Can you provide samples before a bulk order?

Yes, we offer free samples for your technical evaluation. We believe in the quality of our metal components and are happy to provide samples to ensure they meet your project's standards before proceeding with mass production.

Do you have FM UL certificate?

Yes ,Not only do we have FM UL certification, but we can also obtain Indonesian SNI certification, Brazilian ABNT certification, and almost all mainstream certifications.

Our standard MOQ is around 5 tons per order.

Hi, thank you for your inquiry. Our price depends on several factors such as size, standard (BS/DIN/ANSI), surface (black or galvanized), and quantity. Could you please share more details about your requirements? Then I can offer you an accurate and competitive quotation.

Jianzhi Black Malleable Iron Threaded Hexagon Reduced Nipple Plumbing Pipe Fitting

Name: Jianzhi Black Malleable Iron Threaded Hexagon Reduced Nipple Plumbing Pipe Fitting
Brand: Hebei Jianzhi Casting Group Porcelain Insulator Caps Co., Ltd.
SKU: 2154158002

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

US$0.10-1.00

500 Pieces

Product specifications

Main Items

Thread

Size Range

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

After-sales Service

1 Year

Connection

Flat or Taper

Model NO.

Black Reduced Hexagon Nipple

Head Code

Round

Thread Distribution

Internal Thread

Surface

Black

Material

Malleable Cast Iron

Technics

Casting

Application

Fire Protection System, Water System, HVAC

Customized

Warranty

10 Year

Pipe Class

150

Pressure

Low Pressure

Surface Treatment

Black

Technic

Casting

Shape

Round

Mounting Hole Diameter

1/8 - 6 Inch

Customized Support

OEM, ODM

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

730719

Production Capacity

400000ton/Year

Key features

FM/UL Certified Quality: Certified with FM, UL, CE, and ISO9001 for reliable performance in critical systems.

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

Customization Support: OEM and ODM support available with customized shapes, sizes, and surface treatments.

Leak-Proof Precision: Precision threading compliant with NPT and BSPT standards ensures tight connections.

Versatile Applications: Ideal for fire protection, water systems, HVAC, and oil & gas pipelines.

Corrosion Resistance: Hot-dip galvanized or black finishes provide superior protection against corrosion.

Global Standards: Complies with ANSI, JIS, DIN, ASME, and ISO international standards.

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.

Product Q&A

Q:Are you a manufacturer or a trading company?

Yes, we are a professional manufacturer. We operate our own dedicated production workshops and advanced machinery. By managing the entire manufacturing process in-house, we ensure rigorous quality control and full transparency at every stage of production.

Q:Do you maintain stock, or is everything made to order?

We maintain a strategic inventory of standard power line hardware and fittings for immediate dispatch. For specialized requirements or high-volume orders, we provide customized manufacturing tailored to your specific technical drawings and material specifications (such as QT450-10 or specific galvanizing standards).

Q:How do you guarantee the quality of your products?

Quality is our core priority. All our production facilities are ISO 9001:2015 certified. Our products undergo strict testing to comply with demanding national and international standards (such as IEC, ANSI, or BS). We currently serve major global market players, ensuring reliability in critical power infrastructure.

Q:What are your accepted payment terms?

To facilitate smooth international transactions, we accept: T/T (Telegraphic Transfer) L/C (Letter of Credit) at sight Western Union Cash

Q:What are your packaging standards?

We utilize seaworthy export-standard packaging (such as reinforced crates or pallets) to ensure your goods arrive in perfect condition. We can also provide customized packaging solutions based on your specific logistical or branding requirements.