

Fire Protection System, Water System, HVAC

Thread Type

NPT, BSPT

Working Pressure

1.6MPa

Product Material

Black Heart Malleable Iron (Kth330-08 / ASTM A197)

Testing

100% Air Pressure Tested

Properties

Tensile Strength≥330 MPa; Elongation≥8%

Standard

FM/UL,En 10242,ISO 49, BS 143 & 1256

Transport Package

480×320×190cm

Specification

480×320×190cm

Trademark

JIANZHI

Origin

Hebei, China

HS Code

7307190000

Production Capacity

400000ton/Year

Key features

10-Year Warranty: Comprehensive 10-year warranty coverage for peace of mind.

FM & UL Certified: Certified with FM, UL, CE, ISO 9001, and other global standards.

Premium Material: Made from high-tensile black heart malleable iron (ASTM A197).

Corrosion Resistance: Hot-dip galvanized or black finish for superior durability.

OEM/ODM Support: Full customization support for designs and specifications.

Precision Threading: Strict compliance with NPT and BSPT standards for leak-proof connections.

Wide Size Range: Available in sizes from 1/8 inch to 6 inch for diverse applications.

100% Quality Tested: Every product undergoes 100% air pressure testing before delivery.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceIn-stock Capacity

Hebei Jianzhi Casting Group Porcelain Insulator Caps Co., Ltd.

Hebei, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Designs, Full Customization, etc. CertifiedExport Year: 10 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤6.46h CertifiedTerms of Payment: T/T, LC, D/P

AI-Powered supplier vetting

SummaryThe supplier demonstrates substantial manufacturing scale for pipe fittings and pipe caps, with stated inventory capacity, one-month lead times in both peak and off-season periods, and broad customization options. Its products and management systems hold multiple certifications, including UL, CE, ABNT, TSE, FM, SNI, SGS, BSI, UKCA, and quality, environmental, occupational safety, after-sales service, and energy-management certifications. However, the supplier is not identified as a professional technical supplier, provides no 3D software, ODM, SDK, or recent new-product development, and lacks raw-material traceability. Overseas service infrastructure is limited: no overseas agents, branches, warehouses, showrooms, or overseas service countries are reported. Corrective-action and complaint-handling procedures are undocumented, while financial capacity is only represented by year labels and cannot be substantively assessed.

CertificationsThe supplier reports product certifications including UL, CE, ABNT, TSE, FM, SNI, SGS, BSI, and UKCA. It also reports certifications covering quality, environment, occupational health and safety, after-sales service, and energy management, providing explicit evidence of broad certification coverage.

After-Sales capabilityThe supplier reports no overseas agents or branches, warehouses, showrooms, or overseas service countries, although it has inventory capacity and accepts several service quotation and payment terms. Complaint handling and corrective/preventive action have no written procedures or records, which limits evidence of a formal after-sales management system.

R&D capabilityThe supplier reports no new products in the past year, no ODM service, no SDK, and no 3D software design service. Although it offers design-based and flexible customization, the stated evidence indicates limited documented product-development and technical innovation capability.

Production capacityThe supplier reports annual productivity of 321,500 tons of pipe fittings and 168,000 tons of pipe caps, inventory capacity, and one-month lead times in both peak and off-season periods. However, there is no valid manufacturing-capacity contract with affiliated subcontractors, so capacity governance has a stated weakness despite the reported scale.

Customization capabilityThe supplier explicitly offers customization from designs, full customization, minor customization, and flexible customization. These options are reported consistently across the supplied capability records, providing direct evidence of broad customization service availability.