What are your packaging standards?

We use seaworthy export-standard packaging like reinforced crates or pallets. Customized packaging solutions are available for specific logistical or branding needs.

Can you provide samples before a bulk order?

Yes, we offer free samples for technical evaluation to ensure they meet your project's standards before proceeding with mass production.

Do you have FM/UL certificates?

Yes, we have FM/UL certification. We can also obtain Indonesian SNI, Brazilian ABNT, and almost all mainstream certifications.

Our standard MOQ is around 5 tons per order.

How is the price determined?

Price depends on size, standard (BS/DIN/ANSI), surface (black or galvanized), and quantity. Please share details for an accurate quotation.

Jianzhi Black 4in Cast Iron Threaded Cap Pipe Fitting for Plumbing

Name: Jianzhi Black 4in Cast Iron Threaded Cap Pipe Fitting for Plumbing
Brand: Hebei Jianzhi Casting Group Porcelain Insulator Caps Co., Ltd.
SKU: 2157187282

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.

Cap

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

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

FM/UL Certified: Certified with FM, UL, CE, and ISO9001 standards.

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

Custom OEM/ODM: Supports OEM and ODM customization for specific needs.

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

Leak-Proof Design: Precision threading ensures permanent leak-proof connections.

Versatile Application: Ideal for fire protection, water systems, and HVAC.

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: ≤5.91h 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 trading company?

We are a professional manufacturer with dedicated production workshops and advanced machinery, ensuring rigorous quality control and full transparency.

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

We maintain strategic inventory of standard fittings for immediate dispatch. For specialized requirements, we provide customized manufacturing based on technical drawings.

Q:How do you guarantee product quality?

Our facilities are ISO 9001:2015 certified. Products undergo strict testing to comply with international standards like IEC, ANSI, or BS, ensuring reliability.

Q:What is the standard lead time for orders?

The typical lead time is 2 to 4 weeks, depending on order volume and customization requirements. Please contact our sales team for a precise schedule.

Q:What are the accepted payment terms?

We accept T/T (Telegraphic Transfer), L/C (Letter of Credit) at sight, and Western Union to facilitate smooth international transactions.